Adaptive Compressed Sensing Radar Oriented Toward Cognitive Detection in Dynamic Sparse Target Scene

Recently, the idea of compressed sensing (CS) has been used in radar system, and the concept of compressed sensing radar (CSR) has been proposed in which the target scene can be sparsely represented in the range-Doppler plane. With sufficiently incoherent transmission waveform, the target scene can...

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Bibliographic Details
Published in:IEEE transactions on signal processing 2012-04, Vol.60 (4), p.1718-1729
Main Authors: Zhang, Jindong, Zhu, Daiyin, Zhang, Gong
Format: Article
Language:English
Subjects:
Applied sciences
cognitive radar
Compressed
Compressed sensing
Compressed sensing radar (CSR)
cross correlation
Detection
Detection, estimation, filtering, equalization, prediction
Dynamical systems
Dynamics
Exact sciences and technology
Information, signal and communications theory
Mathematical analysis
optimization algorithm
Radar
Radar detection
Radar imaging
Radar systems
Receivers
Recovery
Sampling, quantization
Sensors
Signal and communications theory
Signal representation. Spectral analysis
Signal, noise
Sparse matrices
Telecommunications and information theory
Waveforms
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Summary:Recently, the idea of compressed sensing (CS) has been used in radar system, and the concept of compressed sensing radar (CSR) has been proposed in which the target scene can be sparsely represented in the range-Doppler plane. With sufficiently incoherent transmission waveform, the target scene can be reconstructed by the technique of CS. With the idea that the transmission waveform can adapt in response to the operational information in cognitive radar system, we propose the notion of adaptive compressed sensing radar (ACSR) whose transmission waveform and sensing matrix can be updated by the target scene information fed back by the recovery algorithm. The methods for optimizing the transmission waveform and sensing matrix separately and simultaneously are both presented to decrease the cross correlations between different target responses. The principle for an ACSR system to synthesize the transmission waveform and sensing matrix matched to the target scene is also investigated. This novel ACSR system offers more degrees of freedom than classical radar system and better recovery performance than the CSR system.
ISSN:1053-587X
1941-0476
DOI:10.1109/TSP.2012.2183127