目标速度对脉间变频格式RCS测试的影响

研究了在脉间变频格式目标雷达散射截面(RCS)测试中目标径向速度对测试结果的影响.从目标像位置偏移和目标像发散两个方面分析了目标径向速度造成RCS测试结果误差的原因,进行了计算机仿真,给出速度与误差的数值关系.通过对仿真数据的分析,提出减小RCS测试误差的方法.根据双通道雷达能够同时在两个频段上对同一目标进行测试的特点提出了一种校正被测目标径向速度影响的方法,并用该方法对BHEML-1型雷达的外场实测数据进行了处理和分析比较.

Object’s velocity effect on pulse to pulse frequency shifting RCS measurement

Object's radial velocity effect on object's radar cross section(RCS) outdoor measurement with pulse to pulse frequency shifting radar was researched.The cause of object's radial velocity make RCS measurement results inaccurate were analyzed from the aspects of object-imaging's position shifting and profile distortion.The numerical relationship between the velocity and RCS measurement error was presented using computer simulation.A method to reduce the RCS measurement error was presented base on these analysis.A method to correct the object's velocity effect was discussed bases on the architecture that the two-channels radar can measure the target on two different frequency band in the same time.The method was used to deal with the measurement data of BHEML-1 radar and the results were analyzed and compared.