Journal of Systems Engineering and Electronics ›› 2010, Vol. 21 ›› Issue (1): 16-19.doi: 10.3969/j.issn.1004-4132.2010.01.003

• ELECTRONICS TECHNOLOGY • Previous Articles     Next Articles

Design of an anti-jamming GPS receiver based on orthogonal projection method

Youguo Hou1,2,∗, Wei Guo1, and Xiaozhang Jin1   

  1. 1. National Key Lab of Communication, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China;
    2. Nanchang Institute of Technology, Nanchang 330099, P. R. China
  • Online:2010-02-26 Published:2010-01-03
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (60472052; 10577007), the Program for New Century Excellent Talents in University (2004), and the National Key Lab Foundation of National Anti-Interference Communication Technology Laboratory.

Abstract:

Code delay and Doppler shifted frequency could not be captured by using the conventional GPS receiver in strong interference environments because the received GPS signals which traveled a long distance are very weak. An anti-jamming GPS receiver is proposed. The interferences in the received signals are cancelled by using subspace projecting technique, and the resulting interference-free signals are processed by a weight vector which
maximizes the signal-to-noise ratio. Simulation is conducted, and the results show that the method is valid.