摘要
伪码测距以其较长的无模糊距离和较高的测量精度的显著优势,广泛应用于航天测控系统中。依据伪码测量原理,并结合工程经验数据,通过分析星地伪码测距系统的具体实现结构,研究了系统中各误差源引入的随机误差和系统误差,其中以星地伪码测距设备引入的测量误差作为重点,并对主要误差源伪码跟踪环路进行了较为深入的剖析。
Pseudo noise code ranging has been widely used in space TT＆C systems for its merit of long unambiguous distance and high precision.The principle of radio ranging is studied, the structure of the ground-to-satellite PN code ranging system is analyzed, and some experiential data are collected. The quantization analysis of error sources, especially the error source of the ranging equipment, is performed. The early-late PN code tracking loop is mainly studied.
出处
《无线电工程》
2009年第1期39-41,44,共4页
Radio Engineering
关键词
星地伪码测距系统
相位测量误差
伪码跟踪环
ground-to-satellite PN code ranging system
error of phase measurement
PN code tracking loop
