| 摘要: |
| 分时多频(Time-Division-Multifrequency)数字电视外辐射源雷达以分时切换方式轮流接收来自多个发射站的目标反射信号从而提高探测性能。但在实际应用中发射站位置往往不能预先获得而需要现场实时测量，为了解决这个问题，本文建立多发单收外辐射源雷达目标定位模型并结合时间对齐后多个收发对的目标量测，得到发射站位置存在偏差情况下的目标状态，从而构造出以发射站坐标偏差为参数的伪量测方程；通过扩展卡尔曼滤波处理求解所求参数，并通过牛顿迭代法以补偿线性化所带来的误差，从而得到发射站精确位置。仿真结果与分析表明，此方法可以有效地对发射站进行定位，且收敛速度较快。 |
| 关键词: 外辐射源雷达 分时多频 发射站定位 空间配准 |
| DOI：DOI:10.3969/j.issn.1672-2337.2022.03.013 |
| 分类号:TN958.97 |
| 基金项目:国家自然科学基金（No.61271400， U1933135， 62071335， 61931015）； 苏州市重点产业技术创新专项（前瞻性应用研究）项目（No.SYG202007） |
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| Positioning Method of Transmitting Station for Time-Division-Multifrequency Passive Radar |
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CHEN Yuhang， RAO Yunhua， PAN Yuying， WAN Xianrong， WU Minyuan
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School of Electronic Information， Wuhan University， Wuhan 430072， China
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| Abstract: |
| The time-division-multifrequency digital TV passive radar receives the target reflection signals from multiple transmitting stations by switching the working frequency, so as to improve the detection perfor-mance. However, in practical application, the location of the transmitting station can not be obtained in advance, but needs real-time measurement. In order to solve this problem, this paper establishes the target location model of multi-transmitter single-receiver passive radar. Combined with the target measurement of multiple transceiver pairs after time alignment, the target state with the deviation of the transmitting station is obtained, and the pseudo measurement equation with the coordinate deviation of the transmitting station as the parameter is constructed. The iterative processing of extended Kalman filter is used to compensate the error caused by linearization, so as to solve the coordinate deviation and finally obtain the accurate position of the transmitting station. Simulation results and analysis show that this method can effectively locate the position of the transmitting station with a fast convergence speed. |
| Key words: passive radar time-division-multifrequency transmitter localization spatial registration |
