Sliding Correlation Acquisition Method Based on SNR Control
Zhao Zhi-yua · Science Technology and Engineering · 2013
As the acquiring SNR is time varing in complex electromagnetism environment,a sliding correlation acquition method based on SNR control is presented.Based on the performance analysis of the sliding correlation method,an adaptive scheme was considered to be constructed which achieved the goal to set the time of integral in SNR control,how did the parameters affect the performance of acquisition was studied as well.Simulations show that the proposed method was effective which could reduce the mean code acquisition time by 50% largest when SNR- 3 dB according to different integration time,the method meet the design requirements of acquisition properties under the SNR change environment.