解析GPS 串口的NMEA报文的类。有GGA,GSA,GSV,RMC,RMB等报文的解析

gps demo takes internal gps word and writes it to screen

GPS主系统是居心叵测的老美发射运行的卫星系统，包含了27颗能持续发送地理位置海拔高度的卫星，24个正常使用，3个备用，这些卫星平均分布运行在六个轨道上。一般来说，在地面-GPS is the main system is very much ill-old US-run satellite launch system, contains 27 to continue to send location altitude satellites, 24 of normal use, three back-up, the average distribution of these satellites orbit in six runs. Generally speaking, on the ground

GPS设计全功略，很好的书籍值得研究一番，希望对你们有用-GPS design full-sina, well worth studying books about it, hope that useful to you

从RINEX格式的GPS观测文件（即O文件）中分割提取想要的某段观测数据的C++程序-GPS observations from the RINEX format files (ie O file) to extract the desired data in a certain period of observation C++ program

WGS84BJ54两种空间直角坐标系的转换,由空间直角坐标到大地坐标的转换.-WGS84BJ54 two space rectangular coordinate system conversion, from the Cartesian coordinates of the space geodetic coordinates of the conversion.

该代码产生m序列,能在扩频通信中的信息的扰码和扩频.-The code generated m sequence, spread spectrum communication in the information in the scrambling code and spread spectrum.

SIMCOM SIM508Z RoHS Technical Data Sheet

中国联通 gip协议代码,应该会有用的，大家看看，我也没怎么仔细看-China Unicom gip agreement code should be used, we look at, I have not had a close look at how

该程序是信号的多普勒现象，通过设置不同的参数，可得到不同的现象，具有一定的参考价值。-that the procedure was the Doppler signal, by setting different parameters, will be different, has some reference value.

提出了利用精密单点定位(precise point positioning,PPP)技术进行海啸预警的方法,并利用TriP软件对实测浮标数据进行了处理,将得出的海面高数据和海啸波模型叠加进行了模拟分析。仿真结果表明,利用精密单点定位技术进行海啸预警,能够监测判断海啸的发生,并获得海啸波到达海岸的波高和时间,提供一定的预警信息。 -Made use of Precise Point Positioning (precise point positioning, PPP) technology for tsunami early warning methods and the use of Trip software buoy measured data were processed, will come to the surface of high tsunami wave model data and conducted a simulation analysis of superposition. The simulation results show that the use of Precise Point Positioning for the tsunami early warning, to monitor to determine the occurrence of the tsunami, and tsunami wave reached the coast, wave height and time, provide some early warning information.