全球定位系统的端口配置，开放，全球定位系统的数据分析和分析。GPS状态信息…

gpsbabel for gps testing

GPS port finder for Ambicom GPS receivers

一个GPS网WGS_84平差坐标向地方独立坐标的转换文档，比较全-A GPS network adjustment WGS_84 independent coordinates to local coordinates of the conversion document, compare the whole

以前用VB，C#等很轻松将GPS信息解码。但是最近要使用C语言，（网上有一个VC的按位解的）苦于C操作字符串的难度，请各位大侠放出一份C代码解GPS。 我先贴上我用C解的代码，是直接将VB和C#的思路转过来的。 现在可以读出经度或纬度-before using VB, C#, etc. is easy to decode the GPS information. However, the recent use of C language, (the Internet by a VC-Solutions) cited a string C operation difficult, Please Shanhaiguan released a GPS Solution C code. I affixed my first solution with C code directly to C# and VB of the ideas turn. Can now read latitude and longitude

基于arduino的GPS地图导航系统 SPI接口。采用Atmega 328为主控芯片 需要采用滤波算法过滤 串口速率与GPS模块要设置一致，接线方式如下： //TFT SDA -> UNO 11 //TFT SCK -> UNO 13 #define TFT_CS 10 // Chip select line for TFT display #define TFT_A0 9 // Data/command line for TFT #define TFT_RST 8 // Reset line for TFT (or connect to +5V) #define TFT_LED A0 #define SD_CS 4 // Chip select line for SD card //SD MISO -> UNO 12 //SD SCK -> UNO 13 //SD MOSI -> UNO 11 //GPS tx - UNO rx //GPS rx - UNO tx #define BTNZOOMIN 2 #define BTNZOOMOUT 3

对于WAAS系统的最终衡量标准是可用性强调了导航系统的运行经济性。它被计算为时间的WAAS系统提供位置固定的准确性，完整性和连续性的指定级别的分数。最低运行性能标准（MOPS）的WAAS指定必须在99.99999％的概率得到满足的差分改正导航解决方案的垂直防护等级（VPL）和水平防护等级（HPL）的计算。因此，真正的误差不能超过保护水平不止一次107秒钟。如果计算出的保护水平超过了相应的警报上限则报警被丢弃的操作无法继续进行。如果操作已经开始这个条件是连续性违反和复飞，必须进行。否则系统被声明为划时代不可用。

GBT_18314-2001全球定位系统(GPS)规范  GBT_18314-2001 global positioning system (GPS) specification

GPS测试程序12864液晶（并行方式）    可以得到经纬度，时间，対地速度，对地方向，是根据逗号结点来解析的程序。觉得作为刚开始学习gps的朋友可以下载，对于理解gps很有帮助。。。这个代码很不错。不过你自己可以继续修改。是学习的好程序

通过matlab的m文件对gps卫星信号进行模拟-Gps satellite signal simulation

The idea behind differential GPS is to remove as much errors as possible from the range measurements by establishing these errors at a reference site. In its most simple setup, a GPS receiver is located at a well surveyed position and its (pseudo) range measurements are compared with the actual calculated range from this receiver to the SV s. The differences between measured ranges and calculated ranges at the reference receiver are applied as corrections to the ranges measured by other receiver(s) close by.