箔条云团雷达回波建模与仿真

箔条云团雷达回波的建模与仿真一直是电子对抗领域研究的热点之一。为反映不同雷达极化、不同入射方向等条件下雷达回波的差异,在有关单根箔条运动模式、后向散射特性等已有研究成果的基础上,首先通过分析视线及其极化分量与雷达天线和箔条的角度关系完善了演绎法建模的理论研究。其次设计了基于统一计算设备架构(compute unified device architecture, CUDA)的CPU与GPU串并行计算程序,解决了演绎模型仿真时计算量大的难题。最后从雷达回波的距离多普勒特性、幅度分布特性等多个方面对仿真结果进行了分析,并通过与外场实测和理论推导数据的对比验证了仿真结果的可信性。

Modeling and simulation of the radar echo of chaff cloud

The modeling and simulation of the radar echo of chaff cloud have always been a hot issue in the area of electronic countermeasures. In order to reflect the otherness of radar echo under conditions of different polarization and different incident direction, on the basis of existing research results about the motor patterns, backscatter characteristic of single chaff, the theoretical research of deducible modeling is completed through analyzing the angular relationship between the sight along with its polar components and the radar antenna and the chaff. Then, the problem of huge computational cost of the deducible simulation is solved by designing a CPU and GPU series-parallel program based on compute unified device architecture (CUDA). Finally, the simulation result is analyzed from the aspects of range-Doppler, amplitude distribution characteristics of the radar echo and so on, and its credibility is demonstrated by comparing with the collected and theoretically derived data field.