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- W1486128275 abstract "In this paper, we examine the sparsity-based time-frequency signal representation (TFSR) of randomly thinned nonstationary signals in a multi-sensor platform to yield improved performance with reduced number of samples in each sensor. The property that different sensors share identical auto-term time-frequency regions renders the TFSR a group sparse reconstruction problem, which is effectively solved using the compressive sensing techniques for high-fidelity TFSR reconstruction. We exploit the adaptive optimal kernel (AOK) to effectively preserve signal auto-terms and mitigate cross-terms. High level of noise and artifacts due to missing samples, however, may render AOK ineffective if designed for each sensor separately. We develop a robust multi-sensor AOK design based on data fusion across all sensors so as to enhance the signal auto-terms while effectively mitigating artifacts, cross-terms, and noise. The superior performance of the proposed multi-sensor AOK design is demonstrated through the comparison with its single-antenna counterpart and data-independent kernels." @default.
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- W1486128275 date "2015-05-01" @default.
- W1486128275 modified "2023-09-27" @default.
- W1486128275 title "Multi-sensor kernel design for time-frequency analysis of sparsely sampled nonstationary signals" @default.
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- W1486128275 doi "https://doi.org/10.1109/radar.2015.7131122" @default.
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