利用互模糊函数实现卫星干扰源定位  

Satellite interference location using Cross Ambiguity Function

作　　者：孙正波[1] 叶尚福[1] 

机构地区：[1]西南电子电信技术研究所现代信号处理国家重点实验室,四川成都610041

出　　处：《电波科学学报》2004年第5期525-529,共5页Chinese Journal of Radio Science

摘　　要：介绍了双星体制卫星干扰源定位系统工作的原理 ,对利用信号互模糊函数(CAF -CrossAmbiguityFunction)定位参数估计进行了研究 ,分析了参数估计的时频特性和参数的时变性对估计方法的影响 ,提出了提高CAF参数估计性能的优化处理方法。通过对实际转发信号的参数估计和定位实验 。A satellite interference location system using two-satellite techniques was introduced, with special attention to the location theory and parameter estimation by employing cross ambiguity function (CAF). The time-frequency characteristics of parameter estimation were analyzed, as well as the influence of the time variability of the location parameters on this estimation. To decrease the location error and accelerate the signal processing, optimum parameter estimation based on the real measure is put forward. The analysis about the CAF and the effectiveness of optimum measures are backed up with successful experiments using actual signals relayed by two satellites.

关 键 词：卫星干扰源定位 互模糊函数 时间差 多普勒频率差 卫星星历 相位校准 

分 类 号：TN927.2[电子电信—通信与信息系统] TN972.4[电子电信—信息与通信工程]