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  • Research Article
  • Open Access

Weak GPS Signal Acquisition Algorithm Based on Chaotic Oscillator

EURASIP Journal on Advances in Signal Processing20092009:862618

  • Received: 21 November 2008
  • Accepted: 16 September 2009
  • Published:


To detect weak Global Position System (GPS) signal indoors, various high-sensitivity detection algorithms have been proposed. However, a common tradeoff between high-sensitivity and computation burden impedes development of high sensitivity GPS receiver. As another strategy, chaotic oscillator, sensitive to periodic signal and inert to noise, possesses huge advantage in weak signal acquisition. In this paper chaotic oscillator is employed in weak GPS signal acquisition. With numerical indication of Lyapunov exponents (LEs), chaotic oscillator can achieve acquisition in extremely weak GPS signal. Compared with conventional algorithm, chaotic oscillator consumes less acquisition time and is capable of detecting weak GPS signal. In the final section of paper, results from computer simulation illustrate that chaotic oscillator algorithm can acquire GPS signal at 48 dB/2MHz SNR.


  • Information Technology
  • Quantum Information
  • Full Article
  • Chaotic Oscillator
  • Signal Acquisition

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Authors’ Affiliations

701-4 Laboratory School of Electronic Engineering, Electronic Science and Technology University of China, Number 4 Section 2, Jianshe Road, Chengdu, 611731, China


© Pengda Huang et al. 2009

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.