一种基于FFT与分段自相关函数的频域LPI信号检测方法  

A Method based on FFT and Piecewise Autocorrelation Function of LPI Signal Frequency Domain Detection Method

作　　者：张柏林[1] 王龙[1] 吴宏超[1] 

机构地区：[1]中国人民解放军空军航空大学,吉林长春130022

出　　处：《科技视界》2016年第6期186-187,共2页Science & Technology Vision

摘　　要：针对LPI雷达信号的检测难题,本文提出了一种基于FFT和分段自相关函数的频域检测算法,通过在频域进行非相干积累来提高信号的检测概率,首先给出了算法的基本原理,然后推导出了噪声在频域的概率分布,然后根据噪声分布规律给出了信号的检测门限,然后通过仿真验证了该算法的准确性和可行性。For LPI radar signal detection, this paper puts forward a kind of based on FFT and piecewise autocorrelation function of the frequency domain detection algorithm, by conducting a noncoherent accumulation in the frequency domain to improve the detection probability of the signal, firstly the basic principle of the algorithm is presented, and then deduced the probability distribution of noise in the frequency domain, and then according to the distribution of noise signal detection threshold is given, and then through the simulation verify the feasibility and the accuracy of the algorithm.

关 键 词：LPI信号 信号检测 检测门限 概率分布 

分 类 号：TN911.1[电子电信—通信与信息系统]