用于雷达高度计定标的海面回波模拟器误差分析  

Bias Analysis of Return Signal Simulator Used on Radar Altimeter Calibration

作　　者：胥传东[1,2] 徐曦煜[1] 杨双宝[1] 郭伟[1] 刘和光[1] 

机构地区：[1]中国科学院空间科学与应用研究中心,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《遥感技术与应用》2011年第1期60-67,44,共9页Remote Sensing Technology and Application

摘　　要：雷达高度计发射前普遍采用回波模拟器来进行定标,所以对回波模拟器的误差进行准确的定量分析是高度计发射前的必备工作。在介绍回波模拟器原理的基础上,对影响回波模拟器误差的频综单元性能、二次相位、幅相起伏、延迟等特性进行了分析,最终根据设计指标计算了回波模拟器的系统误差。结果表明回波模拟器自身的精度能够满足海洋二号(HY-2)雷达高度计发射前定标的需要。The radar altimeter prelauch calibration was commonly carried our by return signal simulator,so the bias on return signal simulator need to be quantitatively analyzed.The return signal simulator principle,biases such as quadratic phase bias,amplitude and phase bias,delay bias were detailed.In the last section the whole system bias on return signal simulator was calculated.The HY-2 radar altimeter prelaunch calibration was successfully realized on the basis of return signal simulator precision.

关 键 词：回波模拟器 二次相位误差 幅相不平衡误差 定标 

分 类 号：TN953[电子电信—信号与信息处理]