CN105204042A - High-precision GPS/BDS ship-mounted receiver - Google Patents

Abstract

The invention discloses a high-precision GPS/BDS shipborne receiver, comprising a radio receiver board module, a BDS/GPS high-precision dual-mode positioning board module, a high-precision orientation board module, an AIS information receiving module, a mother board, a front panel, Rear panel and working power supply circuit; the output end of the base station is connected with the input end of the radio receiver board module, and the output end of the radio receiver board module is connected with the first input end of the BDS/GPS high-precision dual-mode positioning board module Connect, the output end of described AIS information receiving module is connected with the input end of high-precision directional board module, the output end of described high-precision directional board module is connected with the second input end of BDS/GPS high-precision dual-mode positioning board module connect. The invention is convenient to use and has high positioning precision.

Description

High precision GPS/BDS shipborne receiver

technical field

The invention relates to the technical field of electronic information, in particular to a high-precision GPS/BDS shipborne receiver.

Background technique

Digital broadcasting systems can be used to provide, for example, radio and television services. Multiple services can be provided in a signal by multiplexing. Time slicing is a type of time division multiplexing used in Digital Audio Broadcasting (DAB) systems. In such a system, services that may include different radio stations are assigned broadcast time slots in the broadcast signal. Thus, for example, each service is transmitted as a series of temporally separated bursts that can be reconstructed to form a continuous audio service. Time slicing is advantageous because a receiver device, once synchronized with a service it wishes to receive, can be turned off in the time between bursts corresponding to the desired service, thereby saving power.

The receiver is a circuit system with the following components: antenna, filter, amplifier, A/D converter. The navigation and positioning signals sent by GPS satellites are an information resource that can be shared by countless users. For the vast number of users on land, sea and space, as long as users have receiving equipment capable of receiving, tracking, transforming and measuring GPS signals, that is, GPS signal receivers, they can use GPS signals for navigation and positioning measurements at any time. It can receive signals from multiple GPS satellites at the same time. In order to separate the received signals from different satellites to realize tracking, processing and measurement of satellite signals, devices with such functions are called antenna signal channels.

Time-serving receiver This type of receiver mainly uses the high-precision time standard provided by GPS satellites for time service, and is often used for time synchronization in observatories and radio communications.

At present, there is a lack of a high-precision GPS/BDS shipborne receiver with high positioning accuracy.

Contents of the invention

In view of the above problems, the present invention provides a high-precision GPS/BDS shipboard receiver with high positioning accuracy.

The technical problem solved by the present invention can be realized by adopting the following technical solutions: a high-precision GPS/BDS shipborne receiver of the present invention, the high-precision GPS/BDS shipborne receiver includes a radio receiving board module, a BDS/GPS High-precision dual-mode positioning board module, high-precision orientation board module, AIS information receiving module, motherboard, front panel, rear panel and working power supply circuit;

The exterior of the high-precision GPS/BDS shipborne receiver is provided with a communication controller, a base station and an external power supply;

The output end of the base station is connected with the input end of the radio receiving board module, and the output end of the radio receiving board module is connected with the first input end of the BDS/GPS high-precision dual-mode positioning board module, and the AIS information receiving The output end of the module is connected with the input end of the high-precision orientation board module, and the output end of the high-precision orientation board module is connected with the second input end of the BDS/GPS high-precision dual-mode positioning board module; the BDS/GPS The output end of the high-precision dual-mode positioning board module is connected with the communication controller; the high-precision GPS/BDS shipboard receiver is connected with the external power supply through an electrical connection line; the external power supply is connected with the working power supply circuit ; The motherboard is provided with a radio receiving board module, a BDS/GPS high-precision dual-mode positioning board module, a high-precision orientation board module, an AIS information receiving module and a working power supply circuit; the front panel and the rear panel are respectively connected to the motherboard connected by fasteners.

Further, the high-precision GPS/BDS shipboard receiver is provided with a housing outside.

Further, the front panel is provided with a liquid crystal touch screen, a human body infrared sensor, operation buttons and two GNSS radio frequency interfaces;

The communication controller is respectively connected with a liquid crystal touch screen, a human body infrared induction sensor, an operation button, and two GNSS radio frequency interfaces.

