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If the ultra-wideband high-power microwave (UWB-HPM) transmitting in the air with a breakdown threshold is lower than the field intensity of the pulse, it will cause the breakdown of background gas and generate plasma which varies rapidly in space and time. And the generated electrons will attenuate the field at the tail portion of the HPM. This erosion shortens the pulses and generates transmitted...
In this paper, the stability of the one dimensional (1D) finite-difference time-domain (FDTD) difference scheme for the high power microwave (HPM) atmosphere propagation model is analyzed. The derivation shows that the conventional Courant condition is still valid when the time step meets the constraint imposed by the collision frequency. Our conclusion confirms that the FDTD method is available in...
The finite difference time domain (FDTD) method for solving ionosphere propagation of microwave pulse will waste great time and memory. In this paper, the pseudo-spectral time domain (PSTD) algorithm is applied to simulate propagation of microwave pulse in each layer of ionosphere, which is used to solve the equations of cold plasma. Compared to the FDTD method, the PSTD algorithm is much efficiency...
A time-domain numerical method to achieve reconstruction of conductor cylinders was considered in this paper. And the obstacle is characterized by the discrete points. The electric field and magnetic field on the extrapolated boundary are solved by Time-Domain Finite Element Method (TD-FEM), and than the far-field value is obtained from it. Genetic Algorithm (GA) and real differential evolution strategy...
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