RU2360362C2 - Method of remote controlling transmitting radio centre - Google Patents

Abstract

FIELD: communications.

SUBSTANCE: present invention relates to telecommunications and can be used for transmitting information electric signals from a receiving radio centre (RRC), located in the immediate vicinity of a command signal centre, to a transmitting radio centre (TRC), located outside its limits at a distance of 5 km. N information primary electric signals with frequency F_{pes i} (i=1, 2,…,N) are transmitted from N transmitting terminal devices to the receiving radio centre. In the transmitting radio centre each of the N radio signals, meant for transmission into the radio-wave propagation medium, is power amplified and directed to the transmitting antenna. In the receiving radio centre, N information primary electric signals are converted to N radio signals with frequency f_{rs i} (i=1, 2,…,N), the set of which is converted to a group high-frequency signal with frequency f_ghf. In the transmitting radio centre, N radio signals are selected from the received group high-frequency signal, meant for transmission into the radio-wave propagation medium, with frequency f_{rs i} (i=1, 2,…, N).

EFFECT: cutting the number of conversions of the received signal and increased mobility and durability of the transmitting radio centre.

2 cl, 1 dwg, 1 tbl

Description

The invention relates to the field of telecommunications and can be used to transmit informational electrical signals from a receiving radio center (PRC) located in the immediate vicinity of the communication center of a control point to a transmitting radio center (MPC) remote and located at a distance of 5 km, and also for remote control of its operation modes.

A known method of remote control of a radio transmitter described in the book "Fundamentals of radio communication technology" authors Verzunova MV, Zubchenko NG, Popova KN, Chelombitko VI / Ed. M.V. Verzunova. - M .: Military Publishing House, 1972, on pages 507-509, in which an informational primary electric signal with a frequency of F _pes comes from the transmitting terminal device to the input of the radio transmitter remote from the transmitting terminal device at a certain distance, along the physical circuit, in the radio transmitter the electrical signal is converted into a radio signal with a frequency f _pc , amplify it by power and send to a transmitting antenna.

A known method of remote control of a radio transmitter described in the book "Military equipment of radio communications" authors K. N. Popov, V. F. Pivovarov, N. P. Skripnik. / Ed. K.N. Popova. - M .: Military Publishing House, 1982, on pages 412-414, in which the information primary electric signal with a frequency F _pes coming from the transmitting terminal device in the receiving part of the radio station is converted into a high-frequency signal with a frequency F _ice , which is transmitted by radio relay or remote control line cable for radio transmitting portion remote from the receiving part to a considerable distance, which reconverts the received radio frequency signal with a frequency F in the information _LDU primary electron matic signal with frequency F _PES, and fed it to the input of the transmitter, wherein the primary electrical signal is converted into a radio signal with frequency f _pc, amplified in power, and is sent to a transmission antenna for emitting a radio wave propagation environment.

The disadvantage of these methods is the presence of additional conversion in the radio transmitter (transmitting part of the radio station) of the information primary electric signal with a frequency of F _pes into a radio signal with a frequency of f _pc , which leads to an increase in the composition of the equipment in the transmitting part of the radio station, thereby reducing the mobility and survivability of the transmitting part of the radio station, which is the most vulnerable to the systems of radio reconnaissance and fire destruction of the enemy in a combat situation.

Closest to the proposed one is a method for remote control of a transmitting radio center, described in the book “Military Radio Communication Systems. Part 1. Theoretical foundations of the construction of military radio communication facilities and systems ”by Ignatov VV, Kilimnik Yu.P., Nikolsky IN, Pivovarova VF, Prokhorova VK, Repin GA, Skripnik N.P., Sharova A.N. / Ed. V.V. Ignatova. - L .: YOU, 1989, on pages 356-366, adopted as a prototype.

In the prototype method, N information primary electrical signals with a frequency of F _{pes i} (i = 1, 2, ..., N) coming from N transmitting terminal devices are converted at the receiving radio center into a group high-frequency signal with a frequency of F _GWh , which is from the receiving radio center transmit via radio relay or cable group line of remote control to a transmitting radio center spaced at a distance of 5 km, at which the group high-frequency signal is inversely converted to N primary electrical signals per hour otami F _{PES i (i} = 1, 2, ..., N), are applied to inputs of N transmitters, each of which is a primary electric signal is converted into a radio signal with frequency f _{pc i (i} = 1, 2, ..., N) , their power gain and transmission to the antenna for radiation into the medium of propagation of radio waves.

