Research on fast acquisition algorithm of spread spectrum signal based on PMF-FFT

TY – GEN

T1 – Research on fast acquisition algorithm of spread spectrum signal based on PMF-FFT

AU – Sun, Boning

AU – Zheng, Zhe

AU – Zhou, Yang

AU – Zhang, Ruoshi

N1 – Publisher Copyright:
© 2022 IEEE.

PY – 2022

Y1 – 2022

N2 – Aiming at the attenuation problem when doppler frequency shift is large, pmF-FFT algorithm based on matched filter is introduced to compensate the attenuation of matched filter through FFT method, but at the same time, PMF-FFT algorithm also introduces scallop loss due to the introduction of FFT operation. In this paper, the mathematical model of PMF-FFT algorithm is given, the basic principle of acquisition is analyzed, and the characteristics of amplitude-frequency response are deduced and analyzed mathematically. Aiming at the selection of partial matched filter length in the design of PMF-FFT capture system, this paper studies the influence of the change of partial matched filter length on several performance indexes, and gives the selection criteria of partial matched filter length. In this paper, the scallop and related losses in PMF-FFT algorithm are compensated in two ways: adding zero and adding window. Finally, the performance of the improved algorithm is analyzed, and it is proved that the improved algorithm has better performance than the original algorithm. At the same time, several performance indexes are proposed, which proves the superiority of the improved algorithm.

AB – Aiming at the attenuation problem when doppler frequency shift is large, pmF-FFT algorithm based on matched filter is introduced to compensate the attenuation of matched filter through FFT method, but at the same time, PMF-FFT algorithm also introduces scallop loss due to the introduction of FFT operation. In this paper, the mathematical model of PMF-FFT algorithm is given, the basic principle of acquisition is analyzed, and the characteristics of amplitude-frequency response are deduced and analyzed mathematically. Aiming at the selection of partial matched filter length in the design of PMF-FFT capture system, this paper studies the influence of the change of partial matched filter length on several performance indexes, and gives the selection criteria of partial matched filter length. In this paper, the scallop and related losses in PMF-FFT algorithm are compensated in two ways: adding zero and adding window. Finally, the performance of the improved algorithm is analyzed, and it is proved that the improved algorithm has better performance than the original algorithm. At the same time, several performance indexes are proposed, which proves the superiority of the improved algorithm.

KW – FFT

KW – Hanning window

KW – PMF

KW – detection probability

KW – zero padding

UR – www.scopus.com/inward/record.url?scp=85146119015&partnerID=8YFLogxK

U2 – 10.1109/CCISP55629.2022.9974243

DO – 10.1109/CCISP55629.2022.9974243

M3 – Conference contribution

AN – SCOPUS:85146119015

T3 – Proceedings – 2022 7th International Conference on Communication, Image and Signal Processing, CCISP 2022

SP – 291

EP – 296

BT – Proceedings – 2022 7th International Conference on Communication, Image and Signal Processing, CCISP 2022

A2 – Zhang, Jing

PB – Institute of Electrical and Electronics Engineers Inc.

T2 – 7th International Conference on Communication, Image and Signal Processing, CCISP 2022

Y2 – 18 November 2022 through 20 November 2022

ER –