摘要
提出一种利用多个CDMA基站发射的下行链路信号作为外辐射源构成无源雷达定位系统的方案,主要包括自适应杂波相消、距离-多普勒处理、定位参数提取、多站数据融合等功能模块。利用自适应算法进行杂波干扰的消除,对相消后的回波信号进行相干匹配滤波实现动目标检测。最后通过联立多站位置线方程实现了对目标的定位。计算机仿真验证了该方案的可行性,并证明了多个辐射源对定位精度的改善。
A concept of the passive radar location system by using down-link communication signal of the multiple CDMA base stations as the external illuminator is presented. The system is mainly composed of functional modules such as adaptive clutter cancellation, range-Doppler processing, location parameters extraction and data fusion of multiple base stations. The adaptive algorithm is utilized to eliminate clutter jamming. The cancelled echo signal is carried out coherent matched filtering so as to detect the moving target. Finally, location of the target is implemented by simultaneous multiple station position linear equation. The feasibility of this concept is verified with the computer simulation and the improvement on locating accuracy is demonstrated by using multiple illuminators.
出处
《火控雷达技术》
2009年第2期4-9,共6页
Fire Control Radar Technology
关键词
CDMA通信信号
无源雷达
杂波相消算法
动目标检测
无源定位
CDMA communication signal
passive radar
clutter cancellation algorithm
moving target detection
passive location
