Steerable Null Antenna Behavior in Terrain with Heavy Vegetation: A Computer Simulation

摘要

The two element steerable null antenna behavior in areas with rapid fading such as terrain with heavy vegetation is discussed. The fading pattern in such areas may be statistically characterized as Nakagami-Rice distributed in the lowest part of the VHF region, e.g., 30-50 MHz, and Rayleigh distributed above about 60 MHz. Considerable wave components arrive at the antennas from all directions by means of a scattering mechanism. The steerable null antenna processor (SNAP) is assumed to be ideal with some kind of phase and amplitude adjustment.