Method of realizing in-orbit independent restoration of single TT&C transponder by utilizing AGC value

Abstract

The invention discloses a method of realizing in-orbit independent restoration of a single TT&C transponder by utilizing an AGC value, aiming at solving the problem of upstream locking abnormity or abnormal conditions of downstream remote signals when a satellite is running in orbit, so that the spread spectrum transponder can restore normal work independently. According to the method, under the condition without transponder backup equipment comparing, the crucial telemetering values of the spread spectrum transponder including state parameters such as an AGC voltage value, an upstream remote control bit synchronization locking instruction and an upstream measuring frame locking instruction are judged and read by adopting lower computer software, and performing restoration on a base band under the condition of meeting preset independent restoration conditions, so that the problem of upstream lock losing or abnormity of downstream telemetered signals caused by spatial environment is solved, and the independent restoration of in-orbit abnormal conditions of the satellite spread spectrum transponder is realized. According to the method, the operation interference of a ground station is reduced, and the satellite is guaranteed to independently reset only once in a measurement and control area, so that the in-orbit single particle resistant property of the spread spectrum transponder is effectively improved.

Description

technical field [0001] The invention relates to an on-orbit autonomous recovery method of a satellite spread spectrum transponder, in particular to a method for realizing the on-orbit autonomous recovery of a single measurement and control transponder by using an AGC value, and belongs to the field of satellite measurement and control. Background technique [0002] At present, large-scale integrated circuits (such as FPGA and DSP) are increasingly widely used in satellite spread spectrum transponders, which play a key role in reducing power consumption, volume, and weight of the entire satellite. But at the same time, due to the harsh environment of the satellite working space, the above-mentioned devices are subject to a large number of high-energy particles and space radiation, and are prone to single-event effects, which leads to abnormal locking of uplink remote control or downlink telemetry signals of spread spectrum transponders in orbit. When the satellite measurement...

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Problems solved by technology

But at the same time, due to the harsh environment of the satellite working space, the above-mentioned devices are subject to a large number of high-energy particles and space radiation, and are prone to single-event effects, which leads to the problem of abnormal locking of uplink remote control or downlink telemetry signals of spread spectrum transponders in orbit.

When the satellite measurement and control subsystem only uses a single spread-spectrum transponder, the above-mentioned abnormal problems often lead to the interruption of the measurement and control channel, the only lifeline maintaining the connection between the sky and the earth, which will seriously affect the stable operation of the satellite in orbit, and even cause the entire satellite to fail. uncontrollable and totally ineffective

[0003] In order to ensure the reliable operation of the transponder, at present, the method of adding another transponder as a backup is generally adopted on the satellite to resist the influence of the single event effect. It is necessary to send a reset command through the ground to quickly return to normal, which will introduce unnecessary troubles to the ground monitoring and control station during the long-term management of the satellite

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