What Is Assisted-GPS?

GPS is now a familiar term in cellular and satellite based communication technology. But what is known as A-GPS is yet to be understood by many of the consumers. A-GPS stands for assisted global positioning system. It is based on the technology that utilizes an assistance server to provide information to the GPS receiver. The advantages of A- GPS are mainly faster operation and lesser consumption of power. The user will also be benefited by longer battery life.

The standard GPS will take at times two minutes to acquire signals from communication satellites. In certain localities there will be interference from trees and tall buildings which hinder the performance of the receiver in acquiring signals. Similar interference may occur while the device is used indoors. Such interference from other sources is very common in the crowded urban localities.

When an assistance server is used, both the A-GPS receiver and the assistance server act simultaneously to boost the operating efficiency of the system. The process of gathering data from the satellites becomes faster. In the case of A-GPS there is a technical advantage too. Instead of depending on data from three satellites as in the case of standard GPS, the new system of A-GPS can operate with data from only two satellites.

Most of the modern mobile phones are provided with assisted GPS. It has become an accurate method to locate specific landmark as well as to monitor the movements of the people and vehicles. The enhanced version of GPS is faster and more accurate in getting information, as it reduces the time to find the current position known as TTFF (Time To First Fix). Another remarkable advantage is that the user can disengage A-GPS when not required during the journey. As roaming will enhance the cost, disengaging the facility when not required can make the system more economical.

Among many features offered to the cell phone users, A-GPS is much sought after product. It is possible to overcome the delay caused by the TTFF and also to meet situations where weak signals cause problems. The base station receiver is positioned in such a way to make collection of data from satellite hassle free and to provide information faster to the user. The system is more sensitive than the standard GPS.

A-GPS is incorporated invariably in all mobile phones by well known and reputed manufacturers, especially in the latest introductions. The users can receive data expeditiously in emergency situations. It is to be mentioned that the system is being utilized by the state authorities in providing emergency health care in rural areas. Mobile phone market is undergoing substantial changes with many new products and innovative features being introduced periodically.