Journals
Publish with us
Publishing partnerships
About us
Blog
Mobile Information Systems
Journal overview
For authors
For reviewers
For editors
Table of Contents
Special Issues
Mobile Information Systems
/
2016
/
Article
/
Tab 3
/
Research Article
An Indoor Ultrasonic Positioning System Based on TOA for Internet of Things
Table 3
Coordinate STD versus radius of transmit nodes (cm).
Radius of transmit nodes
400
200
100
50
estimate STD
0.9
1.0
1.3
2.2
estimate STD
1.1
1.4
1.7
2.8