AQualify Details
AQualify was designed for use by non-technical users as well as installers to easily pre-qualify potential wireless subscribers.. Simply enter a street address, press the find button to obtain Lat, Lon for that address, then press the plot button to get a path profile. The path profile will indicate when the path is obstructed, fresnel zone intrusions, or when insufficient signal is available. The path profile can be printed or saved to a bmp file.
The screen dump (below) shows a gray scale bitmap underlay representing the SRTM elevations in the area of interest. Dark areas are low elevations and light areas are higher elevations. The SRTM elevation underlay can be suppressed, or displayed with false colors. It is also possible to use USGS topo maps as underlays. Maps (UnderTow Software, Precision Mapping V 6.0 using GDT data, US only) are vector based and fully zoomable. The toolbar displayed just above the upper right corner of the map displays Latitude, Longitude (in a variety of formats), and elevation AMSL. The measuring tool on the toolbar can be used to obtain distance between 2 points as well as free space loss between those points.
Subscriber information includes CPE (wireless) parameters.
AQualify Main Page
Contemplated additions:
GPS support. Display location information on moving map. Alert user
when approaching subscriber location or when crossing line of site path.
This will be useful when performing physical site survey to determine if a LOS
does indeed exist. We have found that an obstruction on a high point (not
indicated in SRTM data) some distance from the subscriber may block the path.
In the above example we drove some nearby roads intersecting the path to
determine if any potential obstructions existed. It became obvious during
this suvey that integrated GPS support would be a great help.
Add observed obstructions to path profile. Provide the ability for the user to enter the distance and direction of an obstruction of known height. Subsequent regeneration of the Path Profile will incorporate this obstruction when doing path calculations. Would be very useful if the installer/surveyor had a range finder and inclinometer to obtain the necessary information although estimates can be used to good effect.
Email subscriber records. Send the detailed information to your installer/surveyor. This can be jpg, bmp files, or the raw subscriber data (which could be imported into another session of AQualify.