Approximating SIR-B response characteristics and estimating wave height and wavelength for ocean imageryNASA Space Shuttle Challenger SIR-B ocean scenes are used to derive directional wave spectra for which speckle noise is modeled as a function of Rayleigh random phase coherence downrange and Poisson random amplitude errors inherent in the Doppler measurement of along-track position. A Fourier filter that preserves SIR-B image phase relations is used to correct the stationary and dynamic response characteristics of the remote sensor and scene correlator, as well as to subtract an estimate of the speckle noise component. A two-dimensional map of sea surface elevation is obtained after the filtered image is corrected for both random and deterministic motions.
Document ID
19870066014
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Tilley, David G. (Johns Hopkins University Laurel, MD, United States)