基于信号相位匹配原理的单频信号检测  

A Method for Single-Frequency Signal Detection Using Signal Phase Matching Principle

作　　者：刘理[1] 梁红[1] 孙进才[1] 胡旭娟[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《西北工业大学学报》2005年第3期307-310,共4页Journal of Northwestern Polytechnical University

基　　金：自然科学基金(60272077);航空科学基金(02F53030);陕西省科学基金(2002F17)

摘　　要：根据信号相位匹配原理及其信号参数的最小二乘估计方法,提出了一种单频信号检测方法。推导了利用单传感器接收信号实现检测的公式。对已知频带内未知频率信号的检测性能进行了仿真。分析了最小二乘法使用的方程数、信噪比和虚警概率对检测概率的影响。结果表明,该方法检测性能优于能量检测器,次于匹配滤波器。On the basis of signal phase matching principle and the method of least squares of parameter estimation, a method for single-frequency signal detection is presented in this paper. The formula for detecting signals received by a single sensor were derived. By Neyman-Pearson rule, simulation of signal detection when frequency is unknown but frequency range is known was carried out. The influence of the ratio of signal to noise, probability of false alarm, and the number of equations on detection probability was analyzed. The results show that the performance of this method is better than that of the energy detector and lower than that of the matched filter.

关 键 词：信号相位匹配原理 最小二乘法 单频信号检测 

分 类 号：TN911[电子电信—通信与信息系统]