Effect of ambiguities on SAR picture qualityThe degradation of picture quality in a high-resolution, large-swath SAR mapping system caused by speckle, additive white Gaussian noise and range and azimuthal ambiguities occurring because of the nonfinite antenna pattern produced by a square aperture antenna was studied and simulated. The effect of the azimuth antenna pattern was accounted for by calculating the azimuth ambiguity function. Range ambiguities were accounted for by adding, to each pixel of interest, appropriate pixels at a range separation corresponding to one pulse repetition period, but attenuated by the antenna pattern. It is concluded that azimuth ambiguities do not cause any noticeable degradation (for large time bandwidth product systems, at least) but range ambiguities might.
Document ID
19790031719
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Korwar, V. N. (California Institute of Technology Pasadena, Calif., United States)
Lipes, R. G. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena Calif., United States)