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The method of obtaining the rcs accuracy of the radar corner reflector

A reflector and radar angle technology, applied in the radar field, can solve the problems of difficult to characterize the geometric error of radar angle reflector, large error, inability to evaluate RCS accuracy, etc., to achieve practicality, avoid inefficient measurement, and avoid high dependence. Effect

Active Publication Date: 2017-11-17
ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

[0009] However, the geometric calculation method only measures the average error of size, curvature, and right angle, and it is difficult to characterize the overall geometric error of the radar corner reflector; the method of first calculating the independent RCS effect and then synthesizing it into the overall RCS error is affected by the coupling effect. The total RCS error of the radar corner reflector is large
In addition, this method can only evaluate the peak RCS accuracy of the radar corner reflector, and cannot evaluate the RCS accuracy at different radar wave incident angles

Method used

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  • The method of obtaining the rcs accuracy of the radar corner reflector
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  • The method of obtaining the rcs accuracy of the radar corner reflector

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Embodiment Construction

[0027] The present invention aims at the limitation of the RCS accuracy measurement method of the traditional radar corner reflector, adopts the three-dimensional measuring instrument to obtain the precise three-dimensional model of the radar corner reflector to be tested, then uses the RCS simulator to calculate the RCS of the three-dimensional model of the radar corner reflector to be tested, and finally Compared with the theoretical value of RCS, the degree of deviation between the actual RCS of the radar corner reflector and the theoretical value of RCS is measured.

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0029] In an exemplary embodiment of the present invention, a method for obtaining RCS accuracy of a radar corner reflector is provided. Such as figur...

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Abstract

The invention provides a method for obtaining RCS precision of a radar corner reflector. Aiming at the limitation of a conventional radar corner reflector RCS precision measuring method, the method comprises the steps of: utilizing a three-dimensional measuring instrument to obtain a precise three-dimensional model of the radar corner reflector to be detected; then utilizing an RCS emulator to calculates a RCS of the three-dimensional model of the radar corner reflector to be detected; and finally comparing the RCS with an RCS theoretical value, and measuring the deviation degree of the practical RCS of the radar corner reflector to the RCS theoretical value. According to the invention, the method is better than a radar direct measuring method and a geometric calculation method in flexibility and precision, the cost is not increased too much, and the popularization and application value is relatively good.

Description

technical field [0001] The invention relates to the technical field of radar, in particular to a method for obtaining RCS accuracy of a radar corner reflector. Background technique [0002] With the development of high-resolution microwave remote sensing imaging technology and the increasing demand for all-weather and all-weather quantitative remote sensing applications, the importance of on-orbit high-precision calibration of microwave remote sensing imaging payloads and continuous dynamic evaluation of payload performance in the field has become increasingly prominent. In the process of on-orbit radiation calibration of microwave remote sensing imaging payloads, radar corner reflectors are usually used as reference standard targets, that is: firstly, radar corner reflectors are arranged in the test field to obtain microwave images of radar corner reflectors; The proportional relationship between the radar cross-section value (RCS value) and the microwave image digital valu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/28
CPCG01B11/28
Inventor 李传荣周勇胜杨震胡坚马灵玲
Owner ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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