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Vol. 163, Issue 1, January 2014, pp. 141-147




Research of Acquisition Algorithm of P Code in Navigation Signals

1, * Ying Xu, 2 Maoshu Zeng, 2 Zhili He, 1 Hong Yuan

1 Academy of Opto-electronics, Chinese Academy of Sciences, No. 9, Street Dengzhuangnanlu, District Haidian, Beijing, 100094, China
2 University of Chinese Academy of Sciences, Chinese Academy of Sciences, No. 19, Street Yuquan, District Shijingshan, Beijing, 100049, China
* Tel.: 010-82178654

* E-mail: nadinexy@aoe.ac.cn


Received: 1 November 2013 /Accepted: 9 January 2014 /Published: 31 January 2014

Digital Sensors and Sensor Sysstems


Abstract: Aimed at solving the problems of Precision code’s complex acquisition procedures and its long acquisition time in satellite navigation, this paper makes an architecture analysis of the commonly used direct acquisition algorithms of Precision code, making an improvement of the common local pseudorandom code based glide Fast Fourier Transform acquisition architecture. Besides those, it also puts forward a local pseudorandom code based fixed Fast Fourier Transform acquisition architecture and improved pseudorandom code superposed Fast Fourier Transform acquisition architecture. Compared with common local pseudorandom code based glide Fast Fourier Transform acquisition architecture, the methods proposed efficiently simplify acquisition complexity and shorten acquisition time.


Keywords: Precision code (P code), Direct Acquisition, Fast Fourier Transform (FFT), Acquisition Time.


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