Effect of Cell Size on Radar Clutter Statistics
Abstract
The objective of this study is to investigate through computer simulation the effects of a change in cell size on signal statistics in backward, forward and perpendicular directions of observation when a plane wave is incident at 70 degrees from the vertical on a randomly rough surface. It is found that in the backward direction the signal has a Weibull-like distribution and its mean and variance both decrease with an increase in the cell size starting with a cell less than 1.5 of a wavelength in dimension. When the cell size is around 7.3 lambda x 2.5 lambda, (lambda is the electric wavelength), the signal distribution approaches Rayleigh. In forward scattering the signal distribution is found to be closely Gaussian, and as cell size increases, the mean increases as expected. Variance increases also, but only slightly. In the perpendicular direction the signal distribution is again closely Weilbull. Its mean and variance did not show any particular trends with a change in cell size. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1990
- Accession Number
- ADA231897
Entities
People
- Adrian K. Fung
Organizations
- Georgia Tech Research Corporation