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NIST Authors in Bold
|Author(s):||Claude Weil; Dennis G. Camell; David R. Novotny; Robert T. Johnk;|
|Title:||'Across-the-Road Photo Traffic Radars: New Calibration Techniques'|
|Published:||May 17, 2004|
|Abstract:||We discuss simulator units for calibrating across-the-road Doppler traffic radar transceivers used in enforcement of highway speed limits. Two units of very similar design were developed, one operating at K-band (24 GHz) and the other at Ka-band (35 GHz). The signal received from the radar transmitter is frequency-modulated at rates that correspond to the expected Doppler shift for approaching and receding vehicles travelling at speeds of 25 to 200 km/h. The modulated signal is subsequently retransmitted back to the radar receiver, which demodulates it and then displays the simulated speed . The required calibration accuracy is 1.6 km/h at 90 km/h.|
|Proceedings:||MICROWAVE & RADAR WEEK IN POLAND|
|Dates:||May 17-19, 2004|