HuntMaster's Mapping Module is an advanced information gathering tool, capable of improving the performance of any DF mission by displaying the most valuable DF information gathered on georeferenced Google Maps (optional) or user's custom maps. HuntMaster will then overlay to these maps a series of marks, indications and estimators to help the DF Operator in his job of locating the RF signal source. GPS position, Heading (Mobile Units only), and DF Bearings coming in from all active DF Sites (both mobile or fixed) will be recorded and displayed in real time.


HuntMaster keeps the information of every available map in an internal database, allowing to instantaneusly switch between maps while the user drags the map in any direction. Maps are not downloaded from an on-line server, so HuntMaster can operate as a truly stand alone mapping application. On request we provide map datasets in up to 8 different resolution levels of the areas of interest. Map resolution levels are user selectable through conveniently located Higher/Lower Resolution buttons.


HuntMaster can be ordered with complete Map Datasets of the intended area of operation, or the user can provide its own maps. In most cases, a mix of both is generaly the best solution. Where some maps are standard, while others are custom maps provided by the customer. The Map Module is capable of indexing both custom and standard map datasets seamlessly.



The user will have the possibility to plot and see a series of tools which are most needed in a DF Mapping Software. The most important features found on the map are:

  • Vehicle's Location: A user selectable icon is displayed in the current position of each DF Station (if mobile the position is GPS derived). The icon has the same heading of the vehicle (with respect to True North).
  • GPS track: As the vehicle moves on the map, a GPS trail line is ploted. Displaying the route the vehicle has taken.
  • Landmarks (Placemark Waypoints): 'Placemark' Waypoints display special interest landmarks, such as the position of known repeaters, or fixed beacons which can be used to calibrate the equipment or other usefull information for navigation or DF'ing.
  • Bearing Lines: The user can plot some of the measurements taken by the various DF Processor on the HuntNET. This measurements will appear as 'Bearing' Waypoints (as they are DF measurements not landmarks). This type of waypoints has the ability to display a LOB (line of bearing) in the angle of the DF measurement. The color of the bearing line matches the Frequency's Memory Channel Color. Making it easy to determine the source frequency of each bearing line visible on the map. When these lines intersect, HuntMaster will indicate the intersection location with a Star Icon. Only measurements taken on the same frequency are computed when estimating the intersecting spot. A more advanced triangulation tool (usefull when plenty of bearing lines are present) is the Heat Overlay Display.
  • Heat Overlay Display: This transparent layer will show a colored region where the hidden RF Source is most likely to be located. The real magic behind this display is a Mathematic model called Maximum Likelihood Probability Region (MLPR), which estimates real probabilities of finding the source transmission on each spot of the map. Displaying in darker colors those areas where it's most probable for the RF source to be localed. Red colored areas have a 95% confidence.


MANIPULATING WAYPOINTS (Landmarks & Bearing Lines)

Information on individual Waypoints can be obtained by double clicking on any waypoint's icon, or in case of Bearing Waypoints simply by double clicking on the LOB line itself. Both methods, will make the 'Waypoint Editor' window to pop-up. This control will display all the available information related to that particular item. As can be seen in the screen shot next-by, the following fields are available: Lat/Lon Coordinates, Altitude, Waypoint Name, frequency and LOB angle (in case of Bearing Waypoints), and a series of additional style related fields. Each Waypoint can be granted a custom text color, LOB color, different wireline shapes or even an icon picture. If no custom style parameters are set to any given waypoint, then the default style settings are used instead.

There is also a Waypoint Database list view window. This control displays sumarized information on all available waypoints. The user has the chance to center the map view on any of them, add a new Waypoint manually, or delete any of the current waypoints. All waypoints can be stored in 'wpt' compatible waypoint files, or exported into an spreadsheet compatible file format.


Copyright © 2000-2014 HuntMaster, Corp. All Rights Reserved.