source:truck tracking webfleet solutions release time:2023-02-21 Hits: Popular:realtime gps tracker online
Because GPS/Beidou positioning must be in an open outdoor place to search for and locate the satellite, that is to say, the satellite GPS locator may not find the satellite positioning signal even in an open outdoor place, for example, under the roof or under the tree. At this time, the locator will automatically change to LBS or WIFI positioning, so it is not recommended to filter LBS and WIFI data.
As we all know, there are three main sources of positioning data for civil GPS locators: satellite positioning data, base station positioning and WIFI positioning data. Only the satellite positioning data is directly displayed in longitude and latitude. The locators have high power and high power consumption when connecting satellites for positioning, so if the connection fails within the time set by the program (generally 60 seconds), the locators will stop searching for satellites and report the nearby base stations and WIFI hotspots as positioning reference, Then, the base station or WIFI hotspot is parsed into longitude and latitude and displayed on the positioning APP or web map through professional data service companies such as Google or Goldman Sachs.
As a matter of fact, the base stations of mobile phones in sparsely populated areas are relatively far apart, especially the 4G base stations are newly built, and the base station codes are often changed. Therefore, data companies such as Google Goddard have not included all the base station data, which will lead to inaccurate positioning of some base stations and wifi or can not be parsed normally, which is an important reason for the loss of some tracks, At present, the whole GPS civil positioning industry has no good solution.
Finally, I have repeatedly stressed to users that most of the size of micro portable GPS locators is occupied by batteries, especially for pets and personnel locators, 2/3 of the space is occupied by batteries, so when designing such products, we should consider not only the small size and portability, but also the long standby time as possible, and also the accuracy of positioning, With the current battery technology, it is impossible to achieve perfection in all three aspects, so we must make some choices. Therefore, when designing such products, we will select the size of the battery to design the appearance of the product according to the standby time, and then optimize the power consumption of the positioner through software. The most common software optimization method is to switch to LBS or WiFi positioning to reduce the power consumption of satellite positioning when the GPS signal is bad. In this way, we can ensure that the positioner has at least two days of standby time under the minimum size.
We must be rational to know that GPS locators can not provide accurate locations at any time, but to take a step back, although it can not provide the most accurate location, it is of great significance in terms of the convenience it brings and the precious time it earns when reducing the search range from aimless search to a half distance of 100 meters or even 10 meters when searching for people and objects.
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