The disadvantage of the prototype method is the low mobility and survivability of the MPAC in a combat situation, due to the cumbersome equipment that implements a large number of conversions of a group high-frequency signal received from a receiving radio center into N radio signals with frequencies f _{pc i} (i = 1, 2, ..., N). So, in the prototype method containing N radio transmitters, (N + 1) conversion of the received signal is carried out:

- converting one group frequency signal with a frequency F in N _HFO primary electrical signals with frequencies _PES F _{i (i = 1,2, ...,} N);

- N conversions of primary electrical signals with a frequency of F _{pes i} (i = 1,2, ..., N) into radio signals with a frequency of f _{pc i} (i = 1, 2, ..., N), respectively.

The purpose of the proposed method for remote control of a transmitting radio center is to increase the mobility and survivability of a remote transmitting radio center due to a significant reduction in the number of transformations of the received signal and, accordingly, the amount of equipment that implements these transformations. At the same time, from the (N + 1) transformations of the received signal at the PDRC, N transformations of the primary electric signals into radio signals are excluded.

To eliminate these disadvantages in the method, which consists in the fact that at the receiving radio center N information primary electrical signals with a frequency of F _{pes i} (i = 1,2, ..., N) are received from N transmitting terminal devices, each of the N radio signals at the transmitting radio center increase in power and fed to a transmitting antenna for emitting a radio wave propagation environment, according to the invention in the receiving radio center convert N primary information signals in N radio signals with frequencies f _{pc i (i} = 1, 2, ..., N), which set of transform comfort in a group frequency signal with frequency f _HFO, which by remote control line is supplied to the transmitting radio center, in which from the received group frequency signal with frequency F _HFO isolated N radio signals with frequencies f _{pc i (i} = 1, 2, ..., N) .

Moreover, to reduce to an acceptable value the value of the coefficient of nonlinear distortion of the generated radio signals with frequencies f _{pc i} (i = 1, 2, ..., N), the frequency of the group high-frequency signal f _{GHF is} chosen to be at least 1000 times greater than the maximum frequency of the radio signal f _{max pc} .

In the proposed method for remote control of a transmitting radio center, N information primary electrical signals with a frequency of F _{pes i} (i = 1, 2, ..., N) coming from N transmitting terminal devices are converted into N radio signals with frequencies f _{pc i} (i = 1, 2, ..., N), the combination of which is converted into a group high-frequency signal with a frequency f _GWh , which is transmitted from the receiving radio center via a radio relay or cable remote control line to the transmitting radio center, on which from the received group of a high-frequency signal with a frequency of F _GWh , N radio signals with frequencies f _{pc i} (i = 1, 2, ..., N) are allocated, each of which is amplified by power and sent to a transmitting antenna for radiation into the radio wave propagation medium.

To reduce to an acceptable value the value of the coefficient of nonlinear distortion of the generated radio signals with frequencies f _{pc i} (i = 1, 2, ..., N), the frequency of the group high-frequency signal f _{GHF is} chosen higher than the maximum frequency of the radio signal f _{max pc} = max {f _{pc i} }, ( i = 1, 2, ..., N) not less than 1000 times, that is, it is necessary to fulfill the condition f _GWh ≥1000 f _{max pc} .

This allows, due to a significant reduction in the number of conversions of the received high-frequency group signal at the transmitting radio center and a corresponding reduction in the number of basic equipment that implements these transformations, to increase the mobility and survivability of the MPRC, which has the lowest reconnaissance protection among all elements of the communication center in a combat situation and is the main target of the means intelligence and fire damage.

In the proposed method for remote control of a transmitting radio center at the PDRC, N processes of converting information primary electric signals to radio signals are eliminated, and only each of the N radio signals extracted from a group high-frequency signal is amplified. Therefore, at the remote MPC, N devices for converting primary electrical signals into radio signals are excluded, and only a group of radio-emitting equipment (power amplifiers, antenna matching and feeder devices) is provided, which provides amplification and emission of N radio signals.

