基于快拍数据聚焦的时变阵元位置校正算法  

Position Error Self-calibration with Time-varying Array Based on Snapshot Focusing

作　　者：周戈[1] 王冬梅[2] 

机构地区：[1]重庆青年职业技术学院信息工程系,重庆400712 [2]驻马店职业技术学院信息工程系,河南驻马店463000

出　　处：《控制工程》2017年第7期1329-1335,共7页Control Engineering of China

基　　金：国家自然科学基金(11104362)

摘　　要：阵列天线位置的不确定性会严重影响阵列天线的测向性能。在远场情况下,针对阵元时变阵列,提出了一种基于协方差矩阵聚焦的阵元位置误差校正的自校正算法。该算法能够对时变的阵元位置误差进行实时校正,并可对信源的来波方向准确估计,相比普通的近似分段估计,能更充分有效利用快拍数据,故参数估计精度更高。计算机仿真结果验证了该算法的有效性。The sensor location uncertainty of an array antenna will severely affect its direction tlnchngperformance. In the case of far field sources, a new self-calibration method for sensor location in thetime-varying array is presented. Based on the focusing matrix method, the proposed self-calibration method canestimate time-varying position errors. The directions of unknown signals can be found simultaneously.Compared with the traditional method, the snap shot can be taken full advantage in this method. Therefore, theparameter estimation accuracy is improved considerably. The simulation results are presented to confirm thevalidity of the algorithm.

关 键 词：时变阵列 阵元位置误差 聚焦算法 自校正 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]