TY - GEN
T1 - A Coherent Accumulation Resolving Range Ambiguity Algorithm Based on Chirp Rate Polarity Modulation with M-Sequence
AU - Jiang, Zhuo
AU - Chen, Defeng
AU - Wang, Chao
AU - Wang, Dongliang
AU - Guo, Xin
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Range ambiguity has always been an inherent problem in pulse instrumentation radar system. At present, the traditional resolving range ambiguity algorithm is generally based on the Remainder Theorem. However, when radar detects medium or high orbit space target, the signal-to-noise ratio of the radar echo is low because the space target is far away and its radar cross section is small. In this case, the efficiency of the traditional resolving range ambiguity algorithm is reduced and even the algorithm cannot be applied. Therefore, in order to solve the problem of range ambiguity in the condition of low SNR radar echo, a coherent accumulation resolving range ambiguity algorithm based on chirp rate polarity modulation with M-sequence is proposed. In this algorithm, the M-sequence is used to modulate the chirp rate polarity of radar transmitting signal (chirp signal). Then the radar echo signal is compressed by reference matching filtering. Finally, the sliding window coherent accumulation process is applied to resolving the radial range ambiguity of space target. The simulation experiment shows that the proposed algorithm can improve the resolving range ambiguity efficiently, which is especially suit for engineering application.
AB - Range ambiguity has always been an inherent problem in pulse instrumentation radar system. At present, the traditional resolving range ambiguity algorithm is generally based on the Remainder Theorem. However, when radar detects medium or high orbit space target, the signal-to-noise ratio of the radar echo is low because the space target is far away and its radar cross section is small. In this case, the efficiency of the traditional resolving range ambiguity algorithm is reduced and even the algorithm cannot be applied. Therefore, in order to solve the problem of range ambiguity in the condition of low SNR radar echo, a coherent accumulation resolving range ambiguity algorithm based on chirp rate polarity modulation with M-sequence is proposed. In this algorithm, the M-sequence is used to modulate the chirp rate polarity of radar transmitting signal (chirp signal). Then the radar echo signal is compressed by reference matching filtering. Finally, the sliding window coherent accumulation process is applied to resolving the radial range ambiguity of space target. The simulation experiment shows that the proposed algorithm can improve the resolving range ambiguity efficiently, which is especially suit for engineering application.
KW - M-sequence
KW - chirp rate polarity modulation
KW - coherent accumulation
KW - range ambiguity
UR - http://www.scopus.com/inward/record.url?scp=85147692546&partnerID=8YFLogxK
U2 - 10.1109/IMCEC55388.2022.10020022
DO - 10.1109/IMCEC55388.2022.10020022
M3 - Conference contribution
AN - SCOPUS:85147692546
T3 - IMCEC 2022 - IEEE 5th Advanced Information Management, Communicates, Electronic and Automation Control Conference
SP - 1111
EP - 1117
BT - IMCEC 2022 - IEEE 5th Advanced Information Management, Communicates, Electronic and Automation Control Conference
A2 - Xu, Bing
A2 - Xu, Bing
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 5th IEEE Advanced Information Management, Communicates, Electronic and Automation Control Conference, IMCEC 2022
Y2 - 16 December 2022 through 18 December 2022
ER -