How to turn on GPS

First of all, let's understand the concept of GPS: GPS (Global Positioning System) is a new generation of satellite navigation and positioning system, which was developed by the United States in the 1970s. It took 20 years and cost 20 billion dollars. 1994 is fully built, and it has all-round real-time three-dimensional navigation and positioning capabilities by land, sea and air. After nearly 10 years of application in China's surveying and mapping departments, it shows that GPS has won the trust of the majority of surveying and mapping workers with its remarkable characteristics of all-weather, high precision, automation and high efficiency, and has been successfully applied to geodesy, engineering survey, aerial photogrammetry, vehicle navigation and control, crustal movement monitoring, engineering deformation monitoring, resource investigation, dynamics and other disciplines, which has brought a profound technological revolution to the field of surveying and mapping. Receiving GPS requires a special receiving chip. The most popular chip is SiRF, and others are Qualcomm, Broadcom, NXP, Infineon, Sony, stmicroelectronics (st), Trimble, SiGe, CSR and ADI. Because he uses a free satellite signal, as long as your handheld device has a GPS chip, you can locate it globally without turning it on. Some equipment suppliers confuse the concepts of AGPS and GPS in order to create gimmicks. AGPS uses mobile phone base stations for positioning, the accuracy can reach 500 meters at most, and it is impossible to locate in many places. Of course, after you have GPS, you can only see your latitude and longitude, but you can't show your specific location and place name, so you must install an electronic map. I hope my answer can help you!

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