The large antenna shared by radar and radiometer is the most prominent feature for the Soil Moisture Active Passive satellite. It operates like a satellite dish, only is much larger, where a reflector collects all of the radio waves and focuses them into the feed horn. The feed horn collects the echoes from the radar and the surface emissions from the ground and sends them to the radar and radiometer electronics for processing. The feed horn is a large cone visible on the outside of the spacecraft. The antenna reflector is a mesh antenna 6 meters (about 20 feet) in diameter.
The large antenna shared by radar and radiometer is the most prominent feature for the Soil Moisture Active Passive satellite. It operates like a satellite dish, only is much larger, where a reflector collects all of the radio waves and focuses them into the feed horn. The feed horn collects the echoes from the radar and the surface emissions from the ground and sends them to the radar and radiometer electronics for processing. The feed horn is a large cone visible on the outside of the spacecraft. The antenna reflector is a mesh antenna 6 meters (about 20 feet) in diameter. NASA Jet Propulsion Laboratory
The large antenna shared by radar and radiometer is the most prominent feature for the Soil Moisture Active Passive satellite. It operates like a satellite dish, only is much larger, where a reflector collects all of the radio waves and focuses them into the feed horn. The feed horn collects the echoes from the radar and the surface emissions from the ground and sends them to the radar and radiometer electronics for processing. The feed horn is a large cone visible on the outside of the spacecraft. The antenna reflector is a mesh antenna 6 meters (about 20 feet) in diameter. NASA Jet Propulsion Laboratory

Satellite mission poised to help farmers and water managers, NASA says

January 28, 2015 09:11 PM

UPDATED January 31, 2015 10:45 AM

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