Skip to main content
EURASIP Journal on Advances in Signal Processing
Download PDF
  • Research Article
  • Open access
  • Published:

Weak GPS Signal Acquisition Algorithm Based on Chaotic Oscillator

EURASIP Journal on Advances in Signal Processing volume 2009, Article number: 862618 (2009) Cite this article

Abstract

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.

Publisher note

To access the full article, please see PDF.

Author information

Authors and Affiliations

  1. 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, Yiming Pi & Zhiqin Zhao

Authors
  1. Pengda Huang
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Yiming Pi
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Zhiqin Zhao
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Pengda Huang.

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and permissions

About this article

Cite this article

Huang, P., Pi, Y. & Zhao, Z. Weak GPS Signal Acquisition Algorithm Based on Chaotic Oscillator. EURASIP J. Adv. Signal Process. 2009, 862618 (2009). https://doi.org/10.1155/2009/862618

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1155/2009/862618

Keywords