一种提高应答机伪码非相干测距精度的方法  

One Method for Improving Pseudocode Noncoherent Ranging Precision in Transponder

作　　者：李永波[1] 

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《电讯技术》2009年第3期66-69,共4页Telecommunication Engineering

摘　　要：为了解决伪码非相干测距技术应用于应答机时精度低的问题,分析了伪码非相干测距误差及模糊的产生机理,提出了依据码相位的连续性,采用基于比较前后码相位的方法来解距离模糊。该方法算法简单,实现容易,实际测试结果表明,其精度与相干测距相当,使得伪码非相干测距技术在应答机中得以工程化应用。In order to solve the low precision problem of noncoherent pseudocode ranging in transponder, the error of ranging and the principle of ambiguitiy are analyzed.The method based on the phase continuity is proposed. It uses the fore-and-aft pseudocode phase to solve the ranging ambiguitiy.This method is simple and easy to realize.The testing result indicates that the precision is equal to coherent pseudocode ranging. Through using these methods, the noncoherent pseudocode ranging technology is realized in transponder.

关 键 词：航天测控 应答机 相干测距 伪码 非相干 解模糊 

分 类 号：TN957.52[电子电信—信号与信息处理]