Full polarized double base radar target dynamic echo simulation method

Abstract

The invention provides a full polarized double base radar target dynamic echo simulation method. The method comprises steps of firstly establishing a target coordinate system, an emission station rectangular coordinate system, a receiving station rectangular coordinate system and a polarized coordinate system; resolving observation angles including the pitching angle and the azimuth of an emission station and a receiving station in a target coordinate system through the position of the emission station, the position of the receiving station, the target position and target postures; resolving rotation angles, relative to polarization of the target coordinate system, of the polarization of the emission station and the receiving station by use of the target postures, the positions of the emission station and the receiving station and the angle of the sight; and finally, carrying out table lookup and interpolation through the observation angle to obtain a scattering matrix in the target coordinate system, and carrying out coordinate rotation by polarizing the rotation angle to obtain dynamic echoes of the double base receiving station. According to the invention, the method can be used for a radar digital simulation and semi-physical simulation system, research of scattering features of all kinds of target dynamic double bases, and evaluation for some specific target detection ability by the actual radar and the method is also suitable for a single base radar.

Description

technical field [0001] The invention relates to a dynamic echo simulation method of a full-polarization bistatic radar target, in particular to a method for obtaining the dynamic echo of an actual full-polarization bistatic radar observation target based on polarization theory and space coordinate transformation theory, which belongs to radar simulation technology field. Background technique [0002] The research on the polarization characteristics of monostatic radar targets has made great progress. It is an important means to study the polarization characteristics of targets through electromagnetic calculation and anechoic chamber measurement data. It is necessary to pay attention to the difference between the polarization coordinate system and the actual radar measurement. With the gradual development of bistatic radars and their practical application, the polarization characteristics of bistatic targets have also received attention. Due to the separation of the transcei...

AI Technical Summary

Problems solved by technology

Due to the separation of the transceiver and the separation of the bistatic radar, the polarization coordinate systems of the transmitting station and the receiving station are different. When considering the dynamic echo of the receiving station, the polarization modes of the transmitting station and the receiving station must be considered at the same time, especially when the two stations are far apart. When (above hundreds of kilometers), the existing coordinate transformation is also more complicated

Images