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

A low-orbit constellation, system phase technology, applied in the field of satellite control, can solve the problem of not meeting the high-precision phase retention requirements of the low-orbit constellation system, and achieve the effect of reducing storage requirements

Active Publication Date: 2021-12-07
航天科工空间工程发展有限公司
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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, the position-keeping accuracy level exceeds ±1°, which does not meet the high-precision phase-keeping requirements of the low-orbit constellation system ( e.g. ±0.1°)

Method used

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

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Embodiment 1

[0101] 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

[0142] 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.

[0143] 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 orbital 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 orbital element, through analytical methods.

[0144] 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°, corres...

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Abstract

The invention discloses a low-orbit constellation system phase maintenance method, system, equipment and storage medium, wherein the steps of the method include: determining the actual semi-major axis and the reference phase angle of the satellite according to the reference flat phase angle and the actual flat phase angle of the satellite. The deviation of the semi-major axis and the variation of the deviation with time; according to the deviation of the actual semi-major axis of the satellite and the reference semi-major axis and the variation of the deviation with time, determine the satellite orbit maneuver time and the change of the semi-major axis; use the satellite orbit maneuver Time and semi-major axis change amount, adjust the phase of the low-orbit constellation system during the satellite phase maintenance mission period. The technical solution described in this application can be used to realize high-precision phase maintenance of the low-orbit constellation system, and can realize high-precision phase maintenance (accuracy requirements such as ± 0.1°), which reduces the requirements of high-precision phase keeping on satellite orbit determination accuracy and orbit determination data sampling and storage.

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 in the system and between satellites in 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 security of the space orbit. Within a certain small interval (for example, within ±0.1° of the reference phase). In addition, the coverage constraints of low-orbit constellations also require the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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