Portable Calibrator for Across-the-Road Radar Systems

摘要

The calibrator provides simulated radar reflections with a choice of targetsignature, such as automobile, truck, small vehicle like a motorcycle, and several trucks in close proximity, to test those radars that have the ability to distinguish these targets. The calibrator can also simulate a vehicle approaching or receding from the radar in order to evaluate the radar's effectiveness in differentiating the direction of target motion. This paper describes an inexpensive, easy-to-use electronic calibrator that can be used to improve the credibility of across-the-road type radars. Such a device can detect actual failures that generate erroneous speed readings. Regular document use of the calibrator can greatly facilitate the maintenance of across-the-road systems by indicating faulty readings and trends in the radar operation, indicative of imminent failure. A precision calibrator is necessary to determine that the radar instrumentation is operating properly and that the computer algorithm results in displaying the correct speed.