Signal Processing - March 2017 - 60
SIGNAL PROCESSING
FOR SMART VEHICLE TECHNOLOGIES: PART 2
Rickard Karlsson and Fredrik Gustafsson
The Future of Automotive Localization Algorithms
Available, reliable, and scalable localization: Anywhere and anytime
M
©ISTOCKPHOTO.COM/CHOMBOSAN
ost navigation systems today rely on global navigation satellite systems (Gnss),
including in cars. With support from odometry and inertial sensors, this is a sufficiently accurate and robust solution, but there are future demands. autonomous cars
require higher accuracy and integrity. using the car as a sensor probe for road conditions in
cloud-based services also sets other kind of requirements. The concept of
the Internet of Things requires stand-alone solutions without
access to vehicle data. Our vision is a future with both invehicle localization algorithms and after-market products, where the position is computed with high
accuracy in Gnss-denied environments. We present a localization approach based on a prior that
vehicles spend the most time on the road, with
the odometer as the primary input. When
wheel speeds are not available, we present
an approach solely based on inertial sensors, which also can be used as a speedometer. The map information is included in a
Bayesian setting using the particle filter
(PF) rather than standard map matching.
In extensive experiments, the performance
without Gnss is shown to have basically
the same quality as utilizing a Gnss sensor. several topics are treated: virtual measurements, dead reckoning, inertial sensor
information, indoor positioning, off-road driving, and multilevel positioning.
Introduction
Digital Object Identifier 10.1109/MSP.2016.2637418
Date of publication: 3 March 2017
60
Today's positioning systems are intended for humans
rather than machines. The position is presented and used
for instructions in navigation systems or for reporting vehicle
data, also including emergency accident location. We refer to the
area as localization algorithms for several reasons. First, the word algorithm
indicates software development. Today there is already sufficient information at hand,
in terms of sensors and databases, to make a leap in performance compared to Gnssbased solutions. second, localization is not a system, rather it is a service required by
many systems. Third, the term navigation is avoided since this is only one application
of localization algorithms. Fourth, localization is sometimes a more appropriate term
IEEE SIgnal ProcESSIng MagazInE
|
March 2017
|
1053-5888/17©2017IEEE
http://www.ISTOCKPHOTO.COM/CHOMBOSAN
Table of Contents for the Digital Edition of Signal Processing - March 2017
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Signal Processing - March 2017 - Cover3
Signal Processing - March 2017 - Cover4
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