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Ka-band Digitally Beamformed Airborne Radar Using SweepSAR Technique
| Content Provider | Semantic Scholar |
|---|---|
| Author | Sadowy, Gregory A. Chuang, Chung-Lun Ghaemi, Hirad Heavey, Brandon Lin, Lung-Sheng Quaddus, Momin |
| Copyright Year | 2012 |
| Abstract | Ka-band Digitally Beamformed Airborne Radar Using SweepSAR Technique 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. This work was done by Gregory A. Sadowy, Chung-Lun Chuang, Hirad Ghaemi, Brandon A. Heavey, Lung-Sheng S. Lin, and Momin Quddus of Caltech for NASA’s Jet Propulsion Laboratory. Further information is contained in a TSP (see page 1). NPO-48376 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20130009384.pdf |
| Alternate Webpage(s) | https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20130009382.pdf |
| Alternate Webpage(s) | https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20130009399.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
