机载相控阵雷达和差通道地面杂波功率谱分析  

A Procedure for Analyzing Ground Clutter Spectrum in Sum and Difference Channels for Airborne Phased Array Radars

作　　者：宋旭东[1] 汪学刚[1] 向敬成[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054

出　　处：《信号处理》2002年第1期91-96,共6页Journal of Signal Processing

摘　　要：本文采用沿距离门一等多普勒线区域积分求杂波功率的方法，通过建立和差波束天线方向图模型，对机载相控阵雷达在常规脉冲高、中、低脉冲重复频率（ＰＲＦ）时和差通道的地面杂波功率谱进行了研究，分析了杂波功率谱受载机速度、ＰＲＦ、脉冲宽度、波束指向等参数影响的变化规律．分析结果对机载相控阵雷达杂波模拟和雷达信号处理都有实际应用意义。A procedure for analyzing ground clutter spectrum in sum and difference channels for airborne phased array radars is described in this paper. The quantity computed is the expected clutter power at the output of any specified range gate by the method of integrating reflected energy between constant Doppler loci in range-gate circles with a model of sum and difference antenna gain pattern for airborne phased array radars. The results revealed that the clutter spectrum in different range-gate is different with respect to carrier speed, PRF, pulse width, main beam direction, etc. The practicality of the analysis results for airborne phased array radars clutter simulation and signal processing is apparent.

关 键 词：机载相控阵雷达 差通道 地面杂波 信号处理 

分 类 号：TN958.92[电子电信—信号与信息处理] TN957.51[电子电信—信息与通信工程]