Furthermore, the two GNSS radio frequency interfaces are a UHF interface and an AIS board radio interface.

Further, the front panel is also provided with a first temperature and humidity sensor; the rear panel is provided with a second temperature and humidity sensor; the first temperature and humidity sensor and the second temperature and humidity sensor are respectively connected to the communication controller .

Beneficial effects: the instrument structure of the present invention is easy to use, has high positioning accuracy, and the highly flexible split receiver antenna design can be applied to various attitude measurement systems, and can provide accurate real-time heading and pitch attitude angles of static or dynamic platforms. High-precision GPS/BDS shipborne terminals need to achieve high-precision positioning and orientation, and the realization of high-precision positioning functions depends on the pseudo-range correction numbers broadcast by shore-based stations. After receiving the pseudo-range correction number, the ship-borne terminal corrects the pseudo-range obtained by its own measurement to obtain higher-precision pseudo-range observations, thereby improving the positioning accuracy. In offshore and inland waterways, this method can achieve a positioning accuracy of about 1 meter.

Compared with prior art, the present invention has following advantage:

(1) The BDS/GPS high-precision dual-mode positioning board module uses the received differential corrections to perform pseudo-range differential positioning to achieve high-precision positioning, and is responsible for sending the BDS/GPS high-precision dual-mode positioning board module to the high-precision directional board module observation data. BDS/GPS dual-core dual-star quad-frequency GNSS module can be used for single BDS or single GPS positioning, or joint positioning; a single set of equipment can realize high-precision positioning, azimuth angle and pitch angle or roll angle measurement; high dynamic data output, data update The frequency supports 1Hz, 2Hz, 5Hz; the built-in 2000 volt photoelectric isolation can effectively protect the receiver from overcurrent and overvoltage to prevent lightning strikes; the built-in diode power supply protection function can prevent the positive and negative polarities of the power supply from being reversed; support automatic differential, differential format support RTCM2.X, RTCM3.X and CMR; two power ports, two serial ports, to meet more needs. 100MB memory data storage, can automatically record raw data.

(2) The high-precision orientation board module uses the received observation data of the BDS/GPS high-precision dual-mode positioning board module to make a difference with its own observation data, and calculate the attitude angle, direction angle and pitch of the baseline formed by the two antennas of the carrier horn. Adopt BDS+GPS dual-system five-frequency high-dynamic calculation engine, truly realize BDS+GPS dual-star calculation, adapt to harsher and longer-distance positioning environments, and support GPS/BDS single-system independent positioning and BDS+GPS multi-system combination Positioning, hardware size, interface, and data instructions are compatible with imported motherboards.

(3) The radio receiving board module receives the differential corrections from the shore-based reference station, and then sends them to the BDS/GPS high-precision dual-mode positioning board module through the serial port. The radio receiving board module is designed and manufactured in strict accordance with industrial-grade product technology, adopts superheterodyne secondary frequency conversion circuit and advanced frequency synthesis technology, and has outstanding advantages such as high reliability, high sensitivity, low bit error rate, and strong anti-infection ability. Using temperature compensation circuit, the frequency stability reaches ±1.5ppm, the working environment temperature range can reach -40°C-+85°C, low power consumption, and small size.

Description of drawings

Fig. 1 is a schematic diagram of the present invention;

Fig. 2 is a structural representation of the present invention;

Among them: 1 radio receiving board module, 2BDS/GPS high-precision dual-mode positioning board module, 3 high-precision orientation board module, 4AIS information receiving module, 5 base station, 6 communication controller, 7 motherboard, 8 front panel, 9 rear panel , 10 shells.

