Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

New Techniques for Calibrating Across-the-Road Traffic Radars



Claude Weil, Dennis G. Camell, David R. Novotny, Robert T. Johnk, Arthur Ondrejka


We discuss simulator units for calibrating across-the-road Doppler traffic radars used in highway speed enforcement. Two units of essentially the same design were developed, one operating at K-Band (24 GHz) and the other at Ka-Band (35 GHz). The signal received from the radar is frequency modulated at rates that correspond to the expected Doppler shift for approaching and receding vehicles traveling at speeds of 25-200 km/h, and subsequently retransmitted back to the radar. The required calibration accuracy is 1.6 km/h at 90 km/h.
Conference Dates
August 17-24, 2002
Conference Location
Maastricht, 1, NL
Conference Title
2002 URSI General Assembly


chirp, Doppler, highway, photographic, radar, traffic, calibrator, speed enforcement


Weil, C. , Camell, D. , Novotny, D. , Johnk, R. and Ondrejka, A. (2002), New Techniques for Calibrating Across-the-Road Traffic Radars, 2002 URSI General Assembly, Maastricht, 1, NL (Accessed May 30, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created August 16, 2002, Updated October 12, 2021