NRL TERRAIN CLUTTER STUDY: PHASE 2
NAVAL RESEARCH LAB WASHINGTON DC
Pagination or Media Count:
The second and final phase of a terrain clutter study was completed at Naval Research Laboratory utilizing the Four-Frequency Radar System installed in a WV-2 Super Constellation aircraft, BuNo 128324. This system is capable of transmitting and receiving four frequencies P,X,L, and C consecutively with a choice of horizontal, vertical, and alternating polarizations. The returns are gated at a fixed range and analyzed in a digital computer. Absolute clutter measurements have been taken over several sites at angles of incidence from 5 degrees to 60 degrees. The parameter measured was the normalized radar cross section in terms of the median value of its probability distribution. Data were obtained for this parameter as a function of incident angle, transmitted and received polarization, and radar wavelength for a wide variety of terrain types such as desert, mountainous, urban, and water. A significant conclusion was that the wavelength dependence of the terrain clutter varies from n 0 for urban terrain to n 32 for marshes.
- Active and Passive Radar Detection and Equipment