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In this paper the author propose a fast and efficient algorithm for multilook K-distribution parameter estimation. It is base on the approximate inverse function of log(ν) − ψ(ν), which is calculated by the least squares nonlinear curve fitting technique. Numerical experiments demonstrate the efficiency and accuracy of this new algorithm.
Theory and application study of Frequency Modulated Continuous Wave(FMCW) Synthetic Aperture Radar(SAR) imaging has gained more attention nowadays. Based on Range Doppler Algorithm(RDA), signal characteristic of FMCW SAR was analyzed in details, and aiming at the azimuth matched filtering problem a method named Scene Range Cell Covering Algorithm(SRCCA) was proposed. Simulation results indicate that...
Synthetic Aperture Radar (SAR) is important method in ocean remote observation, most ocean surface in SAR image have specific texture character. Ocean Wave, internal wave, ocean eddy, island have different character in SAR image, so is power spectrum. We get power spectrum character of different texture character in SAR image by Fourier transform, and conclude the specific power spectrum character...
The joint estimation of frequency and 2D-DOA of signal by Two L-Shape Arrays(TLSA) based on Propagator Method(PM) was proposed. According to the feature of TLSA, 2D-DOA can be estimated effectively, and through analysis of PM, the estimation of frequency can also be obtained. The pairing of frequency and 2D-DOA can be realized automatically. Simulation results indicate that the proposed method takes...
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