CN115459846B - Space laser communication system with multi-standard transmission - Google Patents
Space laser communication system with multi-standard transmission Download PDFInfo
- Publication number
- CN115459846B CN115459846B CN202211080576.4A CN202211080576A CN115459846B CN 115459846 B CN115459846 B CN 115459846B CN 202211080576 A CN202211080576 A CN 202211080576A CN 115459846 B CN115459846 B CN 115459846B
- Authority
- CN
- China
- Prior art keywords
- beam splitter
- communication system
- laser communication
- polarization beam
- wavelength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004891 communication Methods 0.000 title claims abstract description 73
- 230000005540 biological transmission Effects 0.000 title claims abstract description 48
- 230000003287 optical effect Effects 0.000 claims abstract description 51
- 230000010287 polarization Effects 0.000 claims abstract description 41
- 238000001514 detection method Methods 0.000 claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 230000001427 coherent effect Effects 0.000 claims abstract description 18
- 230000008054 signal transmission Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000000969 carrier Substances 0.000 description 6
- 239000013307 optical fiber Substances 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/118—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum specially adapted for satellite communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/5161—Combination of different modulation schemes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Communication System (AREA)
Abstract
本发明涉及一种多制式传输的空间激光通信系统，包括激光发射机、偏振分光片、粗指向机构、波长分光片、能量分光片；光信号由所述激光发射机发射后经所述偏振分光片反射至所述粗指向机构偏转指向发射；光信号由所述粗指向机构接收后经所述偏振分光片透射至所述波长分光片，一部分经所述波长分光片透射至相干探测模块，另一部分经所述波长分光片反射至所述能量分光片，并一部分经所述能量分光片透射至非相干探测捕跟模块，另一部分经所述能量分光片反射至非相干探测通信模块。本发明支持多制式多协议的激光星间链路同时传输，支持相干和非相干两种体制激光信息传输，可解决不同卫星系统及不同体制下的跨星座建链，实现异构星座的互联互通。
The present invention relates to a space laser communication system for multi-standard transmission, including a laser transmitter, a polarization beam splitter, a coarse pointing mechanism, a wavelength beam splitter, and an energy beam splitter; after the optical signal is emitted by the laser transmitter, it is reflected by the polarization beam splitter to the coarse pointing mechanism for deflection and transmission; after the optical signal is received by the coarse pointing mechanism, it is transmitted to the wavelength beam splitter through the polarization beam splitter, a part of it is transmitted to the coherent detection module through the wavelength beam splitter, another part is reflected to the energy beam splitter through the wavelength beam splitter, and a part is transmitted to the incoherent detection tracking module through the energy beam splitter, and another part is reflected to the incoherent detection communication module through the energy beam splitter. The present invention supports simultaneous transmission of multi-standard and multi-protocol laser intersatellite links, supports coherent and incoherent laser information transmission, can solve the problem of cross-constellation link establishment under different satellite systems and different systems, and realizes the interconnection and interoperability of heterogeneous constellations.
Description
Technical Field
The invention relates to the field of communication, in particular to a multi-system transmission space laser communication system.
Background
At present, high-low orbit communication constellations, remote sensing constellations and the like are gradually deployed and built, and most of the constellations are planned to deploy laser inter-satellite link networking, but because of the self-construction requirements of each satellite system, the communication systems and the rate requirements of different systems (different modulation modes and detection modes) exist, so that different communication systems and transmission protocols among the constellations cannot be communicated with each other through the Internet.
