Frequency diversity for image enhancement
作者： Frederic L. Lizzi , Ernest J. Feleppa , Marek Elbaum
DOI:
关键词: Diversity scheme 、 Signal 、 Attenuation 、 Delta-sigma modulation 、 Amplitude 、 Speckle pattern 、 Digital signal processing 、 Weighting 、 Computer science 、 Optics
摘要: Methods for improving the availability of information derived from signals received an object irradiated with coherent pulses any form radiation that exhibits a wave nature are disclosed. A method reducing speckle derives separate component noncoherent signals, and combines these to improved composite signals. Weighting processing can be applied as function time, frequency, signal amplitude optimize reduction in all or critical part by compensating range frequency dependence attenuation scattering phenomena. In enhancing resolution, weighted processed, combined signals; then both methods, processed either analog digital domains hybrid analog/digital domains. The apparatus performing each also is
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