sameh ali
2011-04-07, 06:33 PM
P.1812 model could be a used in place of Longley-Rice for more accurate coverage and interference predictions. P.1812 takes into account the following model elements:
• line-of-sight
• diffraction (smooth-Earth, irregular terrain and sub-path cases)
• tropospheric scatter
• anomalous propagation (ducting and layer reflection/refraction)
• height-gain variation in clutter
• location variability
• building entry losses
Terminal clutter losses are calculated when the receiver or transmitter antenna (the model is symmetrical) is located below the height representative of the ground cover surrounding the transmitter or receiver. P.1812 offers recommendations for receivers with antennas below clutter height in urban or suburban environments, for mobile systems with omnidirectional antennas at car-top height, receivers with rooftop antennas near the clutter height, and for receivers in rural areas
do you have any propagation software package tool using ITU .1812
• line-of-sight
• diffraction (smooth-Earth, irregular terrain and sub-path cases)
• tropospheric scatter
• anomalous propagation (ducting and layer reflection/refraction)
• height-gain variation in clutter
• location variability
• building entry losses
Terminal clutter losses are calculated when the receiver or transmitter antenna (the model is symmetrical) is located below the height representative of the ground cover surrounding the transmitter or receiver. P.1812 offers recommendations for receivers with antennas below clutter height in urban or suburban environments, for mobile systems with omnidirectional antennas at car-top height, receivers with rooftop antennas near the clutter height, and for receivers in rural areas
do you have any propagation software package tool using ITU .1812