岸-舰双基地综合脉冲孔径雷达的初始相位校准及误差分析  

Phase Calibration and Error Analysis for Coast-Ship Bistatic Synthetic Impulse and Aperture Radar

作　　者：陈多芳[1] 陈伯孝[1] 刘春波[1] 张守宏[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,西安710071

出　　处：《电子与信息学报》2008年第2期302-305,共4页Journal of Electronics & Information Technology

基　　金：国家部级基金

摘　　要：岸-舰双基地综合脉冲孔径雷达(SIAR)由于收发分置且接收站在运动平台上而不能采用物理链路进行同步。该文提出了在接收站利用直达波对每路发射信号的初始相位进行校准,从而综合得到发射方向图。分析了信号的截断、离散化、DFT对频率的离散化、接收平台运动、多径效应、GPS定位误差等对初相校准的影响以及补偿方法。通过计算机仿真数据以及外场实测数据的分析与处理,证明了这种方法的可行性。The synchronization by using physical link for coast-ship bistatic SIAR is impractical due to the fact that the receiver is installed on a moving ship. The direct-path wave is used to calibrate the phase and complete the transmit beamforming. The factors that have effects on the accuracy of phase calibration include truncation, discretization, DFT, the motion of the receiver, multi-path and so on. The effects are analyzed and the corresponding compensation is given. The method introduced has been proved feasible by the processing of both the computer simulation and the real data.

关 键 词：双基地综合脉冲孔径雷达 直达波 相位校准 综合脉冲孔径技术 

分 类 号：TN957.51[电子电信—信号与信息处理]