User Manual Part 1

IS-900 User Guide Page 38 of 159
Figure 16 - Unit Normal Vector Definition for Ceiling Installed SoniStrip
The SoniStrip Constellation Array provides an absolute positional reference to the tracked
environment. The idea behind providing SoniDiscs (beacons) in groups of three in each SoniStrip
(rail) is to give flexibility in both the configuration and installation to cover a wide range of tracking
environments in a convenient package for ease of installation. To establish a minimum criterion
for a tracked environment, at least two SoniStrips are required to provide proper tracking. A
conceptual diagram using two SoniStrips, shown in Figure 17, provides the fundamental
relationship established by the SoniStrip Constellation with respect to the tracking environment.
0.67 m
3 m
Side view of SoniStrips
Area of Single SoniDisc
Coverage at 2 m from
SoniStrip Constellation
Area of optimal
tracking at 1m to 2 m from
SoniStrip Constellation
Top view of SoniStrips
70 degree
acoustic cone
Floor
0.67 m
Figure 17 - Tracking Coverage with Two SoniStrips
Normal vector pointing down
0, 0, 1
SoniStrips
SoniDisc Emitter