| DDLL中存在的包络现象及其解决方法 |
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| 作者姓名： | 聂裕平 李斌 李晓东 |
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| 作者单位： | 北京遥测技术研究所 北京100076
(聂裕平，李斌)，北京遥测技术研究所 北京100076(李晓东) |
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| 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。
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| 关 键 词： | 数字延迟锁定环 包络 测距精度 |
Envelope Phenomenon Occuring in DDLL and the Solution |
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| Authors: | Nie Yuping Li Bin Li Xiaodong |
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| Institution: | Nie Yuping Li Bin Li Xiaodong |
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| Abstract: | 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. |
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| Keywords: | DDLL Envelope Ranging precision |
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