User Manual Part 2

IS-900 User Guide Page 125 of 159
Mobile PSE configuration is stored in the EPROM of each station and is configured
automatically without user input. Constellation, however, is custom for each
installation and must be configured before the system can be used.
SoniDiscs are available in several types of protective housings, including SoniPods,
SoniFrames, SoniWings, and SoniStrips. This Section will focus on the most common
form—SoniStrips. For more information about the other SoniDisc housing styles, see
their appropriate supplemental manual. For best performance it is generally
recommended that SoniStrips be installed in a regular grid over the tracked area. The
total distance from a SoniDisc in the Constellation to a tracked station should not exceed
3.05 meter (10 feet) to guarantee good signal detection (4.0 meter with +15 VDC
external power boosters).
IS-900 default configuration does not contain a Constellation, so it is up to the user to
configure it. The system is shipped with a packing list containing the part numbers of the
included SoniStrips. These part numbers and corresponding SoniDisc Hardware IDs are
used in the Constellation tool to identify the SoniStrips.
To operate, the system needs to know the position and orientation of each of the
SoniDiscs in the Constellation with high degree of accuracy (2 to 3 mm positional
accuracy and at least 5 degrees for the normal vectors of each SoniDisc in the
Constellation). A high accuracy device, like a total station (also known as a Theadolite
with absolute position measuring capabilities), will be required to measure the positions
of the SoniDiscs and enter them into the system configuration. The importance of the
quality of this data can’t be overstated, as the system cannot track better than its
configuration would allow.
A unit normal vector, as shown in the figure above, defines the orientation of a SoniDisc.
The default assumption is that the Constellation is installed horizontally over the tracked
area, so the normal vector points straight down with unit normal vector coordinates of
0,0,1. Entering the correct normal vector for each SoniStrip is important. The normal
vector information is used by the IS-900 tracking algorithm to correctly schedule the
polling of SoniDiscs.
File Menu
Open Opens a file selection dialog. Select a configuration file and
click OK. The file is read in and Constellation contained in it
replaces the currently displayed configuration.
Save Currently displayed Constellation is saved to a file previously
selected with the Open or Save As commands.
Save As Opens a file selection dialog. Current Constellation is
written to the selected file, previous contents are overwritten.