A small additional loss for radar range calculations at low grazing angles is described. This loss results because the variation in atmospheric refraction versus altitude makes the atmosphere act like a lens, causing thinning of radar signal energy to and from the target, independent of frequency. The magnitude of loss is derived and is plotted versus grazing angle and range. The maximum two-way loss, occurring at zero degrees grazing angle and a range well beyond the atmosphere, is 2.9 dB.
Atmospheric Lens Effect; Another Loss for the Radar Range Equation
IEEE Transactions on Aerospace and Electronic Systems ; AES-9 , 1 ; 51-54
1973-01-01
1371135 byte
Article (Journal)
Electronic Resource
English
Atmospheric loss considerations in radar range equations
Tema Archive | 1989
|Lens-Effect Loss for Distributed Targets
IEEE | 1987
|Another Technique For Calibration Of Polarimetric Radar
NTRS | 1992
|