Paper Title:

Harmonic Detection and Suppression of Frequency Doubling of Speed Measuring Radar Based on Closed-Loop Gain Control

Periodical Advanced Engineering Forum (OPEN ACCESS) (Volume 4)
Main Theme Smart Technologies for Communication
Edited by Tianharry Chang
Pages 68-73
DOI 10.4028/www.scientific.net/AEF.4.68
Citation Qing Jiang Jin et al., 2012, Advanced Engineering Forum (OPEN ACCESS), 4, 68
Online since June, 2012
Authors Qing Jiang Jin, Zong Tian Liu, Qiu Hong Xu
Keywords Frequency Doubling Suppression, Harmonic Detection, Radar, Speed Measuring
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Abstract

This paper investigates the problem of frequency doubling with speed measuring radars. The main reason for it is that the gain of the reflected wave receiver cannot cope with all the possible waves reflected by cars of different distances away from the radar. Strong signals will saturate the receiver and generate harmonics which interferes with the speed measuring. Based on this, a harmonic detection and frequency doubling suppression method is developed in this paper and the effectiveness of the method is verified by experimental results.