| What does GPS stand for? |
| | GPS stands for Global Positioning satellite system |
 |
| What is GPS? |
| | GPS is a satellite-based radio navigation system which consists of three segments - The satellite constellation
- Ground control network
- User equipment.
The satellite constellation comprises satellites in low earth orbit that provide the ranging signals and navigation data messages to the user equipment. The ground control network tracks and maintains the satellite constellation by monitoring satellite health and signal integrity and maintaining the satellite orbital configuration.
Furthermore, the ground control network also updates the satellite clock corrections and ephemerides as well as numerous other parameters essential to determining user position, velocity and time (PVT). The user equipment receives signals from the satellite constellation and computes user PVT.
|
|
| How is GPS used? |
| | GPS receivers collect signals from satellites in view. They display the user's position, velocity, and time, as needed. It also display's additional data, such as distance and bearing to selected way points or digital charts.
The GPS concept of operation is based upon satellite ranging. Users determine their position by measuring their distance from the group of satellites in space. The satellites act as precise reference points.
|
|
| Who uses GPS? |
| | GPS is used to support: - Land, sea, and airborne navigation
- Surveying
- Geophysical exploration
- Vehicle location systems
- Transportation systems
- A wide variety of other additional applications.
Telecommunication infrastructure applications include network timing and enhanced 911 for cellular users. Global delivery of precise and common time to fixed and mobile users is one of the most important, but least appreciated functions of GPS. |
|
| What kind of orbits are the GPS satellites in? |
| | The GPS satellites operate in circular 20,200km, 12-hour orbits at an inclination of 55 degrees. They are not in geostationary orbit. |
|
| How vulnerable are GPS satellites to jamming and interference? |
| | GPS satellite signals, like any other navigation signals, are subject to some form of interference. As with all navigation aids, interference, whether intentional or unintentional, is always a concern.
A number of methods for minimizing interference have been identified and tested and others are being investigated. We are also working to make sure augmentation systems detect and mitigate these effects. |
|
| User Equipment |
| | The user equipment often referred to as “GPS receivers”, captures and processes L-band signals from the satellites in view for the computation of user position, velocity and time. |
|
| What additional services are provided? |
| | At no additional cost, we have customer care staff waiting for your enquiries. You also get to receive alerts via SMS on the location of your car. |
|
| What happens if the GPS cannot perform scheduled services? |
| | Just in case. The information for each date’s services is in the computer and are kept up to date. |
|
| What are the advantages of installation of GPS in my car? |
| | Your get to know where your vehicle is, at the exact location at the exact time all the time. Read more on Merits of Tracking
|
|
