The frequency used by digital (spread spectrum) radio communications in our applications, including 2.4Ghz RC, Bluetooth and some video transmission equipment. This is a different band than the older [..]

Altitude above ground level

Altitude Heading Reference System. An IMU (see below) plus the code to interpret the output from its sensors to establish a plane’s XYZ and heading orientation.

ArduPilotMega.

Academy of Model Aeronautics. The main US model aircraft association. The AMA works closely with the Federal Aviation Administration (FAA) to establishreasonable rulesfor the use of amateur UAVs. Each [..]

An open source embedded processor project. Includes a hardware standard currently based on the Atmel Atmega168 microprocessor and necessary supporting hardware, and a software programming environment [..]

Flight Controller providing capabilities for stabilized flight, position maintenance and automated mission (waypoint) path following.

This could be the ATitude Control libray in Copter with params starting with “ATC_” or it could mean Air Traffic Control. Usually located at an airport control tower but can also be an app or service [..]

Rotary-wing autopilot software variant of the ArduPilot project.

Fixed-wing autopilot software variant of the ArduPilot project.