Tracking loop with dynamic gain controlled DPLL in software GPS receiver

被引：0
|
作者：
Ho, P. T. [1 ]
Mao, W. L. [2 ]
Tseng, Y. F. [3 ]
Chang, F. R. [1 ]
Tsao, H. W. [1 ]
机构：
[1] Natl Taiwan Univ, Dept Elect Engn, Taipei, Taiwan
[2] Natn Formosa Univ, Dept Elect Engn, Huwei Township, Yunlin, Taiwan
[3] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90024 USA
来源：
9TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY: TOWARD NETWORK INNOVATION BEYOND EVOLUTION, VOLS 1-3 | 2007年
关键词：
bitwise software correlation; gear-shifting gain control; Global Positioning System (GPS); and carrier tracking loop;
D O I：
10.1109/ICACT.2007.358453
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
Tracking is an important step in the signal processing section of a GPS receiver. It detects the presence of GPS signals received by antenna and provides precise estimation of the code phase and Doppler frequency for navigation data demodulation. The main research of this paper is to design and analyze of the tracking loop algorithms of GPS software receiver. First, a software parallel correlation is presented to enhance the speed of signal processing which can reduce the execution time. A new loop controller design method for DPLL is developed. The DPLL with gear-shifting gain control technique is implemented such that a better performance of transient response is accomplished. It is shown that our algorithm can save 23.9% of settling time in comparison with the conventional DPLL.
引用
收藏
页码：711 / +
页数：2
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