Along with the development of on-orbit carrying verification of a laser communication terminal, the current system of the satellite-borne laser communication terminal mainly comprises two types of OOK modulation/incoherent detection and BPSK modulation/coherent detection, and the BPSK modulation mode can be upgraded into QPSK to meet the requirement of users on higher information transmission rate. In addition, the demand of miniaturization of the satellite laser communication load is that the same-band beaconing light catch system is mainly selected from the space laser communication light carrier frequency point and the catch system. However, there are still some problems in the prior art:
Chinese patent CN106533562a discloses a space multiuser multi-mode satellite laser communication system and method, comprising a multi-carrier generating subsystem, a multi-mode modulation matching subsystem and an optical phased array antenna subsystem which are connected in sequence, wherein the multi-carrier generating subsystem comprises a condenser, a pumping cavity and a polarization beam splitter, the pumping cavity is positioned between the condenser and the polarization beam splitter, the multi-mode modulation matching subsystem comprises a modulator array and a wavelength division multiplexer, the optical phased array antenna subsystem comprises a fine-aiming deflection control mirror and a coarse-aiming deflection control mirror, and the coarse-aiming deflection control mirror is positioned on the side surface of the fine-aiming deflection control mirror. The method has the problems that the laser communication terminal is generally a full duplex communication system, the disclosure only describes the transmitting mode of the multi-mode laser communication system, the multi-mode simultaneous receiving method is not described, and the optical phased array antenna subsystem used by the method cannot meet the space application requirement in a short period.
Chinese patent CN109039462B discloses a system and method for receiving a multi-modulation format compatible high-speed laser signal without phase lock, which can greatly improve the compatibility of communication systems at relay nodes of the existing laser communication network, and save the price and resource cost of system performance upgrade. The optical time delay interferometer I comprises a control instruction unit, a low-noise high-gain optical amplifier, an optical switch, a filter and an optical time delay interferometer I, wherein the optical interferometer Q is connected with a first balance detector and a second balance detector, and the first balance detector and the second balance detector sequentially output electric signals through an anti-coding switch unit, a parallel-serial conversion unit and a data processing unit. The problem is that only the multi-modulation format compatible receiving system and method are described, and the design method and principle of the multi-system compatible optical system in the laser communication terminal are not described.
In summary, the laser transmitter in the present stage cannot realize simultaneous modulation of multi-system optical carriers, but can only be suitable for OOK, BPSK and QPSK modulation format switching of a single optical carrier, and cannot meet the requirement of simultaneous modulation transmission of multi-system. Under the same-band beaconing-free light capturing system, no design and realization method of a receiving and transmitting optical channel of a laser communication system exist, and the simultaneous receiving and transmitting requirements of multi-system light carriers are met.
Disclosure of Invention
The embodiment of the invention aims to provide a multi-system transmission space laser communication system, which solves the problem that laser signals of different systems cannot be transmitted simultaneously.
The embodiment of the invention provides a multi-system transmission space laser communication system which comprises a laser transmitter, a polarization beam splitter, a coarse directing mechanism, a wavelength beam splitter and an energy beam splitter, wherein an optical signal is reflected to the coarse directing mechanism by the polarization beam splitter to deflect and direct to transmit after being transmitted by the laser transmitter, an optical signal is received by the coarse directing mechanism and transmitted to the wavelength beam splitter by the polarization beam splitter, one part of the optical signal is transmitted to a coherent detection module by the wavelength beam splitter, the other part of the optical signal is reflected to the energy beam splitter by the wavelength beam splitter, one part of the optical signal is transmitted to an incoherent detection heel capturing module by the energy beam splitter, and the other part of the optical signal is reflected to an incoherent detection communication module by the energy beam splitter.
In any embodiment, the laser transmitter comprises an IQ modulator and an intensity modulator connected in parallel.
In either embodiment, the laser transmitter may simultaneously modulate and switch OOK, BPSK/QPSK signals.
In any embodiment, the spatial laser communication system further comprises an optical amplifier and a signal emitting module located between the laser transmitter and the polarizing beamsplitter, wherein the signal emitting module comprises a collimator.
In any embodiment, the spatial laser communication system further comprises a first fast mirror positioned between the signal emitting module and the polarizing beamsplitter.
In any embodiment, the spatial laser communication system further comprises a telescope disposed between the polarizing beamsplitter and the coarse pointing mechanism.
