10 October 2008 An approach to enhanced fidelity of airborne radar site-specific simulation
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Abstract
Geographical information systems (GIS) have been the base for radar ground echo simulations for many years. Along with digital elevation model (DEM), present GIS contain characteristics of terrain. This paper proposes a computationally sensible simulation procedure to produce realistic radar terrain signatures in a form of raw data of airborne pulse Doppler radar. For backscattering simulation, the model of the ground is based on DEM and built with point-form backscattering objects. In addition to the usual DEM utilization for xyz coordinates and shadowed region calculation, we assume that each data point in GIS describes several scatterers in reality. Approaching the ground truth, we distribute individual scatterers with adjustable attributes to produce authentic response of areas such as sea, fields, forests, and built-up areas. This paper illustrates the approach through an airborne side-looking synthetic aperture radar (SAR) simulation. The results prove the enhanced fidelity with realistic SAR image features.
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Ville Väisänen, Juha Jylhä, Ilkka Venäläinen, Juho Vihonen, Henna Perälä, Ari Visa, "An approach to enhanced fidelity of airborne radar site-specific simulation", Proc. SPIE 7110, Remote Sensing for Environmental Monitoring, GIS Applications, and Geology VIII, 71100J (10 October 2008); doi: 10.1117/12.800216; https://doi.org/10.1117/12.800216
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