JPH0697860A - Transmission/reception power level automatic switching system for artificial satellite - Google Patents

Abstract

PURPOSE:To reduce operation restrictions/load on a ground station and an artificial satellite operator by automatically switching the transmission/reception power level in the communication system for artificial satellite to a level adapted to the other party of communication. CONSTITUTION:The satellite bus system including a satellite bus-system transmission/reception antenna 1, a diplexer 3a, a satellite bus-system reception attenuator 4, a satellite bus-system transmission attenuator 5, a satellite bus- system receiver 7, a command decoder 8, a satellite bus-system transmitter 9, and a telemetry encoder 10 processes the distance and the direction of the other party of communication, which are obtained by satellite distance and direction measuring part 18, and reception power level information from the other party and controls the satellite bus-system reception attenuator and the satellite bus-system transmission attenuator 5 by an attenuator level control part 17 so that the reception level value calculated by these information coincides with a target design value. The same control is performed with respect to the satellite mission system.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic transmission / reception power level switching system for artificial satellites, and more particularly to an automatic transmission / reception power level switching system for artificial satellites that automatically switches the transmission / reception power level to a level adapted to a communication partner.

[0002]

2. Description of the Related Art Conventionally, when switching the transmission / reception power level of an artificial satellite, when the artificial satellite is unmanned, the operator makes a judgment based on various information on tracking and control at an operation station on the earth, It used the method of sending commands and switching.

In addition, when the artificial satellite is manned, whether the astronaut makes a judgment based on various information on the aircraft and switches,
Or, similar to the case of unmanned, the operation station on earth sent a command to switch.

[0004]

The above-mentioned conventional switching of the transmission / reception power level of the artificial satellite is based on the premise that a human being makes a judgment. Therefore, the artificial satellite derived from the operation station and the operator on the earth. There are many operational restrictions, and it is difficult to adopt it for future spacecraft, which is expected to fly many in the future.

The object of the present invention is to solve the above-mentioned drawbacks, relieve the operational restrictions of artificial satellites derived from operation stations and operators on the earth, and to realize a large number of flights of future spacecraft. It is to provide a method for switching the transmission / reception power level of an artificial satellite that can be easily adopted.

[0006]

According to the automatic transmission / reception power level switching system for an artificial satellite of the present invention, the transmission / reception power of the artificial satellite in the communication system is set to one of the distance to the communication partner, the direction, and the received power, or It has a configuration to automatically switch to a communication partner by using the combination information.

In addition, according to the automatic transmission / reception power level switching system for artificial satellites of the present invention, the apparent transmission / reception power level viewed from the other party of communication is controlled so that the reception level becomes a designed constant value, or ranging, positioning is performed. It is configured to control the apparent transmission / reception power level viewed from the other party of communication so as to match the calculated reception level calculated based on the information.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention.
In the embodiment of FIG. 1, the artificial satellite communication system is composed of two types of systems, a satellite bus communication system and a satellite mission communication system.

In a satellite bus communication system, a satellite status monitor signal called a telemetry command, a control signal, and a ranging / positioning signal are usually handled.

Normally, these signals are transmitted / received to / from the artificial satellite via the satellite bus system transmission / reception antenna 1, and these signals are separated by the diplexer 3a. In the present embodiment, a satellite bus system reception attenuator 4 and a satellite bus system transmission attenuator 5 are arranged in the latter stage of the diplexer 3a for the satellite bus reception system and in the former stage of the diplexer 3a for the satellite bus transmission system, respectively. The satellite bus system attenuator level control signal 6 generated by the level control unit 17 automatically controls / switches.

Thus, it is possible to automatically control / switch the apparent transmission / reception power level of the satellite bus system receiver 7 and the satellite bus system transmitter 9 viewed from the other party.

Satellite bus system attenuator level control signal 6
As a method of generating, the reception level of the satellite bus receiver 7 of the telemetry signal edited by the telemetry encoder (or the central unit) 10 is used, and the reception level is generated so as to have a constant design value.
Alternatively, using the information of the satellite ranging / positioning unit 18,
There is a method such as generation so as to match the calculated reception level value.

The satellite bus system communication system has been described above, but the satellite mission system communication system communication satellite communication system communication system 1 has a similar concept. The satellite mission system attenuator level control signal 1 is generated by the attenuator level control unit 17.
By controlling / switching the satellite mission system reception attenuator 12 and the satellite mission system transmission attenuator 13 by 1, the apparent transmission / reception power level viewed from the other party of communication can be automatically controlled / switched.

[0015]

As described above, according to the present invention, one or a combination of the information on the distance to the communication partner, the direction, and the received power level from the partner, or information on a combination thereof is used to communicate with the own communication system. By automatically switching the transmission and reception power level of the one that is suitable for the other party,
There is an effect that the load on the operation station on the earth and the operator due to these operations is unnecessary and the operational restrictions of the artificial satellite can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

[Explanation of symbols]

1 satellite bus system transmitting / receiving antenna 2 satellite mission system transmitting / receiving antenna 3 diplexer 4 satellite bus system receiving attenuator 5 satellite bus system transmitting attenuator 6 satellite bus system attenuator level control signal 7 satellite bus system receiver 8 command decoder or central unit 9 satellite bus system Transmitter 10 Telemetry encoder or central unit 11 Satellite mission system attenuator level control signal 12 Satellite mission system reception attenuator 13 Satellite mission system transmission attenuator 14 Satellite mission system receiver 15 Satellite mission system transmitter 16 Satellite mission system data processor 17 Attenuator Level control unit 18 Satellite ranging / positioning unit

Claims (2)

[Claims] 1. The transmission / reception power in a satellite communication system is automatically switched to one that is suitable for the communication partner using one of the distance, direction and received power with the communication partner, or combination information. An automatic switching system for transmitting and receiving power levels of artificial satellites. 2. The apparent transmission / reception power level viewed from the other party of communication is controlled so that the reception level becomes a constant value in design, or the reception level calculation value calculated based on distance measurement and positioning information is matched. 2. The automatic transmission / reception power level switching system for an artificial satellite according to claim 1, wherein the apparent transmission / reception power level viewed from the communication partner is controlled as described above.