Method using point targets to carry out onboard RCS measurement calibration

Abstract

The invention relates to a method using point targets to carry out onboard RCS measurement calibration. The method comprises the steps that onboard RCS measurement is carried out on a number of calibration bodies according to a first air line, so as to acquire the echo data of the calibration bodies; onboard RCS measurement is carried out on a target body to be measured according to a second air line, so as to acquire the echo data of the target body to be measured; and according to the echo data of the calibration bodies, the theory RCS value of the calibration bodies and the echo data of the target body to be measured, the RCS value of the target body to be measured is determined. A number of point targets are used to carry out onboard RCS measurement calibration. The onboard RCS measurement calibration method is simplified. The measurement cost is reduced. The calibration accuracy and the measurement efficiency of RCS measurement calibration are improved.

Description

technical field [0001] The invention belongs to the technical field of signal feature control, and in particular relates to a method for performing airborne RCS measurement and calibration by using a point target. Background technique [0002] The technical background related to the present invention will be described below, but these descriptions do not necessarily constitute the prior art of the present invention. [0003] In recent years, since the airborne measurement system can obtain the data of the measured target in different azimuths and under the condition of large grazing angle, it has attracted more and more attention. The measurement system will play an increasingly prominent role in future wars. [0004] Calibration is an essential step in the measurement of airborne RCS (RadarCrossSection, radar cross section). Only through calibration can the precise relationship between the measurement data and the RCS of the measured target be established. Radar system ca...

AI Technical Summary

Problems solved by technology

Calibration using distributed targets requires relatively stable distributed targets in a large uniform area with fully known scattering characteristics, such as the Amazon rainforest and large uniform deserts. In practice, it is difficult to find such distributed targets, which leads to the difficulty of airborne RCS measurement calibration. Poor calibration accuracy and low measurement efficiency

[0005] Therefore, there is a need in the prior art for a solution that can solve the problems of poor calibration accuracy and low measurement efficiency of airborne RCS measurement calibration due to the difficulty in finding distributed targets in a large uniform area with relatively stable and fully known scattering characteristics. Program

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