[关键词]
[摘要]
建立了微波稀布阵综合脉冲孔径雷达发射阵列的幅相误差模型,研究了基于近场窄脉冲和基于远场直达波的2种幅相误差校正方法:前者通过近场天线接收不同频率窄脉冲并进行通道分离、频谱分析等处理后提取幅相误差;后者通过远场天线接收直达波并在去调频后再提取幅相误差。前者运算量较小适用于工程实现;而后者运算量较大,在接收站定位精度较高时这种方法可获得较高的估计精度。仿真结果表明2种方法均能较好地估计幅相误差。
[Key word]
[Abstract]
The amplitude-phase error model of transmit array in microwave sparse-array synthesis impulse and aperture radar,is constructed in this paper.And two calibration methods,which are near field method based on narrow impulses and far field method based on direct-path waves,are studied.The former method receives different-frequence narrow impulses from the near field antennas,and extracts the amplitude-phase error by channel separating and spectrum analysis.The latter one receives the direct-path waves from the...
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[基金项目]
国家自然科学基金资助项目(61001209); 西安电子科技大学基本科研基金资助项目(JY10000902010)
