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| Acquisition Algorithm Combining Parallel Code Phase with FractalReconstruction of TMBOC Modulation Signal |
| ZHANG Tianqi,YAN Zhenhua,OU Xudong,QIAN Wenrui
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| (Chongqing Key Laboratory of Signal and Information Processing, Chongqing University of
Posts and Telecommunications, Chongqing 400065, China) |
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Abstract Abstract： Aimed at the ambiguity in acquisition of the TMBOC modulation signal caused by the multipeaks of autocorrelation function, this paper proposed an acquisition algorithm combining parallel code phase with fractalreconstruction to remove ambiguity. The algorithm demodulates the received signal, and uses local PN code and BOC code to correlate with demodulated signal. Next, it takes the absolute value of the results and addition. Finally, it utilizes the fractalreconstruction algorithm to fold a new correlation function without subpeaks. Theoretical analysis and simulation results show that the algorithm can capture the signal effectively with low complexity. Moreover, its correlation peak increases by 43.7% compared to the ASPeCT algorithm, and its main peak power reaches 96% through twopath channel.
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Received: 04 May 2015
Published: 28 May 2016
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