P901 is the thinnest smart walkie-talkie with real time GPS tracking function.It can be used in any place with GSM signal regardless distance limitation.We've already tested one key push-to-talk N...
The positioning accuracy can be investigated under static and dynamic conditions, and the effect of dynamic positioning is better than that of static positioning. The nominal positioning parameter...
GLOBAL Positioning System, referred to as GPS, that is, global satellite positioning system, has been widely used in recent years, and has generated considerable demand for GPS products. And with ...
When it comes to positioning accuracy, we have to talk about SA and AS. What is SA, AS? GPS signals have two types of C/A codes and P codes. The error of C/A code is 29.3m to 2.93m. Common rece...
1. Composition of GPS system GPS gloabal Positioning System, which is built in the United States. It is mainly divided into three parts, the control station on the ground, the satellites flying i...
There are many kinds of GPS products, but it is not necessarily all good with three generations of chips. The three generations of chips are just GPS The core components of the product, like the ...
Antenna is an important factor: GPS antennas are used in common GPS products such as handheld, PDA, Bluetooth, G-Mouse, etc. Source, passive and even omnidirectional antenna, among more than a d...
Users only need to have a general understanding of the specific technical indicators of the three-generation chips, and more importantly, compare and observe whether Has the following characteris...
Users only need to have a general understanding of the specific technical indicators of the three-generation chips, and more importantly, compare and observe whether Has the following characteris...
GPS boot positioning is divided into three types: cold start, warm start and hot start: Cold start: The following conditions are all cold start. When using it for the first time; when the ephemer...