The radio physics and software architecture enabling rapid airborne location of aircraft and marine distress beacons.
COSPAS-SARSAT satellites detect 406 MHz Emergency Locator Transmitters (ELTs) activated by downed planes and sinking vessels, relaying approximate coordinates to rescue centers.
EvtolRescue carries multi-element conformal antenna arrays that measure the phase arrival difference of 406 MHz beacon pulses, pointing the flight director directly toward the distress beacon with sub-degree bearing accuracy.
As the aircraft closes to within 2 miles, the system tracks the continuous low-power 121.5 MHz homing warble, guiding the aircraft directly over the liferaft in zero visibility.