Title :
Radiated pulses decay exponentially in materials in the far fields of antennas
Author_Institution :
Antenna Technol. Branch, Air Force Res. Lab./SNHA, Hanscom AFB, MA, USA
fDate :
7/4/2002 12:00:00 AM
Abstract :
There has been interest in using short-pulse radar to detect targets in lossy clutter. The analysis presented here shows that the energy and peak-power densities of pulses decay exponentially with depth in homogeneous, lossy, dispersive materials, provided the frequency bands of the pulses are separated from DC. Many numerical examples verify the analytical results
Keywords :
absorbing media; dispersive media; radar antennas; radar clutter; radar detection; radiowave propagation; antennas; far fields; homogeneous lossy dispersive materials; lossy clutter; peak-power densities; radiated pulses; short-pulse radar;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020482