多扫频接收方案改善电离层相位失真估计的算法  

Improved Ionospheric Phase Contamination Estimation Algorithm Using Multiple-Sweep-Frequency Receiving Scheme

作　　者：朱瑜红[1] 卢琨[1] 刘兴钊[1] 

机构地区：[1]上海交通大学电子工程系,上海200030

出　　处：《数据采集与处理》2005年第2期236-239,共4页Journal of Data Acquisition and Processing

摘　　要：提出了一种新的多扫频接收方案,以改进对电离层相位路径失真的估计精度。该方案无需对发射端进行改动,只在接收端采用多扫频信号进行混频,即可分离出含有相同的电离层相位路径失真信息的多通道数据。利用多通道数据可获得比单通道数据更好的相位失真估计。通过理论推导和仿真实验,验证了提出方案的有效性。A novel multiple-sweep-frequency receiving scheme is proposed to improve the estimation accuracy of ionospheric phase path contamination. In the proposed scheme the echoes are mixed with multiple-sweep-frequency waveform on the receiver, that is, any modification is not necessary on the transmitter to divide the received data into multiple channel datasets. Using the multiple channel datasets, the phase contamination estimation can be achieved. Experimental simulations and derivations demonstrate that the improved method is effective.

关 键 词：超视距雷达 高频天波 相位路径失真 多扫频接收 

分 类 号：TN958.93[电子电信—信号与信息处理]