Fast algorithm for non-uniformly sampled signal spectrum reconstruction
| Autor: | Zhimin Zhang, Zhenqian Zhu, Yu Wang |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Synthetic aperture radar
Sequence Mathematical optimization Transformation matrix Sampling (signal processing) Channel (digital image) Spectrum (functional analysis) ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Nonuniform sampling Reconstruction algorithm Electrical and Electronic Engineering Algorithm Mathematics |
| Zdroj: | Journal of Electronics (China). 30:231-236 |
| ISSN: | 1993-0615 0217-9822 |
| DOI: | 10.1007/s11767-013-3039-9 |
| Popis: | In this paper, a fast algorithm to reconstruct the spectrum of non-uniformly sampled signals is proposed. Compared with the original algorithm, the fast algorithm has a higher computational efficiency, especially when sampling sequence is long. Particularly, a transformation matrix is built, and the reconstructed spectrum is perfectly synthesized from the spectrum of every sampling channel. The fast algorithm has solved efficiency issues of spectrum reconstruction algorithm, and making it possible for the actual application of spectrum reconstruction algorithm in multi-channel Synthetic Aperture Radar (SAR). |
| Databáze: | OpenAIRE |
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