First responder elevation detection via drone and 3-way communication telemetry system

A tracker device for a first responder for use in locating a downed first responder in a multi-story building environment, the tracker device comprising:

• a radio configured to:
• receive a first radio signal from an emitter, the emitter worn by or carried on the downed first responder within the multi-story building environment;
• and
• receive a second radio signal from an unmanned aerial vehicle (UAV) located outside the multi-story building environment, the second radio signal including at least one data packet, the at least one data packet of the second radio signal including location information of the emitter, the location information of the emitter comprises an elevation parameter within the multi-story building environment;
• and
• processing circuitry in communication with the radio, the processing circuitry configured to:
• determine at least one location parameter associated with the emitter based on the first radio signal and the location information of the at least one data packet of the second radio signal.