The effect of range-to-velocity ratio on simulated SAR images of ocean wind waves

Journal Article · Fri Jan 01 04:00:00 EST 1993 · IEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/36.210471· OSTI ID:6529791

West, J C ^[1]

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1. Oklahoma State Univ., Stillwater (United States)

Synthetic-aperture-radar (SAR) imaging of locally wind-generated ocean waves is simulated using the subwindowing technique. Several SAR range-to-velocity ratios (R/V) are used. Coherence is maintained throughout the imaging process, so the final image spectra include the noise resulting from phase-interference fading. Maximum spectral signal-to-noise ratio (SNR) is achieved with an R/V that maximizes velocity bunching modulation through imaging nonlinearities. Although the azimuthal shift of the spectral peak can be lessened by utilizing a lower R/V, the maximum wave number at which the signal exceeds the spectral noise does not change significantly, and the resulting decrease in overall S/N would likely make spectral extraction more difficult.

• OSTI ID: 6529791
• Journal Information: IEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers); (United States) Vol. 31:1; ISSN IGRSD2; ISSN 0196-2892
• Country of Publication: United States
• Language: English

Related Subjects

440800 -- Miscellaneous Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
54 ENVIRONMENTAL SCIENCES
540310* -- Environment
Aquatic-- Basic Studies-- (1990-)
COMPUTER GRAPHICS
COMPUTERIZED SIMULATION
GRAVITY WAVES
IMAGE PROCESSING
MEASURING INSTRUMENTS
PROCESSING
RADAR
RANGE FINDERS
REMOTE SENSING
SEAS
SIMULATION
SURFACE WATERS
SYNTHETIC-APERTURE RADAR
WATER WAVES