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21 June 2011 Quick signal detection and dynamic resource allocation scheme for ultra-wideband radar
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Abstract
A new scheme for sampling and detecting as well as reconstructing analog signals residing in a wide spectrum band through compressive sensing is proposed. By applying compressive sensing techniques, this scheme is able to detect signals quickly over very wide bandwidth. Unlike existing compressive sensing approaches which carry out the sampling and detection/reconstruction procedures separately, in this scheme, the sampling process and the detection/reconstruction process has close interaction. Once a new signal is detected, resources are allocated for further processing. Previously detected signals are then removed as interference to facilitate new signal detection. Hence, this scheme can quickly adapt to the variation of the environment. Moreover, it avoids the complex iterative optimization procedure in reconstruction and instead uses one step detection procedure to reaches real-time handling of signals. Simulation results show that it can closely track the spectrum change even when the signal is weak.
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Xiangming Kong and Ahmed Mohin "Quick signal detection and dynamic resource allocation scheme for ultra-wideband radar", Proc. SPIE 8021, Radar Sensor Technology XV, 802111 (21 June 2011); https://doi.org/10.1117/12.883228
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