Shenzhen Electronic Technology Co., Ltd. Newell GPS module has a number of channels parameter circuit board, for example, 20-channel, it indicates that the module maximum 20 satellites simultaneously and establish communications, three 2D positioning satellites, data is unstable, the module Only after three or more also receive a satellite signal phone circuit board, after a complex operation to obtain the correct positioning data, the more communications satellites if both the number of stars ten-layer circuit boards, modules will be able to get faster the more accurate positioning data , usually 4 to 11 at the same time and at the same time satellite communications under the surface of the earth in general urban environment. Newell Shenzhen Electronic Technology Co., Ltd. Chong positioning accuracy GPS module depends on many aspects, such as from the GPS system and orbit satellite clock error difference, the number of visible GPS satellites and the geometric distribution, solar radiation, atmosphere, multipath effects. Further, with a GPS module, but also because of the quality of the antenna and feeder, the antenna position and direction, the test period, the range and direction of the open sky, weather, PCB design causes a different positioning errors. Even when the same manufacturer with a GPS module uses a different type of antenna diversity simultaneously tested, there will be differences in the amount of static drift. Multi-layer circuit board _ Newell record (certified) _ board provided by Shenzhen Electronic Technology Co., Ltd. Newell. Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com) Guangdong Shenzhen, PCB's leaders over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Newell record in leadership with the staff warmly welcome all inquiries negotiations to create Newell create a better future.