The multiresolution time-domain (MRTD) algorithm is applied to the problem of general two-dimensional electromagnetic scattering. A Haar wavelet expansion is utilized. A parallel between Haar MRTD and the classic Yee finite difference time-domain (FDTD) algorithm is discussed, and results of simulations on canonical targets are shown for comparison. We focus on the incident-field implementation...

Challenges:  Algorithm Development  Non-ideal in-band filtering and strong adjacent-band primary users introduce in-band interfering power  Increases estimation error  Increases probability of false-alarm  Decreases probability of false-alarm  Chip Implementation  Wideband sensing chip requires high sampling rate  Power efficiency issue  Large dynamic range signal requires large WL  A...