The ground-simulating radar module utilizes millimeter-wave radar technology to continuously scan the terrain. This enables the aircraft to detect changes in the flight path and adjust its altitude in real-time based on the terrain and crop height. This ensures a consistent, ground-level flight and uniform spraying during operation. The radar module boasts stable detection performance, excellent environmental adaptability, and strong resistance to interference. It operates effectively in all lighting conditions, offers a long detection range, and is capable of functioning in all weather and throughout the day.