The Pathloss program is a comprehensive path design tool for radio links operating in the frequency range from 30 MHz to 100 GHz. The program is organized into eight path design modules, an area signal coverage module and a network module which integrates the radio paths and area coverage analysis. Switching between modules is accomplished by selecting the module from the menu bar. The functions and features of these modules are described in the web pages below.
|Map Grid Module |
A new site network display module named "Map Grid" has been added in the May 2001 program build. This operates in parallel with the existing network module. The map grid module uses fixed projections to display the network sites with both backdrops and elevations. The backdrops can be in either a TIFF or Windows bit map (BMP) format. The elevations must be in the Odyssey - Planet BIL format. This feature is available as part of the microwave interference or area coverage option.
|Multipath and Rain Fade Correlation |
The interference fade margin / threshold degradation has been split into two separate components for rain and multipath. Default correlation values can be assigned for cases where the main and interference paths are spatially correlated. A correlation editor is provided which graphically displays each interference case in the network module. This feature is available as part of the microwave interference option.
The May 2001 build program can read these data files and all previous versions. Pathloss programs prior to the May 2001 build will not be able to read the new files.
This feature is available to M/W interference module users only
|Network background display |
With the January 2000 and newer maintenance release the user can now have a terrain image as a background in the network display. A new Add Site feature adds a new site directly on the network display. In conjunction with the network background, this feature will be useful in the initial planning stages.
|For Pathloss users in the United States, the program ships with compressed 3 second terrain data for the United States and Alaska on a single CD-ROM. This data has been taken directly from the USGS 1:250,000 DEMS.|
|As a convenience to Pathloss users, the program ships with USGS GTOPO30 data for the world (except for the Antarctic region). The header and elevation data files are supplied in the native USGS format on two CD-ROMS.|