How Does GPS Work?

GPS satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. GPS receivers take this information and use triangulation to calculate the user's exact location. Essentially, the GPS receiver compares the time a signal was transmitted by a satellite with the time it was received. The time difference tells the GPS receiver how far away the satellite is. Now, with distance measurements from a few more satellites, the receiver can determine the user's position and display it on the unit's electronic map.

What is GPS?

The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the U.S. Department of Defense. GPS was originally intended for military applications, but in the 1980s, the government made the system available for civilian use. GPS works in any weather conditions, anywhere in the world, 24 hours a day. There are no subscription fees or setup charges to use GPS.
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GPS Fleet Management - Main features

The Fastest, Easiest and Most Effective GPS Tracking System for Your Business

The system includes a live tracking feature that allows you to view the location of your vehicles in real-time, 24 hours a day. Each fleet vehicle is represented on a Google map which updates continuously to give you accurate and reliable location data. You will know the exact location of your vehicles at all times.

With the hyper-zoom tool in live tracking, you can zoom all the way down to street level with complete accuracy to pinpoint the exact location of each vehicle.

In addition to location data, our solution provides a list of your vehicles showing the status of each. You’ll know when a vehicle is started up and shut down, idling status, location and speed.

Main features

Tracking Powered by Google
The system with Google mapping provides fleet owners with an incredible set of tools to manage their vehicles more effectively than ever.

  • Hybrid satellite/street view shows exact vehicle location
  • Provide drivers with accurate routing
  • Provide customers with accurate arrival times
  • Improves response times
  • Increases jobs completed per day
  • Ensures your vehicles are secure
  • Improves customer satisfaction


Route Replay
The feature enables you to view a live playback of each journey taken by your vehicles. Watch your vehicle travel on the map from start-up to shut-down with arrows indicating the direction traveled. Minute-by-minute location and speed details are displayed simultaneously.
  • View exact routes taken by any vehicle
  • Easily monitor driver behavior
  • Provide absolute proof of service for customers
  • Improve routing efficiencies
  • Reduce fuel costs
  • Improve customer service
  • Increase productivity
GPS Vehicle Tracking Alerts
GPS Fleet Management alerts are critical for monitoring unconventional or undesired driving behavior. By setting an Alert, you will be notified the moment any such vehicle behavior occurs through an automated e-mail, sms which can be delivered to any number of key recipients.

Advantages of GPS Vehicle Tracking Alerts

  • Instant notification of any unwanted behavior
  • Monitor vehicles through any e-mail, sms
  • Take immediate action on an event
  • Improve safety
  • Increase fleet productivity

Send location information through SMS
End-user can receive location information throgh sms without login web system. Simply send message "location VEHICLECODE" to ingrated SMS Gateway, the system will send message to him/her immediately.
Ex: Dear sir/madam, Your vehicle [Code:50B1-123456] was in 13 Nguyen Trai Street at 21 August 2011 17:08.

Integarated SMS Gateway (GSM Module)
With integarated SMS Gateway - GSM Module, you not only can can send alert messages real -time but only use to other purpose (such as you can use this sms gateway for another system )

Digital Horizon GPS Fleet Management now supports Vietnamese and English