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Positioning method and positioning system based on low-orbit satellite constellation

A low-orbit satellite and positioning method technology, applied in the field of satellite positioning, can solve the problems of high cost and achieve the effect of reducing cost, reducing the number of satellites, and reducing cost

Pending Publication Date: 2022-05-17
BEIJING GUODIAN GAOKE TECH CO LTD
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Problems solved by technology

[0004] In order to solve the problem that the cost of the satellite positioning system remains high when using pseudo-positioning technology, this application provides a positioning method and positioning system based on low-orbit satellite constellations

Method used

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  • Positioning method and positioning system based on low-orbit satellite constellation
  • Positioning method and positioning system based on low-orbit satellite constellation

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Embodiment Construction

[0041] In order to make the purpose of the present application, the technical solution and the advantages more clearly understood, the following through the drawings and embodiments, the present application will be further detailed in detail. It should be understood that the specific embodiments described herein are only used to interpret the present application and are not used to limit the present application.

[0042] Embodiments of the present application disclose a positioning method based on a low-orbit satellite constellation.

[0043] Reference Figure 1 , the positioning method includes:

[0044] 101, control the ground station to generate and regularly transmit satellite orbit determination signals.

[0045] Among them, the positioning method is applied to the positioning system based on the low orbit satellite constellation, the positioning system includes the ground station, the low orbit satellite constellation and the ground receiver, the low orbit satellite constell...

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Abstract

The invention discloses a positioning method and a positioning system based on a low-orbit satellite constellation. The positioning method comprises the following steps: controlling a ground station to generate and regularly transmit a satellite orbit determination signal; performing orbit and time calibration on each low-orbit satellite in the low-orbit satellite constellation according to the satellite orbit determination signal; controlling all low-orbit satellites to generate and transmit satellite positioning signals at regular time; and when the ground receiver receives a satellite positioning signal of a single low-orbit satellite, positioning calculation is carried out on the satellite positioning signal according to a Doppler technology to obtain positioning position information. The low-orbit satellite constellation positioning mode can obviously reduce the manufacturing cost of the positioning system.

Description

Technical field [0001] The present application relates to the field of satellite positioning technology, in particular to a positioning method and positioning system based on a low-orbit satellite constellation. Background [0002] Modern people are familiar with the positioning system for GPS, Beidou and other positioning systems, these two systems use pseudo-distance positioning technology. In principle, the ground receiver first obtains the precise orbit of the satellite by receiving the navigation message of the satellite, and at the same time receives the carrier wave of multiple satellites with pseudo-code information, which can obtain the pseudo-distance between the receiver and the satellite (due to the clock difference between the ground and the satellite), and then the position of the receiver can be calculated, and the positioning accuracy of these two systems can reach 10 meters. [0003] However, the construction cost of satellites using pseudo-distance positioning ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/37G01S19/42G01S19/23
CPCG01S19/37G01S19/42G01S19/235
Inventor 吕强宋博王捷刘雪强李瑞凯杨立业李阳郭云龙刘金全许建辉
Owner BEIJING GUODIAN GAOKE TECH CO LTD
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