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Ultra-low orbit satellite orbit autonomous maintenance method

An orbit satellite, ultra-low technology, applied in the aerospace field, can solve the problem of low orbit maintenance accuracy, and achieve the effect of meeting the long-term high-precision maintenance requirements

Active Publication Date: 2020-11-24
INNOVATION ACAD FOR MICROSATELLITES OF CAS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for maintaining the orbit of an ultra-low orbit satellite autonomously, so as to solve the problem that the orbit maintenance accuracy of the existing ultra-low orbit satellite is relatively low

Method used

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  • Ultra-low orbit satellite orbit autonomous maintenance method
  • Ultra-low orbit satellite orbit autonomous maintenance method
  • Ultra-low orbit satellite orbit autonomous maintenance method

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Embodiment 1

[0073] This embodiment provides a method for autonomously maintaining the orbit of an ultra-low orbit satellite, such as figure 1 As shown, the method for autonomously maintaining the ultra-low orbit satellite orbit includes: Step 1, setting the working orbit range of the ultra-low orbit satellite, and estimating the magnitude of atmospheric resistance; Step 2: analyzing the inertial acceleration according to the magnitude of the atmospheric resistance Measure the magnitude of the noise of the system, and obtain the noise analysis result of the inertial acceleration measurement system; Step 3: according to the noise analysis result of the inertial acceleration measurement system, set the parameters of the low-thrust execution system, and perform an analysis on the inertial acceleration measurement system and the The low-thrust actuation system is calibrated on-orbit to obtain a calibrated inertial acceleration output result; and step 4: according to the calibrated inertial acce...

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Abstract

An ultra-low orbit satellite orbit autonomous maintenance method is provided. The method comprises: 1, setting the working orbit range of a satellite, and estimating the magnitude of atmospheric resistance; 2, analyzing the magnitude of the noise of the inertial acceleration measurement system according to the magnitude of the atmospheric resistance to obtain a noise analysis result of the inertial acceleration measurement system; 3, setting parameters of a small-thrust execution system according to the noise analysis result of the inertial acceleration measurement system, and performing on-orbit calibration on the inertial acceleration measurement system and the small-thrust execution system to obtain a calibrated inertial acceleration output result; and 4, setting an orbit control smallthrust output algorithm of the small thrust execution system according to the calibrated inertial acceleration output result.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to a method for autonomously maintaining the orbit of an ultra-low orbit satellite. Background technique [0002] Ultra-low orbit refers to an orbit that flies outside the atmosphere but is lower than the orbital altitude of ordinary spacecraft. It usually refers to a flight orbit with an orbital altitude above 120km and below 300km. Ultra-low orbit has great military and scientific significance, but due to the low altitude of the orbit, when flying in ultra-low orbit, atmospheric drag has a significant impact on the orbit. If the orbit is not maintained, the satellite orbit will rapidly decay. [0003] With the continuous development of modern satellite technology, ultra-low-orbit satellites operate at 200-300km for a long time. In this area, although the atmosphere density is relatively high, the aircraft can offset the perturbation and attenuation effect of atmospheric resista...

Claims

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Application Information

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IPC IPC(8): B64G1/24G01C21/24
CPCB64G1/24B64G1/244G01C21/24B64G1/245
Inventor 刘国华程蛟姚小松戴正升祁海铭田龙飞范城城
Owner INNOVATION ACAD FOR MICROSATELLITES OF CAS
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