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PORTABLE RADIOMETER/RADAR SYSTEM FOR REMOTE SENSING OF SOIL MOISTURE
PORTABLE RADIOMETER/RADAR SYSTEM FOR REMOTE SENSING OF SOIL MOISTURE
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机译:便携式辐射/雷达系统,用于土壤水分的遥感
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摘要
A portable radiometer/radar system to remote sense the absolute water contentof top soil (soilmoisture) on the basis of the brightness temperature of the soil andvegetation. The system is mountedon an airborne platform such as a UAV or airplane.The invention comprises a battery-powered microwave transceiver, a dual-polarized antenna mountedon a gimbal (a motor controlled antenna positioning system), a GPS receiverand inertial momentsystem to measure the orientation of the antennas in space. The gimbal is usedto compensate for pitch,roll, and yaw motions of the carrier platform as well as moving the beamfootprint to different locationsto cover a multitude of azimuth and Nadir angles during the flight.
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