一种多模式合成孔径雷达数字接收机  

Digital Receiver for Multi-Mode Synthetic Aperture Radar

作　　者：陈佳民[1] 童智勇[1] 杨汝良[1] 

机构地区：[1]中国科学院电子学研究所

出　　处：《电子器件》2006年第4期1097-1102,共6页Chinese Journal of Electron Devices

摘　　要：针对一种多模式极化合成孔径雷达(SAR),给出了中频数字接收机工作参数选择,混频滤波方法,实现了三种带宽信号的数字正交解调。通过分析同相、正交通道误差对正交解调性能的影响,确定了滤波器最佳设计准则。最后给出了基于FPGA的实现结构,仿真试验结果表明中频数字接收机性能比一般模拟接收机有显著提高。Under studying the function of a multi-mode polarization Synthetic Aperture Radar （SAR）, the operation parameter, mixing, filtering method for digital IF receiver is presented based on Field Programmable Gate Array（FPGA）. Digital quadrature demodulation for three bandwidth signal is realized. The effect of in-phase and quadrature channel errors on digital quadrature demodulation is analyzed and an optimal digital filter design method is selected. Simulation results show that the performance of the digital receiver is significantly improved than that of the analog one.

关 键 词：合成孔径雷达(SAR)数字接收机 正交解调 现场可编程门阵列(FPGA) 

分 类 号：TN957.52[电子电信—信号与信息处理] TN911.72[电子电信—信息与通信工程]