Detailed ways

The idea, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

As shown in Fig. 1 and Fig. 2, a kind of high-precision GPS/BDS shipboard receiver of the present invention, described high-precision GPS/BDS shipboard receiver comprises radio station receiving board module 1, BDS/GPS high-precision dual-mode positioning Board module 2, high-precision directional board module 3, AIS information receiving module 4, motherboard 7, front panel 8, rear panel 9 and working power supply circuit;

The exterior of the high-precision GPS/BDS shipboard receiver is provided with a communication controller 6, a base station 5 and an external power supply;

The output end of described base station 5 is connected with the input end of radio station receiving board module 1, and the output end of described radio station receiving board module 1 is connected with the first input end of BDS/GPS high-precision dual-mode positioning board module 2, so The output end of the AIS information receiving module 4 is connected with the input end of the high-precision orientation board module 2, and the output end of the high-precision orientation board module 3 is connected with the second input end of the BDS/GPS high-precision dual-mode positioning board module 2 connected; the output end of the BDS/GPS high-precision dual-mode positioning board module 2 is connected with the communication controller 6; the high-precision GPS/BDS shipboard receiver is connected with the external power supply through an electrical connection line; the The external power supply is connected to the working power supply circuit; the motherboard 7 is provided with a radio receiving board module 1, a BDS/GPS high-precision dual-mode positioning board module 2, a high-precision directional board module 3, an AIS information receiving module 4 and Working power supply circuit; the front panel 8 and the rear panel 9 are respectively connected to the motherboard 7 through fixing pieces.

The signal of the differential data of the base station 5 is input to the high-precision GPS/BDS shipborne receiver, and the station receiving board module 1 inputs the signal of the differential data into the BDS/GPS high-precision dual-mode positioning board module 2, and the AIS The information receiving module 4 inputs the signals of information such as the position of the surrounding ships into the high-precision directional board module 3, and the high-precision directional board module 3 outputs the signals of the direction information of the own ship and the position information of the surrounding ships into the BDS/GPS high-precision dual-mode positioning board module 2. The BDS/GPS high-precision dual-mode positioning board module 2 outputs data signals to the communication controller. The AIS information receiving module 4 receives the AIS information broadcast by the shore base, and then sends the information to the receiving board module 1 of the radio station through a serial port data signal.

The motherboard 7 is responsible for providing power and various signal interfaces to other boards and components. Motherboard 7 adopts Texas Instruments TPS54360 power chip, which integrates MOSFETs, supports 1% industry-leading reference accuracy, supports a wide input voltage of 4.5V-60V and the industry's largest temperature range, supports 3.5A continuous current, 4.5A minimum peak sensing converter current limit, and is protected against overtemperature, overvoltage, and frequency foldback.

A casing 10 is arranged outside the high-precision GPS/BDS shipboard receiver.

The front panel 8 is provided with a liquid crystal touch screen, a human body infrared sensor, operation buttons and two GNSS radio frequency interfaces;

The communication controller 6 is respectively connected with a liquid crystal touch screen, a human body infrared induction sensor, an operation button, and two GNSS radio frequency interfaces.

The two GNSS radio frequency interfaces are a UHF interface and an AIS board radio interface.

The front panel 8 is also provided with a first temperature and humidity sensor; the rear panel 9 is provided with a second temperature and humidity sensor; the first temperature and humidity sensor and the second temperature and humidity sensor are respectively connected to the communication controller 6 .

Table 1 is performance index of the present invention, and table 1 is as follows:

It can be seen from Table 1 that the instrument structure of the present invention is easy to use, has high positioning accuracy, and the highly flexible split receiver antenna design can be applied to various attitude measurement systems, and can provide accurate real-time heading and pitch attitude angles of static or dynamic platforms .

High-precision GPS/BDS shipborne terminals need to achieve high-precision positioning and orientation, and the realization of high-precision positioning functions depends on the pseudo-range correction numbers broadcast by shore-based stations. After receiving the pseudo-range correction number, the ship-borne terminal corrects the pseudo-range obtained by its own measurement to obtain higher-precision pseudo-range observations, thereby improving the positioning accuracy. In offshore and inland waterways, this method can achieve a positioning accuracy of about 1 meter.

