977 HF vehicle tracking system
The Barrett 977 HF Tracking System is an Automatic Vehicle Locating and Tracking Package which utilises the Navstar Global Positioning System (GPS) and an HF network consisting of a central control station and mobiles.
The computer based tracking system, located at the control station, automatically polls vehicles or vessels within the HF network, retrieving their position using a standard Selcall format based on CCIR493-2. The position of the vehicle or vessel being tracked is then displayed on a computer based map.
The control station consists of a PC loaded with the Barrett 977 HF Vehicle Tracking Software connected to a Barrett 2050 transceiver.
Vehicles or vessels to be tracked are fitted with a Barrett 2050 transceiver equipped with an optional external GPS receiver.
Configuration Flexibility
Monitors, tracks, follows or finds vehicles on maps stored on the control station computer.
Reports alarm conditions immediately upon receiving a distress signal issued by any vehicle or vessel and automatically displays its location on the appropriate map.
Warns when vehicles or vessels approach a user defined exclusion zone.
Vehicle or vessel positions can be recorded for later playback and analysis.
Provision to read and update textual information about specific locations on the map (way points). Waypoints are colour coded dots which are placed on the map by the user.
Provision to retrieve and store textual information about every vehicle or vessel in the fleet.
Selective call options
Fitted with both a CCIR 493-4 based, four and six digit system of which the protocol is available for free distribution and an OEM protocol that is fully compatible with other major HF manufacturers four and six digit systems that utilise encryption.
Displays the current mobile position as an icon (various sizes), continuous track or a trail of points. Clicking on a trail point with button 2 will display the Selcall ID, date, time, latitude and longitude.
Telemetry displays the mobile Selcall ID number, speed, distance, calculated arrival time and bearing to a selected destination, which can be a location on the map or the location of another mobile.
Maps can be scanned by the customer using an A4 flat bed scanner and registered using the inbuilt registration system in the tracking software.
Displays distances in metres, kilometres or nautical miles.
Allows you to define areas on the map within which collision detection warning will not be activated (blind zones).
System accuracy in the order of 15 to 30 metres (when subject to the effects of selective availability 100 metres).
Transceiver function access which includes PAGECALL, STATUS CALL and the ability to control most main transceiver functions from the computer screen.
System Components
Central Control Station
Barrett 2050 HF Transceiver fitted with the RS-232 control option, a Barrett 2022 mains power supply unit (or a solar power supply) and a suitable base station antenna such as a Barrett 912 broadband. The Barrett 977 tracking package (which includes cables from computer to transceiver) is loaded on a suitable PC, laptop or notebook.
(Note:-PC’s laptops or notebooks must have 2 compliant serial ports. USB to serial adaptors are not compliant serial ports.
It is recommended that a dual PCMCIA serial card is used to provide compliant serial ports on laptops or note books that only have USB ports. A separate serial card should be used with PC’s that only have USB ports).
Vehicles
Barrett 2050 HF transceiver fitted with a GPS software option and a GPS receiver and a Barrett 910 Automatic Tuning Mobile Antenna. (Note:- an existing GPS receiver can be used if it is has a compliant NMEA 0183 output).
Vessels
Barrett 2050 HF transceiver fitted with a GPS software option and an a GPS receiver, a Barrett 911 Automatic Antenna Tuner, a suitable whip or long wire antenna and a Barrett 922 Power Supply Unit (if AC power is available) or a 13.8VDC power feed. (Note:- an existing GPS receiver can be used if it is has a compliant NMEA 0183 output).