Browse Publications Technical Papers 2002-01-1071
2002-03-04

On Board Doppler Sensor for Absolute Speed Measurement in Automotive Applications 2002-01-1071

Many automotive applications, like anti-lock braking systems (ABS), anti collision radars, airbags, require an absolute speed accurate measurement, especially in high risk situations. On-board Doppler sensors may provide a better answer to such a problem than sensors which measure the speed of rotation of the wheels. Indeed the latter can for instance slide on wet or icy roads. However, conventional Doppler sensors cannot operate when the beam emitted by the radar does not encounter a scattering obstacle on the road surface.
In this paper, we present solutions, tested by simulations and by experiments, which drastically increase the probability of having reflecting obstacles in the antenna footprint of Doppler sensors, leading to accurate measurements.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Speed Measurement of Vehicles by Radio Wave - Absolute Speed Measurement of Automobiles

920256

View Details

TECHNICAL PAPER

Analysis of Vehicle Speed Measurement Using Magnetic Loops

2001-01-0811

View Details

TECHNICAL PAPER

Evaluation Of Environmentally Friendly, Glycol-Free Mobile Aircraft Deicing System

2003-01-2394

View Details

X