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中文摘要：
针对码分多址（code division multiple access，CDMA）移动通信网中，一个区域内存在多个CDMA基站以同样的频率发射不同的信号，一般很难确定多个基站的能量强弱和方向，提出一种利用阵列天线的CDMA辐射源雷达目标检测方法。利用级联相消消除各个基站的干扰。首先，通过导频搜索确认每一阶段当前具有最强能量的基站，并给出一种精确测量该基站方向的方法；然后，消去各个天线阵子接收到的该基站干扰，再依次循环进行，将各个基站干扰按能量从大到小依次消除，直到干扰充分消除；最后，进行波束扫描和距离多普勒相关以检测目标。计算机仿真验证了该目标检测方法的有效性。
英文摘要：
Within a system of code division multiple access （CDMA）, in an area there exist multiple base stations which transmit different signals in the same frequency bandwidth. And usually it is difficult to identify the energy intensity and direction of these multiple stations. Aiming at this problem, a method of target detection for CDMA based passive radar using array antenna is proposed. This method uses a concatenation cancellation method to remove the inference of each base station. Firstly the strongest base station at each step is identified through pilot search and the direction of the station is measured accurately, then the interference of the station in each channel is canceled. Repeat this in turn according to the energy intensity of each station till the interference is suppressed sufficiently. Finally beamform and rang-Doppler correction are performed in order to detect the target. Computation simulation verifies the availability of this method.
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