Ainstein LR-D1 Long Range Radar Altimeter¶

The Ainstein LR-D1 Long Range Radar Altimeter has a range of 500m, an update rate of 40hz and weighs 300g.

Note

Support for this sensor is available in ArduPilot firmware versions 4.6 and later

The user manual for this radar unit can be found here.

Where to Buy¶

Units can be purchased through Ainstein’s website.

The LR-D1 is available in serial and DroneCAN versions.

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.

SERIAL4_PROTOCOL = 9 (Lidar)
SERIAL4_BAUD = 115 (115200 baud)
RNGFND1_TYPE = 42 (Ainstein_LR_D1)
RNGFND1_MIN_CM = 100
RNGFND1_MAX_CM = 50000
RNGFND1_GNDCLEAR = 10 or more accurately the distance in centimeters from the range finder to the ground when the vehicle is landed. This value depends on how you have mounted the rangefinder.

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