In any embodiment, a 1/4 wave plate is arranged between the telescope and the polarization beam splitter.
In any embodiment, a second quick reflection mirror is arranged between the telescope and the polarization beam splitter.
In any embodiment, a band-pass filter is arranged between the polarization beam splitter and the wavelength beam splitter.
In any embodiment, the coherent detection module comprises a PD detector, the incoherent detection communication module comprises an APD communication detector, and the incoherent detection heel module comprises a four-quadrant detector.
The invention supports the simultaneous transmission of laser inter-satellite links of multi-system and multi-protocol, supports the transmission of laser information of coherent and incoherent systems, can solve the problem of cross-constellation link establishment under different satellite systems and different systems, and realizes the interconnection and intercommunication of heterogeneous constellations.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the structure and function of signal emission of a spatial laser communication system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the structure and function of signal reception of the spatial laser communication system according to the embodiment of the invention;
fig. 3 is a schematic diagram of signal transceiving transmission of a spatial laser communication system at one end according to an embodiment of the present invention;
fig. 4 is a schematic diagram of signal transceiving transmission of the spatial laser communication system at the other end according to an embodiment of the present invention;
Fig. 5 is a schematic structural and functional diagram of a laser transmitter according to an embodiment of the invention.
Detailed Description
The description of the embodiments of this specification should be taken in conjunction with the accompanying drawings, which are a complete description of the embodiments. In the drawings, the shape or thickness of the embodiments may be enlarged and indicated simply or conveniently. Furthermore, portions of the structures in the drawings will be described in terms of separate descriptions, and it should be noted that elements not shown or described in the drawings are in a form known to those of ordinary skill in the art.
Any references to directions and orientations in the description of the embodiments herein are for convenience only and should not be construed as limiting the scope of the invention in any way. The following description of the preferred embodiments will refer to combinations of features, which may be present alone or in combination, and the invention is not particularly limited to the preferred embodiments. The scope of the invention is defined by the claims.
Fig. 1 and fig. 2 are schematic structural and functional diagrams of a multi-system transmission spatial laser communication system according to an embodiment of the present invention. The system comprises a laser transmitter, a polarization beam splitter, a coarse pointing mechanism, a wavelength beam splitter and an energy beam splitter. And the optical signals are reflected to the coarse pointing mechanism to deflect and point to emit through the polarization beam splitter after being emitted by the laser emitter. The light signal is received by the coarse directing mechanism and then transmitted to the wavelength light splitting sheet through the polarization light splitting sheet, one part of the light signal is transmitted to the coherent detection module through the wavelength light splitting sheet, the other part of the light signal is reflected to the energy light splitting sheet through the wavelength light splitting sheet, one part of the light signal is transmitted to the incoherent detection heel capturing module through the energy light splitting sheet, and the other part of the light signal is reflected to the incoherent detection communication module through the energy light splitting sheet.
As shown in fig. 3 and fig. 4, the present embodiment can support multi-system laser inter-satellite link bidirectional transmission operation based on the same-band beaconing-free light system, and if two terminals of laser communication are an a terminal and a B terminal, respectively, fig. 3 is a signal transmission schematic diagram of the a terminal, and fig. 4 is a signal transmission schematic diagram of the B terminal. At the end a, the signal light that the laser transmitter can modulate and transmit includes OOK modulated light λ1 and BPSK/QPSK modulated light λ2, and the signal light that the coarse pointing mechanism can receive includes OOK modulated light λ3 and BPSK/QPSK modulated light λ4. At the B end, the signal light that can be modulated and transmitted by the laser transmitter includes OOK modulated light λ3 and BPSK/QPSK modulated light λ4, and the signal light that can be received by the coarse pointing mechanism includes OOK modulated light λ1 and BPSK/QPSK modulated light λ2.
