混合布阵干涉仪系统误差标校方法研究  

Systematic error calibration algorithms of hybrid sensor array interferometer system

作　　者：马琴[1] 张永强[2] 苏抗[1] 赵巾卫[1] Ma Qin;Zhang Yongqiang;Su Kang;Zhao Jinwei(No.8511 Research Institute of CASIC,Nanjing 210007,Jiangsu,China;Institute of Tracking and Telecommunications Technology,Beijing 100094,China)

机构地区：[1]中国航天科工集团8511研究所,江苏南京210007 [2]北京跟踪与通信技术研究所,北京100094

出　　处：《航天电子对抗》2023年第2期7-12,共6页Aerospace Electronic Warfare

摘　　要：针对混合布阵干涉仪系统误差标校问题,研究了“参数法”、“建表法”等系统误差估计方法。在分析误差来源基础上,根据混合布阵干涉仪系统特点,对系统误差理论模型进行简化。针对“参数法”,提出系统误差分步标校方案,即先标校旋转矩阵系统误差,再标校天线位置和通道相位系统误差。而大视角侦收低频段辐射源时,采用“参数法”标校后系统误差控制结果不能满足使用要求,提出采用“建表法”进行系统误差标校。通过理论仿真和实测数据处理进行算法验证,结果表明该方法可以精确估计系统误差,有效提高定位精度和解模糊概率。最后给出频率扩展性分析及提高标校效率建议。Systematic error calibration methods of hybrid sensor array interferometer systems are discussed.The theoretical model of systematic error is simplified according to the characteristics of hybrid array interferome⁃ter system.The“parameter”calibration method with two-step is proposed.Firstly,the transformation matrix sys⁃tem error from interferometer coordinate to station body coordinate is estimated,and then the antenna position and phase system error is calibrated.When the observation receiver detects L band emitters with large angle,the“azimuth-pitch-phase systematic error”data list is proposed for systematic error calibration.The experimental re⁃sults based on measured data and theoretical simulation results demonstrate that the method is effective.The sta⁃tionary emitter location accuracy and probability of obtaining correct DOA from multiple DF results is improved.Finally,the issue of“parameter”value frequency adaptation range and the method to improve calibration efficien⁃cy are also discussed.

关 键 词：混合布阵 干涉仪 系统误差 标校 

分 类 号：TN97[电子电信—信号与信息处理]