Cause:

The domain controller successfully recognizes the radar, but if no radar point cloud data is received for 1.5 seconds continuously during flight, a "no data" fault is triggered, and the aircraft will hover. If the data is restored within 30 seconds, the mission will continue. The absence of radar data does not necessarily indicate a communication failure; it may be caused by a radar malfunction. If both "no data" and "no communication" faults are reported, troubleshoot using the "no communication" fault procedure.

Troubleshooting Methods:

1、Check the backend to see if the radar has reported any faults (e.g., code disk abnormality). If the radar itself continuously reports faults leading to no data, replace the radar.

2、Disconnect the FPV (if the FPV is short-circuited due to water ingress, it may lower the radar's power supply voltage, causing scanning system abnormalities) and test if the system operates normally.

3、Remove the radar and check for unusual noises. If unusual noises are present, return the radar to the factory for repair.

4、If no unusual noises are detected, replace the radar for cross-verification.