This menu is used to establish a telemetry communication between two autopilots. The autopilot being configured will “listen” the variables indicated in the window “Enabled”, from another autopilot whose address is indicated in “UAV source”. The sniffer is commonly used to make the aircraft listen the position of the ground station and the link quality.
The source UAV, in this case, is the ground station, which communicates to the Air UAV its position and the quality of the radio link between them. The directions of both autopilots are configured in the tab “Mask”. In “Mapping Variables”, the ones send by the ground UAV are indicated in the columm IN, and they are stored in the variables indicated in Out for its later use by the air autopilot. The sniffer is configured so the air autopilot has information about the state of the communications so it can perform an action when the link is lost, and also to make the aerial platform know about the ground station position so it can perform a mission in relation to that point.