In this paper, we employ the centering theory in pronoun resolution from the semantic perspective. First, diverse semantic role features with regard to different predicates in a sentence are explored. Moreover, given ...
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The rapid development of the Web technology makes the Web mining become the focus of the current data mining, and the XML technology also becomes the standard of the data exchange on the Web. The paper introduces the ...
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As Magnetic Resonance Imaging (MRI) is an important technology of radiological evaluation and computeraided diagnosis, the accuracy of the MR image segmentation directly influences the validity of following processing...
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In this paper we have investigated the effects of acoustic feedback on multi-channel ANC system. The presence of strong acoustic feedback degrades the convergence speed of the ANC filters, and in worst case the multi-...
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The difficulties and possibilities connected to indoor positioning suggest using several sources of navigational information. Apart from the signalprocessing of the individual sources this gives rise to the need for ...
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This letter addresses the issues on performance degradation caused by channel estimation error of quasiorthogonal space-time block (QO-STBC) coded OFDM systems employing array processing decoder. The Least Square (LS)...
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Shape from focus (SFF) which uses a sequence of space-variantly defocused frames works under the constraint that there is 'no magnification' in the stack. In the presence of sensor damage and/or occlusions, th...
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Virtual network is an important approach to support multiple legacy applications running unmodified in distributed virtual computing environments. A virtual networking approach called VirNet is proposed in this paper....
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Focusing on the continuous wave spaceborne-airborne bistatic synthetic aperture radar (SAR) system where satellites of global navigation satellite system (GNSS) as transmitters and the airborne radar as the receiver, ...
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ISBN:
(纸本)9781849190107
Focusing on the continuous wave spaceborne-airborne bistatic synthetic aperture radar (SAR) system where satellites of global navigation satellite system (GNSS) as transmitters and the airborne radar as the receiver, we propose a fast numeric range migration algorithm (RMA). Firstly, based on the concept of instantaneous Doppler wavenumber, analytic formula of the point spread response in the spectral domain is developed for bistatic SAR(BiSAR) with unequal velocity and parallel trajectory constellation. Then, relying on a first-order Taylor expansion of the above formula with respect to the parameter called the sum of closest distances on the swath center, a bistatic RMA algorithm is proposed for BiSAR imaging. Simulation results have confirmed the effectiveness of the proposed novel approach.
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