频率步进信号宽带模糊函数及其应用

为了有效解决基于窄带回波模型的窄带模糊函数已无法有效分析运动目标回波信号处理中的问题这一矛盾,在宽带回波模型的基础上提出了频率步进信号宽带模糊函数,分析了宽带模糊函数的性质,证明了窄带模糊函数只是宽带模糊函数在低速情况下的近似.基于宽带模糊函数匹配点的特性,提出了基于匹配点幅值的目标检测方法.仿真结果验证了该方法的有效性.

Wideband Ambiguity Function of Stepped Frequency Waveform and Its Application

With the development of wideband radar technology, the narrowband ambiguity function (NAF), which is based on the narrowband echo model, is not effective to analyze the signal process issue of moving target echo. To solve this problem, the wideband ambiguity function (WAF) of stepped frequency (SP) waveform is proposed based on wideband echo model. The property of wideband ambiguity function was studied, from which we could prove that NAF is just an approximate to WAF under low velocity condition. Making use of WAF match point characteristic, a target detection method based on the amplitude of match point was advanced. Simulation results verify the effectiveness of the method.