User's Manual

Galaxy Tracking Systems, L.L.C. VTU User’s Guide
3
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5 SYSTEM OVERVIEW
A typical configuration of Galaxy’s vehicle tracking system is illustrated below.
CENTRAL
COMMAND
CENTER
(CCC)
CENTRAL
COMMAND
CENTER
(CCC)
CENTRAL BROADCASTING
UNIT (CBU)
GPS SATELLITE NETWORK
FIXED TRACKING
UNIT (FTU)
FTU
FTU
DIGITAL DATA
LINK (DDL)
DDL
DDL
DDL
Private Vehicle
Transceiver Unit
(VTU)
Mobile
Tracking
unit
(MTU)
RF
RF
RF
RF
RF
Fleet Vehicle
Tranceiver Unit
(VTU)
GPS
GPS
RF
Figure 1 - Vehicle Location and Tracking System Architecture
5.1 Mobile Components
The Vehicle Transceiver Unit (VTU) is the mobile component of Galaxy’s vehicle
location and tracking system. Each VTU contains a GPS receiver to determine location,
and a UHF radio for communications. VTUs run directly off of vehicular battery power
and are small enough to be easily hidden.
Vehicles equipped with VTUs can be commanded to continuously report their position,
speed, and status.
For anti-theft and security related applications, the VTU can provide limited remote
control of vehicle systems (e.g., lights, horn or ignition), as well as automated and
manual alarms.
5.2 Fixed Components
The tracking system’s infrastructure is comprised a powerful transmitter, Central