what is assisted gps and glonass
A-GPS stands for Assisted Global Positioning System. While it works on the same principles as a GPS (explained below), the difference here is that it gets the information from the satellites by using network resources e.g. mobile network, also called assistant servers.-GPS and GPS are different navigational aids that both use information from satellites to determine their exact location on Earth. GPS stands for Global Positioning System. A GPS device communicates with 4 or more satellites to determine its exact location coordinates (latitude and longitude) anywhere on Earth.
A-GPS is extensively used with GPS-capable cellular phones, as its development was accelerated by the U.S. FCC 's 911 requirement to make cell phone location data available to emergency call dispatchers. It can supply orbital data or almanac for the GPS satellites to the GPS receiver, enabling the GPS receiver to lock to the satellites more rapidly in some cases. 2  The network can provide precise time. 3  Mobile Station Assisted (MSA): Calculation of position by the server using information from the GPS receiver.
GLONASS is a global satellite navigation system, providing real time position and velocity determination for military and civilian users. The satellites are located in middle circular orbit at 19,100 kilometres (11,900 mi) altitude with a 64.8 degree inclination and a period of 11 hours and 15 minutes.LONASS is a global satellite navigation system, providing real time position and velocity determination for military and civilian users. The satellites are located in middle circular orbit at 19,100 kilometres (11,900 mi) altitude with a 64.8 degree inclination and a period of 11 hours and 15 minutes.