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Method and device for determining space-time reference through satellite-ground cooperation, equipment and storage medium

A space-time, reference technology, applied in the field of radio navigation, can solve the problem of inaccurate space-time reference

Pending Publication Date: 2020-12-29
TSINGHUA UNIV +1
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[0005] Based on this, it is necessary to provide a method, device, device, and storage medium for satellite-ground cooperative determination of space-time references for the inaccurate problem of space-time references determined based on navigation signals including navigation interference signals.

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  • Method and device for determining space-time reference through satellite-ground cooperation, equipment and storage medium
  • Method and device for determining space-time reference through satellite-ground cooperation, equipment and storage medium
  • Method and device for determining space-time reference through satellite-ground cooperation, equipment and storage medium

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[0069] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0070] Global Navigation Satellite System (English: Global Navigation Satellite System, abbreviation: GNSS) is playing an increasingly important role in people's daily activities. Every country is actively developing its own satellite communication system. At present, the development of a new generation of satellite communication systems is facing problems such as few orbital positions and limited available frequencies. On the one hand, medium-orbit communication satellites can overcome the problem of limited geosynchronous orbit positions, and on the other hand, they can...

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Abstract

The invention relates to a method and device for determining a space-time reference through satellite-ground cooperation, equipment and a storage medium, and relates to the technical field of radio navigation. The method comprises the following steps that an original navigation observed quantity is obtained according to a navigation signal emitted by a navigation satellite and received at the k epoch; the candidate state quantity of a target communication satellite in the k epoch is calculated according to the original navigation observed quantity; ephemeris parameters and almanac parameters sent by a ground computing center are received; a prediction position vector and a prediction speed vector of the target communication satellite in the k epoch are calculated according to the ephemeris parameter and the almanac parameter; and integrity monitoring is carried out, and the final state quantity of the target communication satellite in the k epoch is obtained based on the integrity monitoring result, the candidate state quantity, the prediction position vector and the prediction speed vector. The problem that in the prior art, due to the fact that a navigation signalcomprises a navigation interference signal, a space-time reference determined according to the navigation signal is inaccurate is solved.

Description

technical field [0001] The present invention relates to the technical field of radio navigation, in particular to a method, device, equipment and storage medium for satellite-terrestrial cooperative determination of a space-time reference. Background technique [0002] Global Navigation Satellite System (English: Global Navigation Satellite System; abbreviation: GNSS) is playing an increasingly important role in people's daily activities. The existing medium-orbit communication satellite systems mainly include the Iridium system, the Globalstar system, and the P-21 system of Inmarsat. The medium-orbit communication satellite mainly refers to the communication satellite whose satellite orbit is 2000-20000km away from the earth's surface, and it moves fast relative to the ground. [0003] In the related technology, the medium-orbit communication satellite can use the space-borne navigation receiver to receive the navigation signal transmitted by the navigation satellite to ob...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/20G01S19/25G01S19/29
CPCG01S19/20G01S19/256G01S19/258G01S19/29Y02D30/70
Inventor 陈曦魏齐辉张冠群詹亚锋匡麟玲
Owner TSINGHUA UNIV
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