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Low-orbit satellite real-time precision orbit determination method and system based on Beidou short messages

A Beidou short message, low-orbit satellite technology, applied in the field of real-time precise orbit determination methods and systems for low-orbit satellites, can solve the problems of poor safety, high cost, limited accuracy of basic navigation services, etc. A wide range of effects

Pending Publication Date: 2021-02-26
WUHAN UNIV
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Problems solved by technology

[0005] By providing a method and system for real-time precise orbit determination of low-orbit satellites based on Beidou short messages, the present invention solves the problem of limited accuracy of basic navigation services of GNSS systems in the prior art, small coverage of communication links, high cost and high security. poor problem

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  • Low-orbit satellite real-time precision orbit determination method and system based on Beidou short messages
  • Low-orbit satellite real-time precision orbit determination method and system based on Beidou short messages
  • Low-orbit satellite real-time precision orbit determination method and system based on Beidou short messages

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Embodiment Construction

[0049] With the continuous construction of my country's Beidou-3 system, the three GEO satellites of the Beidou-3 system can provide regional short message communication services in the Asia-Pacific region, and MEO satellites can expand the scope of short message services to the whole world. In order to solve the problem that the existing GNSS system basic navigation service accuracy is limited, and the general communication link has disadvantages such as small coverage, high cost, poor security, etc., the invention discloses a low-orbit low-orbit system based on Beidou global short message Satellite real-time precision orbit determination method and system. The present invention utilizes the global short message communication function of my country's Beidou No. 3 system to broadcast real-time high-precision satellite orbit, clock error and other correction information to realize real-time precise orbit determination of low-orbit satellites around the world. At the same time, ...

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Abstract

The invention belongs to the technical field of communication and positioning, and discloses a low-orbit satellite real-time precision orbit determination method and system, and the method comprises the steps that a ground monitoring station obtains the basic navigation positioning information of the ground monitoring station through collecting the basic navigation positioning information of a satellite navigation system, and transmits the basic navigation positioning information to a ground master control station; the ground master control station generates satellite navigation system differential correction information according to the physical position information of the ground master control station and the basic navigation positioning information of the ground monitoring station, andsends the satellite navigation system differential correction information to an uplink injection station; the uplink injection station sends the differential correction information of the satellite navigation system to a Beidou-3 satellite; the Beidou-3 satellite broadcasts satellite navigation system differential correction information by using a short message communication function; and after receiving the satellite navigation system differential correction information, the low-orbit satellite performs real-time precise orbit determination in combination with the low-orbit satellite basic navigation positioning information received by the satellite-borne receiver of the low-orbit satellite. The method and the system have the advantages that the method and the system do not depend on an external communication link, are completely independent and are high in safety and cost performance.

Description

technical field [0001] The invention relates to the technical field of communication and positioning, in particular to a method and system for real-time precise orbit determination of low-orbit satellites based on Beidou short messages. Background technique [0002] In the past few decades, low-orbit satellites and their constellations have been widely used in the fields of resource remote sensing, atmospheric detection, ocean development, military reconnaissance, etc. , social development and national security have an irreplaceable role. In recent years, with the sharp increase in demand for global communications and scientific research, many low-orbit constellation projects have sprung up, such as Oneweb, Iridium, and SpaceX in the United States, Hongyan, Hongyun, and CentiSpace in China, and South Korea’s Samsung and others. Therefore, it is necessary to study the real-time precise orbit determination of low-orbit satellites around the world. [0003] Spaceborne GNSS t...

Claims

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Application Information

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IPC IPC(8): G01S19/41G01S19/07G01S19/08G01S19/25G01S19/29H04W4/14H04B7/185
CPCG01S19/41G01S19/071G01S19/08G01S19/256G01S19/258G01S19/29H04W4/14H04B7/1851
Inventor 李文文李敏郑佳伟方荣新赵齐乐
Owner WUHAN UNIV
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