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Improved Absolute Radiometric Calibration of a UHF Airborne RadarThe AirMOSS airborne SAR operates at UHF and produces fully polarimetric imagery. The AirMOSS radar data are used to produce Root Zone Soil Moisture (RZSM) depth profiles. The absolute radiometric accuracy of the imagery, ideally of better than 0.5 dB, is key to retrieving RZSM, especially in wet soils where the backscatter as a function of soil moisture function tends to flatten out. In this paper we assess the absolute radiometric uncertainty in previously delivered data, describe a method to utilize Built In Test (BIT) data to improve the radiometric calibration, and evaluate the improvement from applying the method.
Document ID
20170007014
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Chapin, Elaine
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hawkins, Brian P.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Harcke, Leif
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hensley, Scott
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Lou, Yunling
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Michel, Thierry R.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Moreira, Laila
(Bradar Industria Sao Jose dos Campos, Brazil)
Muellerschoen, Ronald J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Shimada, Joanne G.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Tham, Kean W.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Tope, Michael C.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 1, 2017
Publication Date
May 10, 2015
Subject Category
Communications And Radar
Meeting Information
Meeting: IEEE International Radar Conference
Location: Arlington, VA
Country: United States
Start Date: May 10, 2015
End Date: May 15, 2015
Sponsors: Institute of Electrical and Electronics Engineers
Distribution Limits
Public
Copyright
Other
Keywords
radar calibration
synthetic aperture radar

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