As shown in fig. 5, in the present embodiment, an IQ modulator, i.e., an amplitude modulator, and an intensity modulator are connected in parallel within the laser transmitter. Compared with the independent IQ modulator or the intensity modulator, the IQ modulator and the intensity modulator are connected in parallel in the laser transmitter, so that the simultaneous modulation of the amplitude and the phase of different frequency optical carriers in the laser transmitter is realized, and particularly, the OOK and BPSK/QPSK modulation transmission are respectively and simultaneously carried out by using the optical carriers with the wavelength interval of 15-25 nm, so that the multi-system simultaneous transmission capability of the laser terminal is effectively improved. The wavelength of the signal light emitted by the laser transmitter can be selected in a frequency point of 1550nm wave band specified by ITU, and the wavelength intervals of lambda 1, lambda 2, lambda 3 and lambda 4 are within 15-25 nm, so that the wavelength splitting and the sharing of the optical amplifier are facilitated.
As shown in fig. 1, in this embodiment, an optical amplifier and a signal emitting module are further disposed between the laser transmitter and the polarization beam splitter, where the optical amplifier is used for optical amplification, and the signal emitting module includes a collimator (not labeled in the figure) for shaping light. The first fast reflector is arranged between the signal transmitting module and the polarization beam splitter and is used for reflecting the shaped optical signal to the polarization beam splitter.
As shown in fig. 1 and 2, in this embodiment, a telescope and a 1/4 wave plate are further provided between the polarization beam splitter and the coarse pointing mechanism. The telescope is positioned at one side close to the coarse pointing mechanism and is used for collimation, beam expansion or beam contraction of the optical signals. The 1/4 wave plate is positioned at one side close to the polarization beam splitter and is used for converting optical signals. The telescope and the polarization beam splitter are also provided with a second fast reflector, and further, the second fast reflector can be positioned between the 1/4 wave plate and the polarization beam splitter and used for reflecting the light of the polarization beam splitter to the 1/4 wave plate. A band-pass filter can be arranged between the polarization beam splitter and the wavelength beam splitter for filtering.
As shown in fig. 1 to 4, in fig. 3 and 4, S light represents vertically polarized light, P light represents horizontally polarized light, OOK modulated light λ1 and BPSK/QPSK modulated light λ2 emitted by a laser transmitter are vertically polarized light, reflected from a polarization beam splitter to a 1/4 wave plate after passing through an optical amplifier and a signal emitting module, converted into a right-hand circular polarization state, collimated and expanded by a telescope, deflected and emitted by a coarse directing mechanism. OOK modulated light lambda 3 and BPSK/QPSK modulated light lambda 4 received by the coarse directing mechanism are in a left-hand circular polarization state, are condensed by a telescope, are converted into horizontal polarized light by a 1/4 wave plate, are transmitted by a polarization beam splitter and a band-pass filter, the light lambda 3 is reflected to an energy beam splitter by the wavelength beam splitter, one part of the light is reflected to an incoherent detection communication module by the energy beam splitter, the other part of the light is transmitted to an incoherent detection catch module by the energy beam splitter, and the light lambda 4 is transmitted to the coherent detection module by the wavelength beam splitter after passing through the band-pass filter.
The coherent detection module can be a PD detector, the incoherent detection communication module can be an APD communication detector, and the incoherent detection tracking module can be a four-quadrant detector.
The multi-system transmission space laser communication system of the embodiment of the invention supports the simultaneous transmission of multi-system multi-protocol laser inter-satellite links, supports the transmission of coherent and incoherent laser information in two systems, can solve the problem of cross-constellation link establishment in different satellite systems and different systems, and realizes the interconnection and intercommunication of heterogeneous constellations.
With the development of laser communication, miniaturization is a major direction, and in order to reduce the volume of the apparatus, a structure of a common optical antenna is generally adopted for the transmission and reception channels. In order to meet the requirement that the laser communication system needs to transmit and receive signal light of different modes at the same time, a transmitter compatible with multiple modulation modes is adopted to transmit OOK and BPSK/QPSK modulated signal light of two kinds of frequency points 1550nm respectively, the transmission and the receiving of light beams are realized through a polarization beam splitter, the received multiple-mode signal light passes through a wavelength beam splitter and an energy beam splitter, and meanwhile, the capturing, the communication and the receiving of different detection modes (incoherent and coherent) are realized. The following describes a multi-system transmission space laser communication system of the embodiment by taking multi-system simultaneous transmission of an inter-satellite laser communication system of a non-beacon light capturing and two-way same-band transceiver system as an example.
