Short range radar

Seeing behind the curtain

Use cases


Vital data acquisition



Motion detection (large dynamic range enables detection of very small and large objects)



Moisture determination (e.g., in textiles)



Defect detection (e.g., in salt mines, sewers, tunnels)



Object detection (e.g., vegetables in soil, carcinoma tissue)



Presence detection



360°- short range radar


    Driver assistance systems

Principle of operation

The short range radar operates according to the well-known radar principle in which the propagation time of a transmitted wave reflected by an object is measured.


The distance from the object to the sensor can be determined from this roundtrip time. By further evaluating the received signal, conclusions can also be drawn about the velocity or size and type of the examined object.


The short range radar of Ilmsens is characterised by the system's high stability over time. Very small propagation time differences are identified reliably and permit conclusions about the position and position changes without requiring direct contact. Even rain, fog or dirt in the signal path are no problem.


Regarding the special technology used, there is almost no self-interference and the receivers are robust against other types of transmitters. Furthermore, there is no degrading of the high measurement rate to detect fast objects, even if they are very close to the radar.  

Short range radar: how it works