Results from the 1993 LOGAN (Low Grazing ANgle) radar experiment

During July and August of 1993, a low grazing angle (LOGAN) radar experiment was conducted from the Chesapeake Light Tower which is located on the continental shelf approximately 24 km east of Cape Henry, Virginia. High resolution (0.15 m) and calibrated radar measurements were made at low grazing angles of 0.5° to 20° over a spectrum of frequencies (0.35 to 18.0 GHz) and for polarizations of VV, VH, HH and HV. The radar measurements were supported with environmental measurements from the NOAA C-MAN weather station, a meteorological buoy, a wave buoy, a thermistor chain, a current meter, and video and photographic records of the sea surface. Measurements were made over a variety of sea conditions, including a sea surface with both natural slicks and a man made slick. Various approaches were used to investigate multi-path and glistening zone processes. The LOGAN measurements are to be used to evaluate hypotheses pertaining to sea surface backscatter and the doppler associated with backscatter observed at low grazing angles