Compared with prior art, the present invention has following advantage:

(1) BDS/GPS high-precision dual-mode positioning board module 2 uses the received differential corrections to perform pseudo-range differential positioning to achieve high-precision positioning, and is responsible for sending BDS/GPS high-precision dual-mode positioning to high-precision directional board module 3 Observation data for board module 2. BDS/GPS dual-core dual-star quad-frequency GNSS module can be used for single BDS or single GPS positioning, or joint positioning; a single set of equipment can realize high-precision positioning, azimuth angle and pitch angle or roll angle measurement; high dynamic data output, data update The frequency supports 1Hz, 2Hz, 5Hz; the built-in 2000 volt photoelectric isolation can effectively protect the receiver from overcurrent and overvoltage to prevent lightning strikes; the built-in diode power supply protection function can prevent the positive and negative polarities of the power supply from being reversed; support automatic differential, differential format support RTCM2.X, RTCM3.X and CMR; two power ports, two serial ports, to meet more needs. 100MB memory data storage, can automatically record raw data.

(2) The high-precision orientation board module 3 utilizes the observation data of the received BDS/GPS high-precision dual-mode positioning board module 2 to make a difference with its own observation data, and calculates the attitude angle and the direction angle of the baseline formed by the two antennas of the carrier and pitch angle. Adopt BDS+GPS dual-system five-frequency high-dynamic calculation engine, truly realize BDS+GPS dual-star calculation, adapt to harsher and longer-distance positioning environments, and support GPS/BDS single-system independent positioning and BDS+GPS multi-system combination Positioning, hardware size, interface, and data instructions are compatible with imported motherboards.

(3) The radio receiving board module 1 receives the differential correction data from the shore-based reference station, and then sends it to the BDS/GPS high-precision dual-mode positioning board module 2 through the serial port. The radio receiving board module 1 is designed and manufactured in strict accordance with industrial-grade product technology, adopts superheterodyne secondary frequency conversion circuit and advanced frequency synthesis technology, and has outstanding advantages such as high reliability, high sensitivity, low bit error rate, and strong anti-infection ability. Using temperature compensation circuit, the frequency stability reaches ±1.5ppm, the working environment temperature range can reach -40°C-+85°C, low power consumption, and small size.

The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall be within the scope of protection defined by the claims.

Claims (5)

1. A high-precision GPS/BDS shipborne receiver is characterized in that: the high-precision GPS/BDS shipborne receiver includes a radio receiving board module, a BDS/GPS high-precision dual-mode positioning board module, and a high-precision orientation board Module, AIS information receiving module, motherboard, front panel, rear panel and working power supply circuit; The exterior of the high-precision GPS/BDS shipborne receiver is provided with a communication controller, a base station and an external power supply; The output end of the base station is connected with the input end of the radio receiving board module, and the output end of the radio receiving board module is connected with the first input end of the BDS/GPS high-precision dual-mode positioning board module, and the AIS information receiving The output end of the module is connected with the input end of the high-precision orientation board module, and the output end of the high-precision orientation board module is connected with the second input end of the BDS/GPS high-precision dual-mode positioning board module; the BDS/GPS The output end of the high-precision dual-mode positioning board module is connected with the communication controller; the high-precision GPS/BDS shipboard receiver is connected with the external power supply through an electrical connection line; the external power supply is connected with the working power supply circuit ; The motherboard is provided with a radio receiving board module, a BDS/GPS high-precision dual-mode positioning board module, a high-precision orientation board module, an AIS information receiving module and a working power supply circuit; the front panel and the rear panel are respectively connected to the motherboard connected by fasteners. 2. The high-precision GPS/BDS ship-borne receiver according to claim 1, characterized in that: the high-precision GPS/BDS ship-borne receiver is provided with a housing outside. 3. the high-precision GPS/BDS shipborne receiver according to claim 1, is characterized in that: said front panel is provided with liquid crystal touch screen, human body infrared induction sensor, operation button and two GNSS radio frequency interfaces; The communication controller is respectively connected with a liquid crystal touch screen, a human body infrared induction sensor, an operation button, and two GNSS radio frequency interfaces. 4. The high-precision GPS/BDS shipborne receiver according to claim 3, characterized in that: the two GNSS radio frequency interfaces are a UHF interface and an AIS board radio interface. 5. high precision GPS/BDS shipboard receiver according to claim 3, is characterized in that: described front panel is also provided with first temperature and humidity sensor; Described rear panel is provided with second temperature and humidity sensor; The first temperature and humidity sensor and the second temperature and humidity sensor are respectively connected to the communication controller.