Acoustic Echolocation & 3D Spatial Mapping

Active Linear Frequency Modulated (LFM) chirp pulse compression ($500\text{--}4000\text{ Hz}$) enables sub-centimeter range precision for UAV navigation in GPS-denied environments (mines, caves, tunnels).

• CA-CFAR Adaptive Echo Detection: Automatically isolates true wall reflections from acoustic drone multipath.
• 5-Axis Hazard Guard: Emits real-time collision warnings when obstacles breach safety perimeter ($< 1.0\text{ m}$).