2 September 2004 X-band ISAR imagery of scale-model tactical targets using a wide-bandwidth 350-GHz compact range
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Abstract
The demand for high-resolution ISAR data on tactical targets at all radar bands has been growing steadily. Here we describe a new 350GHz compact range currently being constructed to acquire fully polarimetric X-band data using 1/35th scale models. ERADS currently operates compact ranges from X to W-band using 1/16th scale models. The addition of this new compact range using 1/35th scale models will permit the measurement of larger targets and the measurement of multiple targets arrangeed in a scene. It will also allow us to take advantage of teh large number of commercially available models at 1/35th scale. The 350GHz transceiver uses two high-stability optically pumped far-infrared lasers, microwave/laser 350GHz mixer side-band generation for frequency sweep, and a pair of waveguide mounted diode receivers for coherent integration. The 35GHz bandwidth at a center frequency of 350GHz will allow the X-band transceiver system to collect data with up to 6-inch down range resolution, with a round trip half power beam diameter corresponding to 60 feet. Tactical targets may be measured in free space or on various ground planes, which simulate different types of terrain. Compact range measurements of simple calibration objects have been performed and compared to theoretical results using computer code predictions. A correlation study of X-band data using field measurements, 1/35th scale models and 1/16th scale models is planned upon completion of compact range construction. Available results of the diagnostic testes and the correlation study will be presented.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Thomas M. Goyette, Jason C Dickinson, William J Gorveatt, Jerry Waldman, and William E Nixon "X-band ISAR imagery of scale-model tactical targets using a wide-bandwidth 350-GHz compact range", Proc. SPIE 5427, Algorithms for Synthetic Aperture Radar Imagery XI, (2 September 2004); doi: 10.1117/12.542429; https://doi.org/10.1117/12.542429
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