Doppler Speed Radar

Access to the laboratories of the National Measurement Institute Australia ( NMIA) at Lindfield also allows us to offer a comprehensive Doppler Speed Radar calibration service.

Doppler speed radars typically operate at microwave frequencies of 24 GHz and 35 GHz. The operation of these devices is based on the principle that the radar signal reflected from a moving vehicle is shifted in frequency by an amount directly proportional to the speed of the vehicle.

Calibration of a Doppler speed radar in the laboratory requires a simulator for a moving target with a specified speed. Traditionally, a vibrating tuning fork, which resonates at a specific constant pitch to simulate a given speed of the moving target, is placed in front of a Doppler radar to verify the accuracy of the radar reading.

In our laboratory, both internal oscillator and speed reading of K-band Doppler speed radar are calibrated by an electronic simulator which simulates an approaching or receding vehicle with any speed. The accuracy of measured speed is within 0.1 km/h.