Non-navigation GEO satellite forwarding type orbit determination method based on low orbit satellite assistance

A low-orbit satellite and forwarding technology, applied in the field of satellite orbit determination, can solve the problems of the influence of GEO satellite orbit determination accuracy, fixed satellite-ground geometric configuration, and small geometric configuration changes, so as to improve the geometric factor of orbit measurement and improve Effect of Orbit Accuracy

Pending Publication Date: 2022-08-02
NAT TIME SERVICE CENT CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The high-orbit and geostationary characteristics of GEO satellites have two sides. The advantage is that the ground covers a wide range, so it is widely used in communication, meteorology, navigation and positioning, and data relay. The defect is the geometric configuration of the satellite and the ground station Fixed, and when the distribution of observation stations is limited by geographical conditions, the orbit determination accuracy of GEO satellites is not ideal
[0003] The existing technology uses high-precision repeating GEO satellite orbit determination technology to realize satellite orbit determination, but the distribution of repeating ground stations in this technology is limited, and the geometric configuration between the ground station and the GEO satellite has little change. This static pseudo-range observation method The dynamic constraints on GEO satellites are weak, so it has a great impact on the orbit determination accuracy of GEO satellites

Method used

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  • Non-navigation GEO satellite forwarding type orbit determination method based on low orbit satellite assistance
  • Non-navigation GEO satellite forwarding type orbit determination method based on low orbit satellite assistance
  • Non-navigation GEO satellite forwarding type orbit determination method based on low orbit satellite assistance

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Embodiment 1

[0063] like figure 1 As shown, a non-navigation GEO satellite transponder orbit determination method based on low-orbit satellite assistance provided by the present invention includes:

[0064] S1, according to the multiple first observation data received by the corresponding ground station after the signal is forwarded by the GEO satellite to be orbited, calculate the multiple pseudoranges from the multiple ground stations to the GEO satellite to be orbited;

[0065] In this step, a plurality of first observation data can be analyzed to obtain the sending time and receiving time of each ground station signal; according to the sending time and receiving time obtained by analyzing the first observation data of each ground station, the Pseudoranges for pending orbit GEO satellites.

[0066] It is worth noting that the ground station transmits an uplink signal to the GEO satellite to be orbited, the signal is forwarded to a downlink signal by the transponder carried by the GEO s...

Embodiment 2

[0109] A non-navigation GEO satellite relaying orbit determination system based on low-orbit satellite assistance provided by the present invention includes: a motion observation station and a ground station, and the ground station is used for:

[0110] Calculate multiple pseudoranges from multiple ground stations to GEO satellites to be orbited according to multiple first observation data received by the corresponding ground stations after the signals are forwarded by the GEO satellites to be orbited;

[0111] Determine the target low-orbit satellite as the motion observation station, and obtain the orbit information of the motion observation station;

[0112] The ground station receives the second observation data obtained by observing the GEO satellite data of the pending orbit sent by the motion observation station;

[0113] Wherein, the target low-orbit satellite is provided with a repeater receiver;

[0114] According to the first observation data and the second observa...

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Abstract

According to the non-navigation GEO satellite forwarding type orbit determination method based on low orbit satellite assistance provided by the invention, the time delay of a downlink signal forwarded by a GEO satellite to a ground station and the low orbit satellite is measured by carrying a forwarding type receiver on the low orbit satellite, a ground forwarding type orbit determination network is assisted to carry out precise orbit determination on the GEO satellite, and the orbit determination precision is improved. Compared with the prior art, an uplink signal of the ground station is forwarded by the repeater carried by the GEO satellite, one path is received by the ground station, the other path is received by the low-orbit satellite serving as the motion observation station, and the GEO satellite does not need to carry an atomic clock; according to the method, the relative motion of the GEO satellite and the motion observation station can be artificially created, the orbit measurement geometric factors of the GEO are improved, the motion observation station assists the ground forwarding type orbit measurement network to carry out combined orbit determination, and the orbit determination precision is improved.

Description

technical field [0001] The invention belongs to the technical field of satellite orbit determination, in particular to a non-navigation GEO satellite transponder orbit determination method based on low-orbit satellite assistance. Background technique [0002] The high-orbit and static-earth characteristics of GEO satellites have two sides. The advantage is that they have a wide ground coverage, so they are widely used in communications, meteorology, navigation and positioning, and data relay. Fixed, and when the distribution of observation stations is limited by geographical conditions, the orbit determination accuracy of GEO satellites is not ideal. [0003] The existing technology uses high-precision repeater GEO satellite orbit determination technology to achieve satellite orbit determination. However, in this technology, the distribution of repeater ground stations is limited, and the geometrical changes between ground stations and GEO satellites are small. This static p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/02G01S19/42G01C21/24G01C21/02G06F17/12G06F17/16
CPCG01S5/02G01S19/42G01C21/24G01C21/02G06F17/12G06F17/16Y02A90/10
Inventor 杨旭海南凯王源昕雷辉曹芬刘佳马浪明李志刚李伟超成璇陈亮王伟王霄
Owner NAT TIME SERVICE CENT CHINESE ACAD OF SCI
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