基于DTTB信号的无源雷达并行信号处理算法参数设置

Parameter Establishment of Patch-parallel Processing Algorithm in DTTB-based Passive Radar

为提高信号处理的实时性,基于DTTB信号的无源双基地雷达可采用分块并行处理的算法结构计算待探测目标区域的距离多普勒图。分块长度是分块并行处理算法的重要参数,它受到雷达探测半径、系统最大不模糊速度以及DTTB信号结构等因素的综合约束。对分块并行处理算法结构进行了描述,理论分析并结合实测实验给出了多个约束条件下的分块长度取值范围,对工程实践具有指导意义。

In order to improve real-time signal processing,passive bistatic radar based DTTB can employ batch-parallel processing algorithm to calculate the Range-Doppler diagram. The batch length is the most important parameter in batch-parallel processing algorithm,which is constrained by maximum-unambiguous-speed,range of radar surveillance,signal framing structure and other factors. The structure of block parallel processing algorithm is described in this paper,and the range of block length constrained by some constraints is given through theoretical analysis and real data experiments,which can be useful for the engineering practice.