一种应用于全极化辐射计的相关处理算法  

A Correlation Algorithm for Fully Polarized Radiometer

作　　者：金旭[1] 余锐[1] 刘汝猛 李一楠[1] 吕容川[1] 李浩[1] 段崇棣[1] 

机构地区：[1]中国空间技术研究院西安分院,西安710000

出　　处：《空间电子技术》2015年第4期40-44,共5页Space Electronic Technology

摘　　要：数字相关器通过对全极化辐射计接收机V极化通道和H极化通道输出的宽带噪声信号进行高速采集并作复相关处理从而获取两路信号的复相关信息,但在高采样率下为实现数字信号的Hilbert变换将耗费大量的乘法器资源,现有的FPGA无法满足要求。文章提出了一种数字相关处理算法,在保证相关测量精度的同时,减少了FPGA资源的使用。Digital correlator is used to obtain correlation information between vertical and polarized. Using high-speed digital correlator vertically polarized signal and horizontally polarized signal from fully polarized radiometer are sampled and correlated to obtain complex correlation, But in the condition of high sampling rate. A number of multiplier resources will be consumed for Hilbert transformation and available FPGA can not satisfy the resource requirement. A digital correlation pro- cessing algorithm is presented in this paper Simulation. Simulation and test results show that the algorithm can achieve accu- rate correlation measurements with high precision and low cost.

关 键 词：全极化微波辐射计 风场 数字相关 FPGA 

分 类 号：TP75[自动化与计算机技术—检测技术与自动化装置]