Speed measurement through analysis of the Doppler effect in vehicular noise
- 1 August 1975
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Vehicular Technology
- Vol. 24 (3) , 33-38
- https://doi.org/10.1109/T-VT.1975.23599
Abstract
An alternative method of speed detection is presented based on the Doppler effect in vehicular noise. A procedure is developed to correlate the noise frequency spectrum as the vehicle approaches an observer with the spectrum as it moves away. Limitations of the technique are evaluated using empirical data obtained under typical traffic conditions. These results demonstrate that the Doppler shift can be extracted from automotive noise and related to the vehicle's speed. Although sources of inaccuracy are significant at lower speeds, a resolution of ±5 percent was easily achieved at 60 mph. Such a technique may be found useful in large scale traffic speed and density monitoring systems.Keywords
This publication has 4 references indexed in Scilit:
- Future vehicle detection conceptsIEEE Transactions on Vehicular Technology, 1970
- Radar, acoustic, and magnetic vehicle detectorsIEEE Transactions on Vehicular Technology, 1970
- Surveillance aspects of a computer-controlled traffic systemIEEE Transactions on Vehicular Technology, 1970
- The application of a digital computer for traffic controlIEEE Transactions on Vehicular Technology, 1970