摘要
数字延迟锁定环路 (DDLL)中存在的包络现象是导致低动态环境下 GPS伪距测量精度难以提高的重要原因。文中从实验中发现这种现象 ,通过大量仿真复现了这一现象并找到产生这一现象的原因 ,最后从理论上进行分析并给出解决问题的方法。
The envelope phenomenon occurring in DDLL is the i mporta nt cause that makes pseudorange measurement accuracy difficult to be deep impr oved under the circumstances of low dynamic. The phenomenon was first observed in experimentation.This phenomenon has been recurred in a lot of simulations an d the cause resulting in envelope phenomenon has been found.The envelope phenome non is examined and researched in this paper.At the end of the paper,a the oretical analysis is put on the phenomenon and the solution for this question is presented.
出处
《遥测遥控》
2004年第3期1-6,共6页
Journal of Telemetry,Tracking and Command
