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A dual-low-frequency radar for sub-canopy and deep soil-moisture measurements

Show simple item record Moller, D. en_US Rodriguez, E. en_US Moghadamm, M. en_US Hoffman, J. en_US 2004-09-17T19:00:07Z 2004-09-17T19:00:07Z 2003-03 en_US
dc.identifier.citation IEEE Aerospace Electronics Symposium en_US
dc.identifier.citation Big Sky, MT, USA en_US
dc.identifier.clearanceno 02-2681 en_US
dc.description.abstract Measurements of deep and sub-canopy soil moisture are critical in understanding the global water and carbon energy cycle, but are not presently available on a synoptic basis. In this paper, we discuss a proposed spaceborne dual-frequency (UHF and VHF) radar that can provide global & these key measurements. This system is polarimetric and the low transmit frequencies chosen for their penetration abilities necessitate a large antenna that has an aperture of approximately 30m by 11m at VHF, and 30m by 3m at UHF. We describe the mission concept, overall system design and performance characteristics, and discuss ongoing tasks to prototype key system components, and verify the retrieval algorithms. We are also developing a tower-based prototype radar system. This system will, through field observations, demonstrate the scientific effectiveness of the measurement concept and provide critical data for algorithm development. We provide details of the ground experimentation including issues unique to operating at the low-frequencies chosen for these systems. en_US
dc.format.extent 3521037 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.subject.other radar hazard detection en_US
dc.title A dual-low-frequency radar for sub-canopy and deep soil-moisture measurements en_US

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