Newell Shenzhen Electronic Technology Co., Ltd., we often say GPS positioning module called user part, it's like "Radio" receive the same satellite broadcast demodulation C / A code signal to a frequency of 1575.42MHz. GPS module does not broadcast signal eight boards, a passive position. Flex by pseudo-distance computing and board each satellite, determined using the distance intersection method derived receiver longitude, latitude, altitude and time correction amount of these four parameters, is characterized by fast point, but the error is large . Initial positioning module requires at least four satellites involved in the calculation, called 3D positioning, three satellite positioning can be achieved 2D board, but poor accuracy. GPS module via serial communication port continuous positioning information and auxiliary information output NMEA format for the recipient to select applications. Newell Shenzhen Electronic Technology Co., Ltd. If the module is in position to put the time after a long time, or modules in the transport position to place hundreds of kilometers away, so there ephemeris internal Bluetooth module circuit board, but this is wrong ephemeris or does not have a reference significance. In these cases, the positioning time may be a few minutes or even longer period of time. Therefore, the general GPS module to module inside the factory, such as ephemeris data cleared away, so that customers can get the module to quickly locate cold start mode. Rigid-Flex PCB _ Newell record (certified) _ board provided by the 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.