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  • Causes that affect GPS positioning accuracy

    GPS brings us a lot of convenience in real life, its most important function comes from its accurate positioning. Whether a car navigator guiding us to the right direction or a handheld device that gives us precise latitude and longitude to point in the right direction. As well as the practical application effect of GPS products in industry, logistics and in many other industries, it has been proved that the positioning precision of GPS products is an important pillar for its wide application.


    However, in practical use the GPS positioning accuracy may not meet our need. Many users responded that when they used car GPS products, the vehicle remained stationary but the vehicle position icon displayed on the navigator screen swung around the map. This is what we call satellite signal drift. In addition, the actual location is not consistent with the position shown on the map, and the location deviation is also a common phenomenon encountered by many car users and handheld users. So what are the factors that affect GPS positioning accuracy?

     

                           


    The GPS nature


    Many people might be unexpected that the power of the GPS would also have an impact on the positioning effect. It's understandable that GPS locators need to receive GPS signals and search for them. Like our phones, if you turn on a wireless connection, it will searches for a network signal every once in a while, which can be quite power-consuming.


    Ways to install


    Many owners will hide the GPS device in a covert place in order to prevent it from being stealing. This is good for security, but be aware that the signal of the device cannot be blocked. One of the features of GPS signals is that they can't penetrate metal and concrete structures, so there should be no metal shielding over the GPS antenna when installing it. In order to protect the car, many car owners will put film on the car body, which has a great influence on GPS signal reception, and even directly block the signal, which must be noted.


    When you buy a GPS, on some devices you'll see a little line that says, "GPS antenna reception, horizontal orientation," or "this orientation up." The meaning of it is to let the owner put GPS antenna surface level upward when install it, horizontal gradient should not be greater than 15 °. The purpose of such placement is to better receive GPS signals.


    In addition, please pay attention to electronic products should prevent signal interference, and GPS is no exception. It is important to keep away from electronic devices such as in-car audio and video equipment, and prevent conduction interference and radiation interference.


    Working environment


    GPS belongs to electronic production and it has the temperature using range. Such as its working temperature  scope is 25 ℃ to  75 ℃. When the positioning device work in this temperature, its working effect will not be affected, and once the temperature exceeds this range, the service life and capacity of the device will be greatly reduced. The reasons are simple when in low temperature, the electrolyte activity decreases and the electrolytic reaction slows down or stagnates.


    In addition, thick clouds, fog, rain and snow weather will cause GPS positioning to produce a certain deviation or drift. The vibration and dust or inletting water of the equipment will also affect the normal operation of the equipment. Therefore, in the process of using GPS locators, attention should be paid to waterproof, shockproof, keep it dry and clean and in a suitable temperature.

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