Pulsed plane wave analytic solutions for generic shapes and the validation of Maxwell's equations solversGeneric shapes are subjected to pulsed plane waves of arbitrary shape. The resulting scattered electromagnetic fields are determined analytically. These fields are then computed efficiently at field locations for which numerically determined EM fields are required. Of particular interest are the pulsed waveform shapes typically utilized by radar systems. The results can be used to validate the accuracy of finite difference time domain Maxwell's equations solvers. A two-dimensional solver which is second- and fourth-order accurate in space and fourth-order accurate in time is examined. Dielectric media properties are modeled by a ramping technique which simplifies the associated gridding of body shapes. The attributes of the ramping technique are evaluated by comparison with the analytic solutions.
Document ID
19920039514
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Yarrow, Maurice (NASA Ames Research Center Moffett Field, CA, United States)
Vastano, John A. (NASA Ames Research Center Moffett Field, CA, United States)
Lomax, Harvard (NASA Ames Research Center Moffett Field, CA, United States)