Clock difference compensation method and system based on receiver in Beidou dynamic positioning

A compensation method and receiver technology, applied in satellite radio beacon positioning system, radio wave measurement system, measurement device, etc., can solve problems such as few researches

Inactive Publication Date: 2020-02-04
深圳微品致远信息科技有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, domestic research on dynamic positioning, especially multi-target dynamic positioning is very little.
At the same time, due to the clock difference in the receiver, the time corresponding to the observation data of the receiver is not the exact system time, but the time with clock difference

Method used

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  • Clock difference compensation method and system based on receiver in Beidou dynamic positioning

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Embodiment Construction

[0028] The preferred embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] like figure 1 As shown, this example provides a clock error compensation method based on the receiver in Beidou dynamic positioning, including:

[0030] Step S1, collecting carrier phase observation data, performing differential filtering on the carrier phase observation value, and obtaining its phase variability as the Doppler observation value at this moment;

[0031] Step S2, constructing an equation through the Doppler observation value and the geometric position relationship between the satellite and the receiver, and solving the receiver velocity;

[0032] Step S3, calculating the real-time displacement through the speed of the receiver, and obtaining the baseline error compensation correction number through the integration of the speed with respect to time;

[0033] Step S4, performing clock error compensation on the...

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Abstract

The invention provides a clock difference compensation method based on a receiver in Beidou dynamic positioning. The clock difference compensation method includes the steps that step S1, carrier phaseobservation data are collected, differential filtering is carried out on a carrier phase observation value, and a phase change rate of a carrier is calculated as a Doppler observation value at the time; step S2, an equation is constructed through the Doppler observation value and a geometric position relationship between a satellite and the receiver to solve the receiver speed; step S3, the real-time displacement is solved by the receiver speed, and a baseline error compensation correction number is calculated by integrating of the speed on the time; and step S4, a Doppler speed measurement result is subjected to clock difference compensation through the baseline error compensation correction number to obtain a baseline solution result after compensation. The clock difference is compensated by using the BDS Doppler speed measurement result so as to obtain a more accurate baseline solution result, so that application requirements such as highly dynamic and multi-complex mobile formations are met.

Description

technical field [0001] The invention relates to a clock error compensation method, in particular to a clock error compensation method based on a Beidou dynamic positioning receiver, and to a clock error compensation system using the clock error compensation method based on a Beidou dynamic positioning receiver. Background technique [0002] With the in-depth integration of Beidou Satellite System (BDS) positioning technology with various industries, the conventional static and dynamic real-time dynamic differential positioning (RTK) technology can no longer fully meet the application requirements, and the dynamic relative dynamics of both the mobile station and the reference station ( Motion) positioning technology came into being, and the dynamic positioning of linked targets refers to the state that multiple moving objects maintain relative motion at the same time in a system, that is, multi-target dynamic positioning. Especially in applications such as aircraft, vehicle a...

Claims

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Application Information

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IPC IPC(8): G01S19/23
CPCG01S19/23
Inventor 周洪峰孙红星李石平
Owner 深圳微品致远信息科技有限公司
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