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The recent several decades have witnessed more and more three-dimensional (3D) intersections in urban traffic infrastructure. Therefore, modeling road network in 3D space becomes an essential step in traffic study, visualization, traffic micro-simulation, etc. Unlike modeling planar road network in which roads could be simply represented by their centerlines, a 3D line-based road network model tends...
The sufficient and necessary condition of using the two-dimensional (2D) Fourier method for simulating SAR raw signals is given. Some important issues when implementing squint stripmap SAR echo simulation are discussed such as slow-time baseband conversion and circular interpolation. Simulation results for an artificial scene and an actual scene demonstrate its validity and effectiveness.
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