Final answer:
Lost communication or 'lost comm' with an Autonomous Vehicle, often a UAV, occurs when it can no longer send or receive signals from the control station due to interference, equipment malfunctions, or obstacles. The specific point at which the AV is considered to have lost comm varies by operational protocols and mission type.
Step-by-step explanation:
The term 'AV' likely refers to an Autonomous Vehicle, which in some cases can be an Unmanned Aerial Vehicle (UAV) or drone. 'Lost comm' means loss of communication, which for an autonomous vehicle would indicate it is no longer in communication with its control station. In aviation, communication with the control station is critical for flight safety and operations.
For UAVs, lost communication typically means the vehicle has lost the ability to send or receive signals from its operator or control station. This could occur due to a range of issues such as signal interference, equipment malfunction, or obstacles blocking the transmission pathways. When communication cannot be re-established within a certain time period (which may vary depending on the specific operational protocols and type of mission), the vehicle is considered to be in a 'lost comm' state. At this point, pre-programmed procedures or autonomous safety measures are expected to engage, such as return-to-home functions or safe landing protocols.
It's important to note that the definition of 'when' a vehicle is considered to have lost communication may vary by jurisdiction and the specific operational rules applicable to the use of UAVs or drones.