![]() ![]() Scenes in which a new ice or nilas are present in appreciable amounts are subject to substantial errors in classification if static measures of Ka band radiometric brightness temperature alone are considered. New ice (excluding frazil) and nilas display brightness temperatures that overlap the range of temperatures characteristic of old ice and, to a lesser extent, young/first-year ice. Analysis of these data suggests that four classes of winter surfaces can be distinguished solely on the basis of 33.6- GHz brightness temperature: open water, frazil, old ice, and young/first-year ice. Hoover, Mervynĭuring March 1983 extensive high-quality airborne passive Ka band ( 33.6 GHz) microwave imagery and coincident high-resolution aerial photography were obtained of ice along a 378-km flight line in the Beaufort Sea. The satellite beacon antenna is configured as an offset-fed cutparaboloidal reflector.Ĭlassification of sea ice types with single- band ( 33.6 GHz) airborne passive microwave imageryĮppler, Duane T. The beacon uses a phased locked loop stabilized dielectric resonator oscillator and a solid-state power amplifier to achieve the desired output power. In this paper, the design of a beacon transmitter that will be flown as a hosted payload on a geostationary satellite to enable propagation experiments at Q-band (37 to 41 GHz) frequencies is presented. ![]() Q-Band (37 to 41 GHz) Satellite Beacon Architecture for RF Propagation Experiments The satellite beacon antenna is configured as an offset-fed cut-paraboloidal reflector. ![]() In this paper, the design of a beacon transmitter that will be flown as a hosted payload on a geostationary satellite to enable propagation experiments at Q-band (37-41 GHz) frequencies is presented. Q-Band (37-41 GHz) Satellite Beacon Architecture for RF Propagation Experiments ![]()
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