Ainstein US-D1 Radar Altimeter

The Ainstein US-D1 Radar Altimeter has a range of 50m, an update rate of 82hz and weighs only 110g.


currently the manufacturer warns that operation indoors can be problematic due to multi-path reflections…caution is advised

The user manual for this radar unit can be found here



Support for this sensor is available in Ardupilot firmware versions 4.0 and later

Where to Buy

Units can be purchased thru Ainstein

Connecting to the Autopilot

For a serial connection you can use any spare Serial/UART port. The example below shows how to connect to SERIAL4 as the first rangefinder.

Testing the sensor

Distances read by the sensor can be seen in the Mission Planner’s Flight Data screen’s Status tab. Look closely for “sonarrange”.