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�������պ����ѧѧ�� 2002, Vol. 28 Issue (3) :358-361    DOI:
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Control Strategy and Implementation for Acquiring C/A Code of High Dynamic GPS Signals
LUO Xing-yu, ZHANG Qi, CHANG Qing*
Beijing University of Aeronautics and Astronautics, Dept. of Electronic Engineering

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ժҪ Ϊ���߶�̬GPS(Global Positioning System)�ź�,��Ҫ����뻷���ز����������������ϵͳ.��������ä��ʱ��,���ٲ����ź�,�����Ƹ߶�̬GPS���ջ������Ĺؼ�,��GPS�ź�C/A��Ŀ��ٲ���������ٺ��ز���������ٵĻ���.��Ҫ�������ڸ߶�̬GPS�ź�C/A�벶����,�����������ʹ�����������ԭ����ʵ��,�����GEC��˾��ʮ��ͨ�������GP2021,��������DSP(�����źŴ�����)�����ô�������������߶�̬GPS�ź�C/A����㷨ʵ��.
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Abstract�� It is necessary to design acquisition and tracking system for code loop and carrier loop in order to detect high dynamic GPS signals. Acquiring signal quickly and shortening acquisition time in the cold case are the key technologies of high dynamic GPS receiver. Moreover, fast acquisition of C/A code is the base of code tracking and carrier acquisition and tracking. This paper describes elements and implementation of parallel search precept and sequential search precept to acquire C/A code of high dynamic GPS signal. And combined with a 12-channel correlator named GP2021 produced by GEC Co., the arithmetic implementation to acquire C/A code of high dynamic GPS signal used sequential search precept based on DSP technology is also given.
Keywords�� pseudorandom codes   trapping   false alarms     
Received 2001-03-19;
Fund:

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������, ������, ����.�߶�̬GPS�ź�C/A�벶�񷽰���ʵ��[J]  �������պ����ѧѧ��, 2002,V28(3): 358-361
LUO Xing-yu, ZHANG Qi, CHANG Qing.Control Strategy and Implementation for Acquiring C/A Code of High Dynamic GPS Signals[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2002,V28(3): 358-361
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