Do I have to have a flow or a phone card? How much is the cost? The most simple, only positioning it?To know how to explain. What is the core of GPS positioning? Mobile phone signal flow or signal? Or a single chip?
A single chip can not work properly, the need for other circuit and battery support.General mobile phone traffic, data should be uploaded to the positioning platform.GPS navigator does not need to go traffic, through GPS positioning and car navigation directly on the map.Rui Feng Huizhi GPS to answer your questions
The core is the GPS chip, the phone receives the satellite signal through the calculation of the chip to get your position, you can not flow.There is a AGPS technology, you can first use the mobile base stations to determine the approximate location, and then through the analysis of the signal receiving chip to which satellite positioning, this way more quickly, but want to consume a little data flow.
Not necessarily a mobile phone, there are a lot of handheld terminals. But there must be a traffic card, because the GPS locator is to get your location information through the GPS module, and then through the traffic card to send information to the platform, you can see your location, trajectory and other functions through the platform.As for the core of GPS positioning is of course the GPS module, a personal locator GPS including GPS module and GSM module, the GPS module is used to receive satellite positioning information, and the GSM module is to send the location information to the platform.
