28 May 1993 Ultrawide-bandwidth polarimetric SAR imagery of foliage-obscured objects
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Proceedings Volume 1875, Ultrahigh Resolution Radar; (1993) https://doi.org/10.1117/12.145519
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States
Abstract
The Environmental Research Institute of Michigan (ERIM) has developed a unique ground- based, portable, synthetic aperture radar (SAR). This SAR images targets in their natural backgrounds without the expense of an airborne sensor and with higher performance (bandwidth, resolution) than existing airborne systems. A horizontal 36-foot long aluminum truss supports a rail and an antenna carriage, which is moved along the rail to allow synthetic aperture focusing. The system is fully-polarimetric and has collected data over the frequency band of 400 - 1300 MHz resulting in a nominal resolution of 0.17 m in range and 0.5 m in cross-range. Because the system is ground-based and images are in the near field, a traditional spotlight SAR processor is inadequate. ERIM has implemented a near-field SAR processor which transforms the data to the far-field by performing a Fourier transform in the azimuth direction. This is often referred to as a planewave decomposition and results in data sampled as if it were collected in the far-field. The final step is a traditional spotlight processor (resampling and two-dimensional Fourier transform) which is applied to the data to form the image.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dan R. Sheen, Dan R. Sheen, Susan C. Wei, Susan C. Wei, Terry B. Lewis, Terry B. Lewis, Stuart R. DeGraaf, Stuart R. DeGraaf, } "Ultrawide-bandwidth polarimetric SAR imagery of foliage-obscured objects", Proc. SPIE 1875, Ultrahigh Resolution Radar, (28 May 1993); doi: 10.1117/12.145519; https://doi.org/10.1117/12.145519
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