空间进动目标宽带极化相关特性研究

摘要

针对空间进动目标的宽带极化相关特性,首先给出了其定义及其物理意义；然后基于一种空间进动目标动态全极化回波仿真方法得到了典型战情下的雷达回波,接着以4类典型目标为对象分析了空间进动目标的宽带极化相关特性,并进一步分析了分时极化测量条件下空间进动目标测量的雷达脉冲重复间隔(PRI)选择问题。研究表明,对典型参数情况,分时极化测量雷达对空间进动目标进行宽带极化散射特性测量时,PRI 为10 ms 可满足测量需要,但实际观测场景较仿真场景更为恶劣,因此需要更小的 PRI。该结论对于空间进动目标探测与识别的数据率设定具有一定参考意义。%Aiming at the wideband polarization correlation of spatial precession targets,its definition and physical meaning are firstly presented.Then the fully polarized radar echoes of spatial precession targets un-der typical battle case are generated based on the simulation of dynamic return with the data measured in ane-choic chamber.After that,the wideband polarization correlations of four typical targets are analyzed and the pulse recurrence interval(PRI)setting of alternative polarization measurement radar is considered.The ex-periment results show that PRI=10 ms is requested under the typical parameter setting.Nevertheless,since the true case is worse than the simulated one,the smaller PRI is needed.The conclusion is beneficial to the PRI setting of those alternative polarization measurement radars which are used for the detection and identifi-cation of spatial procession targets.