As shown in fig. 1-5, a multi-carrier multi-system transmitter (i.e. a laser transmitter) of the terminal transmits signal light beams simultaneously as s polarized light, OOK modulated light is defined as λ1 and BPSK modulated light is defined as λ2, the light beams are transmitted through the same optical transmitting branch by an optical amplifier and an optical fiber combiner, reflected by a polarization beam splitter (Polarizing Beam Splitter, a 1/4 wave plate of a telescope is converted into a right-hand circular polarization state, collimated and expanded by an optical antenna (telescope) and deflected and directed by a coarse directing mechanism, signal light λ3 and λ4 received by the terminal are both left-hand circular polarized light, condensed by the optical antenna, converted into p light by a 1/4 wave plate, transmitted by the PBS and enter a receiving channel, the signal light λ3 reaches an incoherent detection receiver after being reflected by a wavelength splitting sheet, capturing and tracking and incoherent communication detection demodulation of the received light beams are respectively realized by an energy splitting sheet, and after the signal light is stably tracked and continuously established, the wavelength splitting sheet of the BPSK modulated signal light λ4 received by the terminal is coupled and transmitted, so that coherent detection communication is realized, as shown in fig. 2 and 3. The combination of PBS, wave plate, wavelength beam splitter and energy beam splitter realizes the beam splitting of multi-system transmitting signal light and receiving signal light.
The laser communication system supporting multi-system simultaneous transmission is typically composed of modules shown in fig. 4, and comprises a multi-system multi-carrier laser transmitter, an optical fiber amplifier, a fast reflector, various beam splitting components, an optical antenna and a coarse pointing mechanism. The multi-system multi-carrier laser transmitter realizes the emission of signal light with different frequency points in 1550nm wave band range, the PBS in the light splitting component realizes the receiving and transmitting of the signal light, the wavelength light splitting sheet realizes the light splitting of the received signal light with different modulation modes, the energy light splitting sheet is mainly used for the light splitting of the optical branch of the signal light capturing tracking and communication function of one system, the optical antenna realizes the beam expanding and collimation of the signal light, the coarse pointing mechanism (comprising azimuth and pitching axes) realizes the space two-dimensional pointing adjustment of the signal light, the heel capturing detector is a four-quadrant detector, the incoherent communication detector is an APD, and the coherent communication receiving is that the optical fiber is coupled to the optical fiber mixer and the local oscillator light is received by the PD detector.
The key for influencing the simultaneous transmission of multi-system optical signals of the laser communication terminal under the same-band beaconing-free optical capturing system is as follows:
the wavelength of the signal light emitted by the multi-system multi-carrier laser transmitter is selected in a 1550nm band frequency point specified by ITU, and the intervals of wavelengths of lambda 1, lambda 2, lambda 3 and lambda 4 are within 15 nm-25 nm, so that the wavelength splitting and the sharing of an optical amplifier are facilitated;
The multi-system multi-carrier laser transmitter needs to have the functions of OOK, BPSK/QPSK modulation and switching at the same time;
The stable link establishment can be realized by arranging the capturing and tracking detector on the optical carrier branch of one system, so that the transmission efficiency is improved, the cost is reduced, and the weight is reduced compared with the transmission mode of single-system signal light;
The received OOK modulated signal light needs to be split into incoherent detection receiving branches, and the received BPSK/QPSK modulated signal light needs to be split into coherent detection receiving branches.
