Abstract :
To enhance the accuracy of propagation predictions for broadcasting and land mobile applications, a more accurate characterization of clutter loss and of environmental noise has been needed. A series of tests was performed to quantify the environmental RF noise levels associated with various types of ground clutter and to quantify the effects of ground clutter on RF propagation path loss. Tests were performed at 162, 460, and 860 MHz in four different localities in the United States. Each had very different land clutter, as characterized by the land use land cover (LULC) categories used in the United States. It was found that the numbers currently in use by industry for clutter loss are, in general, slightly less than the observed values. Both the clutter loss and noise results can be applied to system design
Keywords :
UHF radio propagation; VHF radio propagation; broadcasting; clutter; electric noise measurement; land mobile radio; loss measurement; noise pollution; 162 MHz; 460 MHz; 860 MHz; LULC categories; RF propagation path loss; UHF; USA; VHF; broadcasting; clutter losses; environmental RF noise levels; ground clutter; industry; land clutter; land mobile applications; land use land cover; propagation predictions; radiowave propagation; signal strength difference; system design; tests; Databases; Frequency measurement; Geologic measurements; Global Positioning System; Noise measurement; Performance evaluation; Propagation losses; Radio frequency; Testing; Working environment noise;
