Volume 37 Issue 12
Dec.  2012
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Wen Xiaojie, Zhang Yanzhong, Shao Dingrong, et al. Novel rapid acquisition algorithm for hybrid DS/FH spread spectrum systems[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(12): 1504-1509. (in Chinese)
Citation: Wen Xiaojie, Zhang Yanzhong, Shao Dingrong, et al. Novel rapid acquisition algorithm for hybrid DS/FH spread spectrum systems[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(12): 1504-1509. (in Chinese)

Novel rapid acquisition algorithm for hybrid DS/FH spread spectrum systems

  • Received Date: 21 Jul 2010
  • Publish Date: 30 Dec 2012
  • To improve the mean acquisition time performance of hybrid DS/FH spread spectrum systems, a rapid acquisition algorithm based on alterable frequency hopping rate was proposed. The unaligned states frequencies were excluded to fast decrease mean acquisition time, while the acquisition was declared after adequate verification to decrease false alarm probability. The closed form expression of the mean acquisition time was obtained with the state diagram in additive Gaussian noise channel and typical jamming environment, and the probabilities of detection, missing, and false alarm were derived. The simulation results show that, in the circumstance of additive Gaussian noise channel, the mean acquisition time with the optimal threshold is decreased almost 1/4 of the one using the tradition fast scanning method and the new algorithm is more robust under jamming.

     

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