Discovery and evaluation method and module of spread spectrum transponder performance change on orbit satellite

A spread-spectrum transponder, transponder technology, applied in satellite radio beacon positioning systems, instruments, measuring devices and other directions

Active Publication Date: 2020-10-30
BEIJING INST OF SPACECRAFT SYST ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for electronic equipment such as spread spectrum transponders, it is inappropriate to use abnormal conditions to evaluate the performance of transponders.

Method used

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  • Discovery and evaluation method and module of spread spectrum transponder performance change on orbit satellite
  • Discovery and evaluation method and module of spread spectrum transponder performance change on orbit satellite
  • Discovery and evaluation method and module of spread spectrum transponder performance change on orbit satellite

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Embodiment Construction

[0036] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0037] Aiming at the difficult problem that the receiver performance degradation of the on-orbit satellite spread spectrum transponder cannot be detected intuitively in time, the present invention provides a method for discovering and evaluating the performance change of the on-orbit satellite spread spectrum transponder. It is of great significance to detect and deal with the decline in time.

[0038] There are very few parameters that can reflect the state of the spread spectrum transponder, and the AGC (Automatic Gain Control) level is one of them, which can directly and comprehensively characterize whether the transponder receiver is working normally or not in real time. Whether it is a low-noise amplifier problem, a frequency mixing intermediate amplifier circuit, a local oscillator circuit, or an AGC circuit problem, the direct manifestation may be u...

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Abstract

The invention discloses a method and a module for discovering and evaluating performance changes of an orbit satellite spread spectrum transponder, performance change conditions of the orbit satellitespread spectrum transponder can be discovered, and segmentation evaluation of severity can be performed. The method comprises the following steps: aiming at a plurality of satellites satisfying that"orbit satellites equipped with two transponders with same spread spectrum system, and the two spread spectrum transponders receivers are both powered on", and extracting historical AGC level telemetric data of two spread spectrum transponders of each satellite; performing correlation coefficient calculation on two groups of AGC level telemetric data of each satellite to obtain a correlation coefficient; constructing an evaluation threshold value by utilizing the correlation coefficients of all satellites satisfying the conditions; and as for the orbit satellite i to be evaluated, determiningthe correlation coefficient [rho]i of the AGC level telemetric data of the two spread spectrum transponders of the satellite i, and comparing with the evaluation threshold value to obtain an evaluation result.

Description

technical field [0001] The invention relates to the technical field of performance evaluation of spread spectrum transponders, in particular to a method and module for discovering and evaluating performance changes of on-orbit satellite spread spectrum transponders. Background technique [0002] At present, most of my country's in-orbit satellite measurement and control systems use S-band spread-spectrum transponders. Spread-spectrum transponders are important equipment for uplink and downlink communications between satellites and the ground. On-orbit service life. The use of spread-spectrum transponders during the satellite’s in-orbit phase is only reflected in the tracking segment, including functions such as uplink command injection, downlink telemetry reception, and ranging. [0003] AGC level telemetry is an important parameter to reflect the working status of the uplink function of the transponder. Because the change of AGC level depends on whether it is in the tracki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/23
CPCG01S19/23
Inventor 刘洋王晓晨张芸香田华东戴雪扬谭博能丁洁
Owner BEIJING INST OF SPACECRAFT SYST ENG
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