User Manual Part 1

IS-900 User Guide Page 18 of 159
Figure 5 - IS-900 SoniWing
Figure 6 - IS-900 SoniFrame with three 6 ft. SoniStrips Assembled and Mounted on a
Ceiling
Figure 7 - Discrete SoniDisc Transmitter (SoniPod)
The IS-900 uses an acoustic time-of-flight (TOF) ranging system to prevent position and
orientation drift. For maximum accuracy and resolution, acoustic range measurements are made
with unidirectional TOF measurements from the SoniStrip transmitters to the Tracked Stations.