TY - GEN
T1 - Coherent accumulation range defuzzification algorithm based on pseudo-code inter-pulse phase modulation
AU - Zhang, Shize
AU - Chen, Defeng
AU - Zhang, Wei
AU - Guo, Xin
N1 - Publisher Copyright:
© 2023 SPIE. All rights reserved.
PY - 2023
Y1 - 2023
N2 - Ground-based space target pulse measurement radar searches and captures medium-And high-orbit space targets, and there are some problems in target radial range measurement, such as range ambiguity and low echo signal-To-noise ratio. In order to solve the above problems, a coherent accumulation range deblurring method based on pseudo code pulse phase modulation is proposed. This method makes full use of the good autocorrelation of m-sequence. Firstly, the transmitted pulse is modulated by m-sequence pseudo-code, and then the collected echo signal is compensated by pseudo-code phase modulation and space target motion compensation. When the phase compensation reference signal constructed by m-sequence is completely matched with the received phase modulated echo signal of m-sequence, the space target motion compensation and coherent accumulation are carried out to realize the convergence of signal energy. In order to determine the range ambiguity, all possible ambiguities are processed by coherent accumulation of sliding window. By comparing the accumulated signal energy in the accumulated sliding window, the cumulative sliding window movement number corresponding to the maximum energy is obtained, and the target range ambiguity can be solved.
AB - Ground-based space target pulse measurement radar searches and captures medium-And high-orbit space targets, and there are some problems in target radial range measurement, such as range ambiguity and low echo signal-To-noise ratio. In order to solve the above problems, a coherent accumulation range deblurring method based on pseudo code pulse phase modulation is proposed. This method makes full use of the good autocorrelation of m-sequence. Firstly, the transmitted pulse is modulated by m-sequence pseudo-code, and then the collected echo signal is compensated by pseudo-code phase modulation and space target motion compensation. When the phase compensation reference signal constructed by m-sequence is completely matched with the received phase modulated echo signal of m-sequence, the space target motion compensation and coherent accumulation are carried out to realize the convergence of signal energy. In order to determine the range ambiguity, all possible ambiguities are processed by coherent accumulation of sliding window. By comparing the accumulated signal energy in the accumulated sliding window, the cumulative sliding window movement number corresponding to the maximum energy is obtained, and the target range ambiguity can be solved.
KW - Coherent accumulation
KW - M-sequence
KW - Pulse measurement radar
KW - Pulse phase modulation
KW - Range ambiguity resolution
UR - http://www.scopus.com/inward/record.url?scp=85170642742&partnerID=8YFLogxK
U2 - 10.1117/12.2680163
DO - 10.1117/12.2680163
M3 - Conference contribution
AN - SCOPUS:85170642742
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - International Conference on Intelligent Systems, Communications, and Computer Networks, ISCCN 2023
A2 - Liu, Xiaogang
A2 - Wang, Lin
PB - SPIE
T2 - 2023 International Conference on Intelligent Systems, Communications, and Computer Networks, ISCCN 2023
Y2 - 24 February 2023 through 26 February 2023
ER -