Illustration
Hear drone radio links, and find where they come from.
Passive receivers above the terrain listen to drones and their pilots. Several aerostats sharing precise time locate the transmitter.
How it works
Most drones depend on radio, and so do their pilots. A receiver up high hears what ground receivers miss. Three or more, spread apart, compare when a signal reaches each one to fix where it came from. This is time difference of arrival, or TDOA. Our receivers only listen.
Carries
- Passive RF
- Emitter location
- Spectrum awareness
- Precise time
Where it stands
In development. Comes with the larger aerostat. Locating needs three aerostats or more.
What it does
- 01
Detection
Drone control and video links, often before the drone is in view.
- 02
Location
Where emitters are, merged with radar and camera tracks.
- 03
Spectrum record
What transmitted over a site, and when.
- 04
Jamming alerts
When navigation or radio bands are jammed, and from where.
Limits
What it cannot do, so a site knows what to plan around.
- A drone that does not transmit is invisible to it.
- Offered only to armed forces and authorized agencies.
- Parts may be export-controlled.
Before we sell it
What we will measure and show first.
- Location error against known emitters
- False detections in a real radio environment
Questions
What is passive RF drone detection?
Listening for a drone's radio signals without transmitting. It can find a drone before anyone sees it, but not a drone that is silent.
How do several aerostats locate a radio emitter?
Each one records exactly when the signal arrives. The tiny differences between those times fix the emitter's position. It takes three aerostats or more.
Working on signals or spectrum?
Tell us about the site or the test. We will tell you what we can do, and when.