Physical scale modeling of VHF/UHF SAR collection geometries
- Resource Type
- Conference
- Authors
- Beaudoin, C.; Gatesman, A.; Clinard, M.; Waldman, J.; Giles, R.; Nixon, W.
- Source
- Proceedings of the 2004 IEEE Radar Conference (IEEE Cat. No.04CH37509) Radar conference Radar Conference, 2004. Proceedings of the IEEE. :508-513 2004
- Subject
- Fields, Waves and Electromagnetics
Aerospace
Components, Circuits, Devices and Systems
Solid modeling
Geometry
Radar antennas
Focusing
Radar scattering
Azimuth
Radar imaging
Aerospace simulation
Frequency
Instruments
- Language
A method of physically modeling a linear flight path SAR collection in a scale-model VHF/UHF ISAR facility is presented. Accurate modeling of a SAR's collection geometry is necessary if meaningful comparisons are to be made between scale-model and field imagery. The advantage of collecting data in a linear flight path geometry is that height-unlimited focusing of scatterers can be achieved. The technique utilizes precise orientation of the target's azimuth and elevation relative to the fixed radar antenna, thereby effectively simulating a linear flight path collection. The impact of such a collection at VHF/UHF frequencies is demonstrated by comparing linear flight path ISAR imagery with traditional fixed grazing angle ISAR imagery. Both simulated and instrumented imagery are presented.