Based on supporting multi-system laser inter-satellite link bidirectional transmission work under the same-band beaconing-free light system, the double-end laser communication terminal is assumed to be an A/B end, and the receiving and transmitting chain building work flow is shown in fig. 3 and 4:
1) The end A is used for transmitting right-handed circularly polarized signal lights lambda 1 and lambda 2 and receiving left-handed circularly polarized signal lights lambda 3 and lambda 4;
2) The B end is used for transmitting the left-hand circularly polarized signal lights lambda 3 and lambda 4 and receiving the left-hand circularly polarized signal lights lambda 1 and lambda 2;
3) After the double-end catch-up and chain establishment are completed, the service data are transmitted to the network layer after the received optical signals are processed by the detection communication receivers of all systems.
Compared with the prior art, the embodiment of the invention has the advantages that:
On the basis of a multi-system coherent light modulation technology, the embodiment of the invention realizes the simultaneous modulation of the amplitudes and phases of different frequency light carriers in a transmitter by connecting an amplitude modulator in parallel in a multi-carrier multi-system transmitter, improves the existing multi-system light modulation system, and can effectively improve the multi-system simultaneous transmission capability of a laser terminal by using light carriers with wavelength intervals of 15 nm-20 to respectively perform OOK and BPSK/QPSK modulation transmission;
The optical system of the embodiment of the invention realizes simultaneous receiving and transmitting of multi-mode and four-mode optical carrier signals by combining polarization beam splitting, energy beam splitting and wavelength beam splitting of the optical system on the basis of the existing single-mode transmission and same-wavelength polarization beam splitting technology, is different from a single-mode different-band color separation beam splitting scheme, and can realize the functions of OOK/incoherent detection, BPSK and QPSK/coherent detection of simultaneous transmission of two modes;
the space laser communication system of the embodiment of the invention can support the simultaneous detection and baseband processing of signal lights of multiple systems and multiple protocols, and compared with the existing space-based relay node laser terminal which can only support the information transmission of a single system and a single protocol, the space laser communication system of the embodiment of the invention requires multiple terminals to realize the system compatibility, and the weight and the power consumption of the laser communication system of the embodiment of the invention are greatly reduced.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211080576.4A CN115459846B (en) | 2022-09-05 | 2022-09-05 | Space laser communication system with multi-standard transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211080576.4A CN115459846B (en) | 2022-09-05 | 2022-09-05 | Space laser communication system with multi-standard transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115459846A CN115459846A (en) | 2022-12-09 |
| CN115459846B true CN115459846B (en) | 2025-01-21 |
Family
ID=84303015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211080576.4A Active CN115459846B (en) | 2022-09-05 | 2022-09-05 | Space laser communication system with multi-standard transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115459846B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119030613A (en) * | 2024-09-19 | 2024-11-26 | 成都光致星联科技有限公司 | An intersatellite laser communication transceiver system based on polarization conformal design |
| CN119276360B (en) * | 2024-12-09 | 2025-03-18 | 北京融为科技有限公司 | Satellite-to-ground data demodulation processing output control method, device and equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8076624B1 (en) * | 2007-09-19 | 2011-12-13 | Barchers Jeffrey D | Non-cooperative laser target enhancement system and method |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7327913B2 (en) * | 2001-09-26 | 2008-02-05 | Celight, Inc. | Coherent optical detector and coherent communication system and method |
| CN105490769B (en) * | 2015-12-09 | 2017-11-10 | 武汉邮电科学研究院 | Polarize unrelated from coherent OFDM fibre-optic transmission system (FOTS) and transmission method |
| CN106533562B (en) * | 2016-11-30 | 2019-03-29 | 上海卫星工程研究所 | Space multi-user's multi-standard satellite laser communications system and method |
