Knowing that a transmission exists is important, but knowing the location of that transmission can deliver vital intelligence in both military and civilian applications.

• UAS (drone) detection
• Locating RF interference sources
• Border security
• Aircraft tracking
• Geolocating the enemy by their transmissions

The CRFS solutions are able to detect, classify and locate signals of interest over a wide area.

Direction Finding versus Geolocation

Geolocation is the ability to pinpoint a transmission in two or three dimensions. By contrast, Direction Finding (DF) gives a bearing to a transmission, i.e., an angle from the sensor to the transmitter, it does not directly geolocate the position of transmission.

There are several well-established radiolocation techniques for finding the source of transmission of a given signal. These include Time Difference of Arrival (TDOA), Power on Arrival (POA) and Angle of Arrival (AOA). Each technique has its advantages and disadvantages for different signal types. The CRFS approach is to use all three of these techniques, depending on your application.  The output of the three methods can be overlaid onto maps to increase the probability of locating the source of any given signal.

For more information about CRFS geolocation, visit Gelocation techniques.