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Method and device for measuring time deviation of forwarding orbit measurement system

A system time and deviation measurement technology, applied in the field of satellite orbit measurement, can solve problems such as difficulty in meeting accuracy requirements, orbit deviation, and time deviation of repeater orbit measurement systems.

Active Publication Date: 2015-12-02
中国科学院国家天文台长春人造卫星观测站
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Problems solved by technology

If this delay is not measured, the pseudorange directly measured by the modem cannot be accurately corrected. Then, the orbit determined by the precise orbit determination of the satellite using the pseudorange directly measured by the modem will produce deviations, thereby affecting its technology application
[0003] At present, there is no method of directly measuring the time deviation of the repeating orbit measurement system. At present, the modem uses the estimated value of the modulation time of the modem in the modem manufacturer's manual to correct the distance of the star station. Due to the influence of the environment, etc., different The time deviation of the repeating orbit measurement system is different at different times or in different environments, so the current method is difficult to meet the accuracy requirements in the actual satellite precision orbit application

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  • Method and device for measuring time deviation of forwarding orbit measurement system
  • Method and device for measuring time deviation of forwarding orbit measurement system
  • Method and device for measuring time deviation of forwarding orbit measurement system

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Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0044] see figure 1 , figure 1 A schematic structural diagram of the orbit measurement system provided by the embodiment of the present application;

[0045] figure 1 The orbit measurement system shown includes transponders and satellite corner reflectors installed on satellites, as well as transponder orbit measurement systems and satellite laser ranging systems installed on the ground; the current Beidou navigation satellites carry both transponders and Satell...

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Abstract

The embodiment of the invention discloses a method and system for measuring time deviation of a forwarding type track measuring system. A synchronous observing method of a satellite laser range measurement system and the forwarding type track measuring system is adopted to achieve real-time measurement of the time deviation of the forwarding type track measuring system, and therefore accuracy of star station range measurement of the forwarding type track measuring system is improved. In addition, the method and system are easy to achieve and low in achieving cost.

Description

technical field [0001] The invention relates to the technical field of satellite orbit measurement, in particular to a method and device for measuring time deviation of a forwarding orbit measurement system. Background technique [0002] The retransmission orbit measurement system measures the distance between the satellite and the ground observation station (hereinafter referred to as the distance between the satellite stations) by measuring the time-frequency signal transmitted back and forth between the satellite and the ground observation station (ie, the retransmission orbit measurement system). , and then use multi-station interactive measurement to realize the system for determining the satellite orbit. In order to realize the transmission of time-frequency signals between satellite stations, the repeating orbit measurement system adopts microwave communication technology. First, the time-frequency signal (usually a second pulse signal) is modulated by a modem to gene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/00H04B7/185H04B17/40
Inventor 张子昂韩兴伟范存波董雪宋清丽粱志鹏张海涛刘承志
Owner 中国科学院国家天文台长春人造卫星观测站
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