Smart Micro Airborne Radar Standard


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The Micro Radar Altimeter is the most advanced RADAR altimeters around.  


This technologically leading product is intended for standard UAVs, small UAVs (sUAV), micro UAVs (MAV), fixed and rotary winged aircraft, VTOL aircraft, terrain awareness and warning 

systems (TAWS) and similar applications. Because of its high update rate it is also specifically suitable for wave height monitoring and terrain mapping.

It was derived from Smartmicro’s automotive radar designs, therefore is extremely robust 

and has attractive cost.


Micro RADAR Alitimeter also comes in a lightwieght version


The light weight option is offered for weight optimized applications. This variant is particularly suited for integration into the customer’s enclosure. If weight is very crucial, the altimeter even can be operated without a radome of its own but inside the customer’s enclosure.


The spec change as per following table:

Parameter Value Unit


40 (antenna part IP 67)  
160 fully integrated (customer radome)
235 integrated (including radome)
Dimensions 110 x 99 x 26 (without connector) mm
Housing Identification 050A0x
Model Number UMRR-0Ax70x-22070x-050A0x  

UMRR-0Ax70x-22070x-05070x (standard version)

    Altitude interval: 0.5 .. 500 m.
    Accuracy: Typically 2% (high altitude) or 0.25 m (low altitude)
    Maximum pitch and roll: ±20°.
    Size: 110 x 99 x 29 mm.
    Weight: 350g.
    very robust and watertight.
    RS485 or CAN data interface.


Smart Micro Altimeter RADAR Applications

Here are some of the SMART MICRO Altimeter RADAR installed applications:





Micro Radar Altimeter Specifications

Parameter Value Unit
Sensor Performance    
Min Height 0.51 m
Max. Height 5002 m
Supported Pitch and Roll Angles -20...+203 degrees
Max Vertical Speed 50 m/s
Max Forward Speed 70 m/s
High Accuracy 3% of 0.5m (maximum of) %, m 
Update Time <=17 ms
Startup Time
< 1 (lower accuracy altitude available)
< 5 (altitude result in spec.)
Ambient Temperature -40 ... +85 degree C
Shock 100 grms
Vibration 14 grms
IP 67  
Pressure / Transport altitude 0…10.000 m
(incl. 0.5m cable and connector)
Model No. 0Ax70x-22070x  
DSP Board – Antenna Identification 0Ax70x-22070x  
Housing Identification 05070x  
Power Supply

7 ... 32III 




Frequency Band


FCC15.245, EN300440 compliant

Bandwidth < 100 MHz
Max. Transmit Power (EIRP) 20 dBm
Interfaces CAN V2.0b (passive)IV
 RS485 half-duplex
Connector 8 Pin plug Binder Series 712 CAN, Power, RS485
1 Below minimum height, presence detection is available.
2 Please note that the Radar system – like any other sensor system – although being well optimized and providing excellent performance, will not achieve a 100% detection probability and will not achieve a false alarm rate equal to zero.
3 Combined Pitch + Roll angle shall not exceed given value. If exceeded, max. altitude and accuracy will be reduced.
4 A lightweight variant is available at 160g weight, see section 1.3
5 measured at connector; min. voltage slew rate 500V/s or max. voltage rise time 15ms; supply source impedance 0.5Ohms.
6 It is recommended to use an external surge protection for power, CAN, RS485 and other interface ports.