TY - GEN
T1 - High sensitivity GPS acquisition algorithm based on code doppler compensation
AU - Jiao, Xiao Peng
AU - Wang, Ju
AU - Li, Xiang
PY - 2012
Y1 - 2012
N2 - To extend the coherent integration time M, and to increase the non-coherent integration times N is an effective way for weak GPS signal acquisition. But with the increasing of the integration time, the phase sliding caused by code doppler is more obvious, and it will cause a lot of non-coherent integration loss, which affects acquisition performance. This paper presents a new algorithm based on code doppler picking points compensation. According to the prediction of phase slip time, new algorithm can make several times non-coherent integration results accumulate to the same code phase. The acquisition sensitivity is improved. Simulation results show that, when M = 10, N = 20, new algorithm can capture signal whose C/N0 is as low as 20dB-Hz.
AB - To extend the coherent integration time M, and to increase the non-coherent integration times N is an effective way for weak GPS signal acquisition. But with the increasing of the integration time, the phase sliding caused by code doppler is more obvious, and it will cause a lot of non-coherent integration loss, which affects acquisition performance. This paper presents a new algorithm based on code doppler picking points compensation. According to the prediction of phase slip time, new algorithm can make several times non-coherent integration results accumulate to the same code phase. The acquisition sensitivity is improved. Simulation results show that, when M = 10, N = 20, new algorithm can capture signal whose C/N0 is as low as 20dB-Hz.
KW - Acquisition
KW - Code doppler
KW - High sensitivity
KW - Pick points
UR - http://www.scopus.com/inward/record.url?scp=84876488963&partnerID=8YFLogxK
U2 - 10.1109/ICoSP.2012.6491645
DO - 10.1109/ICoSP.2012.6491645
M3 - Conference contribution
AN - SCOPUS:84876488963
SN - 9781467321945
T3 - International Conference on Signal Processing Proceedings, ICSP
SP - 241
EP - 245
BT - ICSP 2012 - 2012 11th International Conference on Signal Processing, Proceedings
T2 - 2012 11th International Conference on Signal Processing, ICSP 2012
Y2 - 21 October 2012 through 25 October 2012
ER -