NDLI: Ka-band digitally beamformed airborne radar using sweepsar technique

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Ka-band digitally beamformed airborne radar using sweepsar technique

Content Provider	NASA Technical Reports Server (NTRS)
Author	Quaddus, Momin Sadowy, Gregory A. Ghaemi, Hirad Heavey, Brandon A. Chuang, Chung-Lun Lin, Lung-Sheng S.
Copyright Year	2012
Description	A paper describes a frequency-scaled SweepSAR demonstration that operates at Ka-Band (35.6 GHz), and closely approximates the DESDynl mission antenna geometry, scaled by 28. The concept relies on the SweepSAR measurement technique. An array of digital receivers captures waveforms from a multiplicity of elements. These are combined using digital beamforming in elevation and SAR processing to produce imagery. Ka-band (35.6 GHz) airborne SweepSAR using array-fed reflector and digital beamforming features eight simultaneous receive beams generated by a 40-cm offset-fed reflector and eight-element active array feed, and eight digital receiver channels with all raw data recorded and later used for beamforming. Illumination of the swath is accomplished using a slotted-waveguide antenna radiating 250 W peak power. This experiment has been used to demonstrate digital beamforming SweepSAR systems.
File Size	141529
Page Count	1
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20130009395
Archival Resource Key	ark:/13960/t3sv2kj67
Language	English
Publisher Date	2012-12-01
Access Restriction	Open
Subject Keyword	Man/system Technology And Life Support Extremely High Frequencies Beamforming Reflectors Slot Antennas Digital Systems Airborne Radar Waveguide Antennas Radar Imagery Synthetic Aperture Radar Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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