Low-orbit constellation system phase keeping method, system and device and storage medium

A low-orbit constellation and system phase technology, applied in the field of satellite control, can solve problems that do not meet the high-precision phase maintenance requirements of the low-orbit constellation system

Active Publication Date: 2020-08-28
航天科工空间工程发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, whether the above-mentioned low-orbit constellation phase-keeping strategy adopts the passive control of atmospheric resistance or the active control of thrust

Method used

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  • Low-orbit constellation system phase keeping method, system and device and storage medium
  • Low-orbit constellation system phase keeping method, system and device and storage medium
  • Low-orbit constellation system phase keeping method, system and device and storage medium

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Embodiment 1

[0100] This embodiment provides a high-precision phase-holding method for a low-orbit constellation system. The method has low requirements on the accuracy of satellite position and velocity determination, and the positioning accuracy of a typical GPS can meet the requirements; and it does not need to determine the satellite position. 1. For high-frequency sampling of velocity data, only the position and velocity data at a certain time interval are required as the input of the phase hold, such as the position and velocity data every other day. For each satellite in the constellation, the phase maintenance strategy is the same, only the reference phase is different. Through the control strategy of this patent, the actual flat phase angle of each satellite can track its reference flat phase angle. Since the phase maintenance strategy of each satellite is the same, the subsequent description will not be carried out for the constellation, but directly for the satellite. In additio...

Embodiment 2

[0141] In this embodiment, a high-precision phase-holding method for a low-orbit constellation system proposed by this scheme is further described based on simulation experiments.

[0142] First analyze the selection of orbital elements, figure 2 is the time history of the flat phase angle deviation without control, where, figure 2 -a is a schematic diagram of the simulation time of 10 days; figure 2 -b is 10 orbital periods in the simulation time. The average orbit element in the figure refers to the short-period item caused by the earth's non-spherical perturbation J2 on the basis of the instantaneous orbit element, through the analytical method.

[0143] It can be seen that the oscillation amplitude of the instantaneous orbital elements with flat phase angle deviation is about ±0.05°, and the corresponding oscillation period is about 0.5 orbital period; the oscillation amplitude of the instantaneous orbital value with flat phase angle deviation is about ±0.05°, corresp...

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Abstract

The invention discloses a low-orbit constellation system phase keeping method, system and equipment and a storage medium, wherein the method comprises the steps: determining the deviation between an actual semi-major axis and a reference semi-major axis of a satellite and the variation of the deviation along with time according to a reference flat phase angle and an actual flat phase angle of thesatellite; according to the deviation between the actual semi-major axis and the reference semi-major axis of the satellite and the variation of the deviation along with time, determining the orbit maneuvering time and the variation of the semi-major axis of the satellite; and adjusting the phase of the low-orbit constellation system in a satellite phase keeping task period by utilizing the satellite orbit maneuvering time and the semi-major axis variation. The technical scheme provided by the invention can be used for realizing high-precision phase retention of the low-orbit constellation system; under the conditions that the satellite position and speed determination precision is not high and the positioning data sampling rate is low, high-precision phase keeping (the precision requirement such as +/- 0.1 degree) can be achieved, and the requirements of high-precision phase keeping for satellite orbit determination precision and orbit determination data sampling storage are lowered.

Description

technical field [0001] The invention relates to the field of satellite control. More specifically, it relates to a high-precision phase keeping method, system, device and storage medium for low-orbit constellation systems. Background technique [0002] In recent years, many countries are accelerating the development and deployment of large-scale low-orbit constellation systems. With the deployment and operation of large-scale low-orbit constellations, the constellation system will face the threat of collisions between satellites within the system and between satellites within the system and space debris. Due to the influence of space perturbations such as atmospheric resistance, the phase of the satellite will have a long-term change relative to the reference phase, which will affect the space orbit security. In order to make the low-orbit constellation meet the space orbit security requirements, the satellite phase of the low-orbit constellation needs to be kept at Within...

Claims

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Application Information

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IPC IPC(8): B64G1/24
CPCB64G1/242
Inventor 赵书阁张楠贺泉刘奇刘晨向开恒
Owner 航天科工空间工程发展有限公司
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