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A method and device for calibrating radar cross section rcs

A technology of radar cross section and radar reflector, applied in radio wave measurement systems, instruments, etc., can solve the problem of destroying the characteristics of calibration objects

Active Publication Date: 2021-07-06
NO 63921 UNIT OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if a conventional satellite platform is added due to the needs of operation and control, the original target characteristics of the calibration body will be destroyed, and the traditional RCS calibration method is no longer applicable

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  • A method and device for calibrating radar cross section rcs
  • A method and device for calibrating radar cross section rcs
  • A method and device for calibrating radar cross section rcs

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Embodiment Construction

[0027] The invention mainly overcomes the problem that after the calibration body is loaded on the satellite platform, it provides a scheme for carrying out radar RCS calibration by using satellites with incomplete regular shapes. Specifically, the technical solution adopted in the present invention involves establishing an accurate correspondence between the signal form, the target attitude and the RCS of the calibration body through pre-ground precision calibration, and overcoming the impact of the satellite platform destroying the reflection characteristics of the calibration body. During radar calibration, the RCS of the calibration body is no longer a constant value, but a variable that changes with the attitude. Using the corresponding relationship between the target attitude and RCS, the precise RCS of the target is determined to complete the calibration. Embodiments of the present invention will be specifically described below in conjunction with the accompanying drawin...

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Abstract

The present invention provides a method and device for calibrating radar cross section RCS, wherein the method includes: performing RCS measurement on a satellite to form an RCS two-dimensional data table, wherein the satellite has an incompletely regular shape, the incompletely regular The shape of the radar is formed by adding a radar reflector load with a regular geometric shape to the satellite platform, and using the radar equation and combining the two-dimensional data table of the RCS to calibrate the K value measured by the RCS. The technical solution of the invention can provide space-based RCS calibration benchmarks for ground multi-band pulse radars, and has significant economic effects compared with traditional ball-dropping calibration methods.

Description

technical field [0001] The invention generally relates to the field of radar measurement technology. More specifically, the present invention relates to radar cross section ("Radar Cross Section", RCS) calibration and system error calibration techniques. Background technique [0002] Target RCS reflects the target's ability to scatter electromagnetic waves irradiated by radar, and is an important parameter of target characteristics. The target RCS is measured by the ground reflective radar, and the accuracy of the measurement results is closely related to the calibration accuracy of the radar equipment. The target RCS measurement is a process of converting the echo power of the radar receiver by using the radar equation. It is usually divided into absolute calibration method and relative calibration method. At present, the relative calibration method is generally used. The basic process is to establish the relationship between the echo power of the target to be measured an...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/40G01S7/41
CPCG01S7/40G01S7/41
Inventor 杨萍慈颖陈浩党宏杰邓洛凤
Owner NO 63921 UNIT OF PLA