دورية أكاديمية
Waveform Design for Synthetic-Aperture Radar Imaging through Dispersive Media
| العنوان: | Waveform Design for Synthetic-Aperture Radar Imaging through Dispersive Media |
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| المؤلفون: | Varslot, Trond, Morales, Hector J, Cheney, Margaret |
| المصدر: | SIAM Journal on Applied Mathematics |
| بيانات النشر: | Society for Industrial and Applied Mathematics |
| المجموعة: | Australian National University: ANU Digital Collections |
| مصطلحات موضوعية: | Keywords: Dispersive media, Dispersive medium, Dispersive wave propagation, Low signal-to-noise ratio, Pulse echoes, Reconstructed image, Scalar model, Single scattering, Wave forms, Waveform designs, Design, Dispersion (waves), Imaging systems, Optimization, Signa Dispersive wave propagation, Imaging, Pulse-echo imaging, Synthetic aperture radar, Waveform design |
| الوصف: | In this paper we analyze the problem of optimal waveform design for syntheticapertureradar (SAR) imaging through a dispersive medium. We use a scalar model for wave propagation, together with the single-scattering approximation, and we assume that measurements arepolluted with thermal noise whose statistics are known. For image formation, we use a filtered backprojectionalgorithm in which the filter is determined by knowledge of the power-spectral densities of the scene and noise. In this framework, we derive a waveform which is optimal in the sense of minimizing the mean-square-error of the reconstructed image. We show the results of simulationsfor the example of imaging point scatterers embedded in a certain dispersive background. We showthat for low signal-to-noise ratios, the optimal waveform resembles what is known as a precursor: awave that is generated from propagating ultrawideband waveforms through the medium. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| تدمد: | 0036-1399 |
| العلاقة: | http://hdl.handle.net/1885/60009Test; https://openresearch-repository.anu.edu.au/bitstream/1885/60009/5/2011_Varslot_waveform_fesign_for_synthetic.pdf.jpgTest; https://openresearch-repository.anu.edu.au/bitstream/1885/60009/7/01_Varslot_Waveform_Design_for_2011.pdf.jpgTest |
| DOI: | 10.1137/100802438 |
| الإتاحة: | https://doi.org/10.1137/100802438Test http://hdl.handle.net/1885/60009Test https://openresearch-repository.anu.edu.au/bitstream/1885/60009/5/2011_Varslot_waveform_fesign_for_synthetic.pdf.jpgTest https://openresearch-repository.anu.edu.au/bitstream/1885/60009/7/01_Varslot_Waveform_Design_for_2011.pdf.jpgTest |
| رقم الانضمام: | edsbas.B9D9F1BF |
| قاعدة البيانات: | BASE |
| تدمد: | 00361399 |
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| DOI: | 10.1137/100802438 |