主动声纳宽带信号的一种高效参数估计算法

讨论在宽带信号体制下,对水中高速目标的检测与估计问题,给出了高斯包络线性调频信号必须采用宽带模糊函数进行检测时的带宽和目标速度范围。在仿真分析了信号宽带、窄带模糊函数主峰特性的基础上,提出了一种联合利用宽带模糊函数和窄带模糊函数的高效目标参数估计算法,该算法可以将二维相关运算简化到一维相关运算,降低了运算量,同时具有良好的估计精度。

Efficient target parameter estimation for active sonar wideband signal

This paper discusses the problems of detection and parameter estimation of the under-water high speed target in the wideband signal system. The range of Gaussian-LFM bandwidth and target speed are given when wideband ambiguity function must be used in detection. And then, based on the analysis of Gaussian-LFM main ridge characterisrics of ambiguity functions, an efficient target parameter estimation is proposed. The computational efficiency of this algorithm is achieved by reducing 2-d peak searching into 1-d peak searching.