The difference between GPS positioning and base station positioning.GPS Tracker for vehicles Processing

　　1. Reliability

　　Car GPS manufacturers have learned that the two positioning systems have been verified for a long time, and their reliability is high. However, because the ownership of the GPS satellite belongs to the US government, it does not rule out that due to various irresistible factors (such as war, economy, etc.), existing existence, existing A certain risk. The base station positioning is based on my country's own technology and services, with high reliability.

　　2. accuracy

　　There are various carrier waves in GPS positioning. The P code is also called precision code. The positioning accuracy is generally about 30cm, which is generally used by the US military. The latter has a simple data processing and low requirements for positioning conditions. There is no problem of fuzzyness of the weekly blur. It can easily achieve real -time positioning, so it has been widely promoted in civil use. The position positioning accuracy of the base station is related to the positioning technology adopted. The probability of less than 50 meters is 67%, and the probability of positioning accuracy within 150 meters is 95%.

　　3. Use cost

　　The GPS satellite signal used by the GPS receiver is completely free, so the simple GPS positioning has almost no cost. The base station positioning uses services based on operators, so a certain service fee must be paid every month.

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