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Advances in Digital Calibration Techniques Enabling Real-Time Beamforming SweepSAR ArchitecturesReal-time digital beamforming, combined with lightweight, large aperture reflectors, enable SweepSAR architectures, which promise significant increases in instrument capability for solid earth and biomass remote sensing. These new instrument concepts require new methods for calibrating the multiple channels, which are combined on-board, in real-time. The benefit of this effort is that it enables a new class of lightweight radar architecture, Digital Beamforming with SweepSAR, providing significantly larger swath coverage than conventional SAR architectures for reduced mass and cost. This paper will review the on-going development of the digital calibration architecture for digital beamforming radar instrument, such as the proposed Earth Radar Mission's DESDynI (Deformation, Ecosystem Structure, and Dynamics of Ice) instrument. This proposed instrument's baseline design employs SweepSAR digital beamforming and requires digital calibration. We will review the overall concepts and status of the system architecture, algorithm development, and the digital calibration testbed currently being developed. We will present results from a preliminary hardware demonstration. We will also discuss the challenges and opportunities specific to this novel architecture.
Document ID
20150007757
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Hoffman, James P.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Perkovic, Dragana
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Ghaemi, Hirad
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Horst, Stephen
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Shaffer, Scott
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Veilleux, Louise
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 8, 2015
Publication Date
March 2, 2013
Subject Category
Communications And Radar
Meeting Information
Meeting: IEEE Aerospace Conference
Location: Big Sky, MT
Country: United States
Start Date: March 2, 2013
End Date: March 9, 2013
Sponsors: Institute of Electrical and Electronics Engineers
Distribution Limits
Public
Copyright
Other
Keywords
TR (Transmit/Receive)
Earth Science Decadal Plan
DSI (DESDynI SAR Instrument)

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