Removal of Mainbeam Jamming Signals With Dual-Compensation-Phase Coding Radar

This article investigates the removal of mainbeam jamming signals using a dual-compensation-phase coding (DC-PC) radar. At the transmitter, the waveforms are simultaneously encoded in both transmit channels and slow-time, utilizing a coding coefficient and intrapulse index. In the receiver, based on...

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Veröffentlicht in:IEEE transactions on aerospace and electronic systems Jg. 61; H. 2; S. 4343 - 4356
Hauptverfasser: Zhang, Xiang, Lan, Lan, Zhu, Shengqi, Liao, Guisheng, Li, Ximin
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York IEEE 01.04.2025
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Aerospace and electronic systems
Algorithms
Alternating optimization (AO)
Array signal processing
Beamforming
Coding
Compensation
Degeneration
Direction of arrival
Doppler effect
dual-compensation
Encoding
Indexes
Interference
Jamming
majorization–minimization (MM) algorithm
Optimization
phase coding (PC)
Radar
removal of mainbeam jamming signals
Signal to noise ratio
Simulation
Time lag
Vectors
Waveforms
ISSN:0018-9251, 1557-9603
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Zusammenfassung:This article investigates the removal of mainbeam jamming signals using a dual-compensation-phase coding (DC-PC) radar. At the transmitter, the waveforms are simultaneously encoded in both transmit channels and slow-time, utilizing a coding coefficient and intrapulse index. In the receiver, based on the phase differences caused by time delay between the false and true targets, a dual compensation method is proposed to identify false targets from the true one in the transmit spatial frequency dimension, which enables the removal of mainbeam deceptive jamming signals through transmit–receive 2-D beamforming. Furthermore, in order to mitigate the performance degeneration due to the existence of direction of arrival (DOA) mismatch, a constrained optimization problem is established with the aim of maximizing the signal-to-interference-plus-noise ratio (SINR) with respect to both the coding coefficient and intrapulse index. In this regard, the alternating optimization (AO) procedure is utilized to tackle the problem, resorting to the majorization–minimization (MM) and gradient descent (GD) algorithms. The performance of removing mainbeam jamming signals in DC-PC radar is compared with other radar frameworks in terms of the Capon spectra, output power, and output SINR. Simulation results verify the superiorities of the devised methods in DC-PC radar.
Bibliographie:ObjectType-Article-1
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ISSN:0018-9251
1557-9603
DOI:10.1109/TAES.2024.3501236