| DE102017206347B4 (en) * | 2017-04-12 | 2019-07-04 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Transmitter for a free-jet optical communication system and free-jet optical communication system |
| US11228370B2 (en) * | 2017-06-14 | 2022-01-18 | Transcelestial Technologies Pte Ltd | High speed communication |
| CN109039462B (en) * | 2018-07-19 | 2020-04-03 | 中国科学院西安光学精密机械研究所 | Multi-modulation format compatible high-speed laser signal phase-lock-free receiving system and method |
| US10754091B1 (en) * | 2019-03-18 | 2020-08-25 | Inphi Corporation | Integrated coherent optical transceiver, light engine |
| US11728888B2 (en) * | 2019-03-20 | 2023-08-15 | Nec Corporation | Reception device for optical space communication, optical space communication system, and method for controlling optical space communication device |
| CN110161280B (en) * | 2019-05-22 | 2021-02-02 | 中国科学院上海光学精密机械研究所 | Hybrid detection Doppler laser radar wind speed measurement system and measurement method thereof |
| CN111122500A (en) * | 2020-01-15 | 2020-05-08 | 大连理工大学 | A gas concentration remote sensing detection device and method based on coherent detection method |
| US11159235B1 (en) * | 2020-05-28 | 2021-10-26 | CACI, Inc.—Federal | Optical communication terminal for bidirectional communication |
| CN114268361B (en) * | 2021-12-20 | 2023-09-26 | 中国科学院微小卫星创新研究院 | Multiple-input multiple-output inter-satellite communication diversity system and method based on photogenerated terahertz |
| CN114553313B (en) * | 2021-12-31 | 2023-11-17 | 华为技术有限公司 | An optical signal transmission device and optical transmission system |
-
2022
- 2022-09-05 CN CN202211080576.4A patent/CN115459846B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8076624B1 (en) * | 2007-09-19 | 2011-12-13 | Barchers Jeffrey D | Non-cooperative laser target enhancement system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115459846A (en) | 2022-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115459846B (en) | Space laser communication system with multi-standard transmission | |
| US5661582A (en) | Photonic interconnect and photonic processing for communications and data handling satellites | |
| JP6220347B2 (en) | Optical dispersion antenna system | |
| CN113630182B (en) | A microwave photon control system and method based on on-chip analog-to-digital signal | |
| CN113765589B (en) | A terahertz wireless optical fiber extension device and its real-time transmission system | |
| CN107809300B (en) | A kind of point-to-multipoint laser space communication system based on wavelength-division de-multiplexing technique | |
| EP0871343A2 (en) | Splitterless optical broadcast switch | |
| US10069565B2 (en) | Satellite system using optical gateways and onboard processing | |
| EP3293894A1 (en) | Satellite system using optical gateways and ground based beamforming | |
| US12051859B2 (en) | Apparatus and methods for transmitting signals using optical lens as a beamformer | |
| CN111371506A (en) | An optically generated optically-carried terahertz passive optical network system and transmission method | |
| CN114499665B (en) | A device and method for many-to-many laser communication networking | |
| US11750296B2 (en) | Optical communication link ranging | |
| JPH11511613A (en) | Optical satellite feeder link | |
| CN111464240B (en) | Vector radio frequency signal generation system based on polarization multiplexing intensity modulator | |
| CN108768516A (en) | The laser space communication terminal of wavelength fast tunable | |
| CN110572210A (en) | A multi-user laser communication system and method with flexible beam control | |
| Khan et al. | Review of studies that integrate the free space optics with fiber optics | |
| CN115913371A (en) | Photon-assisted terahertz optical fiber wireless communication real-time transmission system | |
| CN118282527A (en) | Multi-frequency optical local oscillation generating device, method and communication system | |
| US11909424B2 (en) | Apparatus and methods for receiving signals using optical lens as a beamformer | |
| CN109194405A (en) | Full duplex fibre-optical wireless fusion communication system | |
| Mekonnen et al. | Over 40 Gb/s dynamic bidirectional all-optical indoor wireless communication using photonic integrated circuits | |
| CN112910550A (en) | Multi-node space laser communication method based on dual wavelengths | |
| CN114465669B (en) | Intermediate frequency signal and millimeter wave signal mixed transmission system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |