Laser & Optoelectronics Progress, Volume. 57, Issue 13, 131206(2020)
Fast and Precise Acquisition of GPS Signal Optimized by Improved Orthogonal Search
In order to improve the acquisition speed and accuracy of global positioning system (GPS) software receiver, an improved orthogonal search precise acquisition method is proposed. Firstly, the correlation acquisition results of GPS signals are used to remove the code phase, and an alternative set of functions is constructed. Then, based on signal decomposition theory, the precise acquisition of signals is realized by orthogonal search. The orthogonal search method is improved, and the iterative search strategy is adopted to improve the acquisition speed. The theoretical analysis and experimental results show that this method can achieve high precision estimation of precise acquisition frequency of GPS signal, and the convergence speed of precise acquisition is very fast, which can effectively reduce the resource consumption of GPS equipment.
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Jing Sun, Wei Zhang. Fast and Precise Acquisition of GPS Signal Optimized by Improved Orthogonal Search[J]. Laser & Optoelectronics Progress, 2020, 57(13): 131206
Category: Instrumentation, Measurement and Metrology
Received: Feb. 3, 2020
Accepted: Mar. 17, 2020
Published Online: Jul. 9, 2020
The Author Email: Sun Jing (sunj_197@sina.com)