一种多相编码脉压信号的检测与参数估计方法  

Detection and parameter estimation method for polyphase-coded pulse compression waveforms

作　　者：李宏[1] 陈绍荣[1] 秦玉亮[1] 王宏强[1] 黎湘[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,湖南长沙410073

出　　处：《系统工程与电子技术》2011年第2期310-314,共5页Systems Engineering and Electronics

摘　　要：针对低截获概率雷达中常用的一类由频率导出的多相编码信号(P1、P2、P3、P4及Frank码)的截获问题,研究了基于积分二次相位函数的检测与参数估计方法。该方法利用此类多相编码信号的二次相位函数在时间-调频率平面仅为一条平行于时间轴直线的特点,通过积分二次相位函数获得能量积累,完成信号检测的同时实现了信号调频率参数的估计。分析了检测统计量的输出信噪比性能,给出了算法的接收机工作特性曲线和检测性能曲线,仿真分析了算法的参数估计性能。An integrate quadratic phase function based signal detection and parameter estimation algorithm is proposed to investigate the interception problem of polyphase codes,P1,P2,P3,P4,and Frank,referred to as frequency-derived codes,which are widely used in low probability of intercept radar applications.The polyphase-coded signal＇s quadratic phase function has its energy concentrated along a ridge that runs parallel with the axis of time,which is used by the integrate quadratic phase function to detection the signal.The sweep rate estimates can be obtained as a by-product of the detection algorithm.The detection performance is evaluated by using the output signal-to-noise ratio,the receiver operating characteristics graphs,and the detection performance graph.The computer simulations are used to evaluate the parameter estimation performance of the proposed algorithm.

关 键 词：信号检测 参数估计 多相编码 积分二次相位函数 

分 类 号：TN911.7[电子电信—通信与信息系统]