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详细说明： 关于压缩感知的外国文献。是外国人写的，Abstract—In this paper we present a complete (hardware/ software) sub-Nyquist rate ( 13) wideband signal acquisition chain capable of acquiring radar pulseparametersin an instantaneousbandwidth spanning 100 MHz–2.5 GHz with the equivalent of8effectivenumberofbits(ENOB) digitizing performance. The approach is based on the alternative sensing-paradigm of compressed sensing (CS). The hardware platform features a fully-integrated CS receiver architecture named the random-modulation preintegrator (RMPI) fabricated in Northrop Grumman’s 450 nm InP HBT bipolar technology. The software back-end consists of a novel CS parameter recovery algorithm which extracts informationabout the signal without performing full time-domain signal reconstruction. This approach significantly reduces the computational overhead involved in retrievingdesired information which demonstrates an avenue toward employing CS techniques in power-constrained real-time applications. The developed techniques are validated on CS samplesphysically measuredby the fabricated RMPI and measurement results are presented. The parameter estimation algorithms are described in detail and a complete description of the physical hardware is given. ...展开收缩
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