The reduction in the number of conversions of the received group high-frequency signal at the transmitting radio center is illustrated in Table 1, which shows the conversion of the information of the primary electrical signal into a radio signal in the radio path.

Thus, in the proposed method, the following operations are carried out.

1. A new sequence of the total conversion of N primary electrical signals to N radio signals in the radio path when removing radiating means located at the transmitting radio center from transmitting terminals located at the receiving radio center (transformations of N information primary electrical signals to N radio signals at the receiving radio center are introduced, and on the transmitting radio center, N conversions of primary electrical signals to radio signals are excluded).

2. New conditions for the formation of the frequency of a group high-frequency signal

f _GVH transmitted to the remote control line between the receiving radio center and the remote transmitting radio center, consisting in the choice of relations between the values of the frequency f _GVH and the maximum frequency of the radio signal

f _{max pc} .

The proposed method can be implemented by the following system.

The remote control system of the transmitting radio center is shown in the drawing, where it is indicated:

1 ₁ , ..., 1 _N - sources of information modulating signal;

2 _1, ..., 2 _N - modulators, low-frequency signal frequency F _{i nch} a high-frequency signal _HF frequency F _i (i = 1, 2, ..., N);

3 - a device for compaction of high-frequency signals with a frequency F RF _i (i = 1, 2, ..., N) into a group signal with a carrier frequency F _VHF ;

4 - remote control line;

5 - decompression device;

6 ₁ , ..., 6 _N - power amplifiers of a high-frequency signal F RF _i (i = 1, 2, ..., N);

7 ₁ , ..., 7 _N - matching devices;

8 ₁ , ..., 8 _N - antenna-feeder devices.

The system contains at the communication node N sources of information modulating signal 1 ₁ ... 1 _N , the outputs of which are connected to the inputs of the corresponding modulators of low-frequency signals 2 ₁ ... 2 _N , the outputs of which are connected to the corresponding inputs of the sealing device 3 high-frequency signals with a frequency of F RF _i (i = 1 , 2 ... N), the output of which is connected via a remote control line 4 to the input of the decompression device of high-frequency signals 5 at the transmitting radio center, each of the N outputs of the decompression device 5 is connected to the corresponding circuit a kidney consisting of a series-connected power amplifier of a high-frequency signal F RF _i (i = 1, 2, ..., N) 6 ₁ ... 6 _N , a matching device 7 ₁ ... 7 _N and an antenna-feeder device 8 ₁ ... 8 _N.

The system works as follows.

The initial low-frequency signals from information sources 1 ₁ ... 1 _{N are} modulated into high-frequency signals, which are modulated into a group signal transmitted via a radio or cable remote control line to a transmitting radio center, in which each of the high-frequency signals is amplified, matched, and fed to the corresponding transmitting antenna 8 ₁ ... 8 _N.

Claims (2)

1. The method of transmitting electrical information signals to a geographically spaced transmitting radio center of a radio communication system, which consists in the fact that in a receiving radio center N information primary electrical signals with a frequency of F _{pes i} (i = 1, 2, ..., N) are received from N transmitting terminal devices , in the transmitting radio center, each of the N radio signals intended for radiation into the medium of propagation of radio waves is amplified in power and sent to the transmitting antenna, characterized in that N information is converted in the receiving radio center primary electrical signals to N radio signals intended for radiation into the medium of radio wave propagation with frequencies f _{pc i} (i = 1, 2, ..., N), the combination of which is converted into a group high-frequency radio signal with frequency f _GWh , which is relay or cable the remote control line enters the transmitting radio center, in which N radio signals with frequencies f _{pc i} (N _pc) are extracted from the received group high-frequency radio signal with a frequency of _fhhh ; i = 1, 2, ..., N). 2. The transmission method according to claim 1, characterized in that the frequency of the group high-frequency radio signal f _{GWh is} chosen to be at least 1000 times greater than the maximum frequency of the radio signal f _{pc i} (i = 1, 2, ..., N).