Could you elaborate on this ? How does your CDMA phone get information from GPS ? Are you saying GPS information is available by default on a CDMA network ? Or does it require some additional hardware ?
I understand that CDMA uses time of arrival of signal from base station, strength of signal, and angle of arrival to calculate location. GSM uses one or more of the above. I’m not clear on which ones.
I understand that CDMA (by itself, without GPS) offers a tracking accuracy of upto 125 metres. I’m not clear on where GPS fits into a CDMA mobile phone network.
I’m not clear on the tracking accuracy that GSM offers, and how it compares with what CDMA offers.
I am assuming that GPS offers the highest accuracy, but not necessarily the greatest reliability in a dense urban environment.
I am assuming that GPS requires a minimum of 3 satellites to be able to calculate location. Is this correct ?