Abstract: The character of radar clutter from a disturbed sea surface has been cited by many researchers to be dependent on both radar and environmental parameters. These include radar frequency, polarization, pulse width and grazing angle as well as relative sea state and wind direction. In particular, radar pulse width at low grazing angles determines whether dominant scattering features such as white caps are resolved and thus has a strong influence on the time varying nature of clutter return signals in individual range cells. The effect of radar resolution alone is difficult to determine experimentally because of the variable nature of the other parameters and the fact that most instrumentation radars have not been implemented to vary pulse width. This paper addresses the design and performance of two clutter measurement radar systems with variable resolution and presents initial sea clutter data taken on the Chesapeake Bay in Maryland. Radar pulse widths ranging from 0.20 microseconds to less than 0.3 nanoseconds were employed at a nominal center frequency of 10 GHz.!11
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