High-precision distance calibration method for measurement and control system

A measurement and control system and high-precision technology, applied in the field of aerospace measurement and control, can solve problems such as large errors in the distance zero value system, and achieve the effects of improving the system distance zero value accuracy, realizing real-time correction, and eliminating delay changes.

Pending Publication Date: 2022-02-08
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

[0003] In order to solve the problem of large error in the distance zero value system of the existing measurement and control system equipment, the present invention provides a high-precision distance calibration method for the measurement and control system

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  • High-precision distance calibration method for measurement and control system

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with accompanying drawing.

[0041] A high-precision distance calibration method for measurement and control systems, the principle is as follows figure 1 As shown, it specifically includes the following steps:

[0042] (1) In the preparation stage of the measurement and control task, the zero value calibration of the system equipment is carried out. The UAV is equipped with calibration equipment, and the hovering position meets the requirements of far-field calibration; a total station is set up within a certain range from the UAV, and a control network coordinate system is established; the calibration of the UAV antenna is completed through the laser measurement of the total station Phase center position calibration; the ground measurement and control station and the UAV form a wireless closed loop, complete the system distance zero value calibration, and separate the measurement and control station...

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Abstract

The invention discloses a high-precision distance calibration method for a measurement and control system, and relates to the technical field of spaceflight measurement and control. According to the method, firstly, a mode based on combination of the unmanned aerial vehicle and laser measurement is adopted, high-precision coordinate calibration of the phase center of an unmanned aerial vehicle calibration antenna is completed through a total station, and the unmanned aerial vehicle and a measurement and control station are combined in a wireless closed-loop mode to complete zero calibration of the measurement and control station distance. Real-time correction of the distance zero value variation of the measurement and control station is realized in a mode that an offset antenna wireless closed loop and a task loop work simultaneously, and finally, the function of high-precision distance measurement of the system is completed. The method can effectively eliminate the time delay change of link equipment along with the time, and achieves the centimeter-level high-precision calibration effect of the system distance from the zero value.

Description

technical field [0001] The invention relates to the field of aerospace measurement and control, in particular to a high-precision distance calibration method for a measurement and control system. Background technique [0002] In the field of aerospace measurement and control, in order to further improve the accuracy of satellite orbit determination, it is necessary to perform high-precision calibration of the distance zero value of the equipment of the measurement and control system. At present, the distance calibration accuracy of the traditional measurement and control system is only at the meter level, which cannot meet the centimeter-level high-precision ranging requirements. At the same time, the current construction of measurement and control stations usually does not have the conditions for the construction of calibration towers, and far-field calibration cannot be realized. When using near-field calibration methods, distance calibration errors caused by multipath eff...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/03G01S11/02
CPCG01B11/03G01S11/02
Inventor 邢翠柳段旭成亚勇赵大恒
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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