It is not possible to access the link design sections for a link which are not associated with the network display using the standard open file dialog. In the network display, the link design sections are accessed by clicking on the specific link. * PL50 - network display and integrated link design sections. The Pathloss program contains two separate applications as follows. The color legend and overall transparency are completely configureable Pan, zoom and the view point control allow the user to effectively fly along a path. * A 3 dimensional elevation display showing the Fresnel zone radius on links. The elevation ranges, absolute- relative settings, colors, and transparency are completely configureable. * Elevation displays in a flat and shaded format.
* Vector data in ESRI shapefile or Planet formats. The geo reference information can be obtained from external text files (Planet type), MapInfo tab files, directly from geo-tiff files or can be manually geo referenced directly in the program. * Geo-referenced imagery in bmp, png, jpg and tif file formats. The following backdrops are available in this display: In addition to receive signal levels, an area study can display the most likely server, carrier to interference and simulcast delay.Īll operations are centered around the network display which provides a geographic layout of sites and links. In an area study, signals from a number of base stations are calculated into a common area. In a local study each base station has its own coverage centered on the base station. This option combines the point to mulitpoint - local studies and interference options and adds area study analysis. PL5T - Interference, point to multipoint design, local and area studies Interference through passive repeaters is included in the calculation. The receiver threshold degradation and the resulting increase in the outage probability is then determined taking into account the fade correlation for rain and multipath fades. For each receiver, the aggregate interfering level of all transmitters is calculated. In addition to the Pathloss deterministic diffraction algorithms, local studies can be carried out using the F(50,50), F(50,90), F(50,10) curves, Okimura (Hata) and Cost (Hata) empirical algorithms.Īn interference analysis can be carried out between groups of links in the network display or between a network display group and the Pathloss site database for all radio types. Additionally local coverage studies can be carried out from a base station using signal strength, fade margin or visibility as the display criteria. These are used for the automatic PTMP linking and design features. The point to multipoint design option adds multi-sectored base stations to the network display. PL5C - Point to multipoint design - local studies These features are common to all program options. This includes the design sections for terrain data, antenna heights, diffraction, transmission analysis and reflections - multipath analysis. The basic program consists of the network display and the automated linking and design features for point to point radio links.
PL5B - Basic program - point to point link design
Pathloss version 5 is available in several options Pathloss 5.0 Will released on February 2009
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