查阅相关资料，自己总结IGS精密星历文件，例如clk钟差文件，sp3文件 每行数据代表什么

这是一个数字秒表的设计。几时周期为0.01s-1h。带有计数器的清零端，还有一个秒表的计时起止控制开关，最后计时信息显示在数码管上。

basic gatable clock which can gate and ungate it s ouput.

利用单片机产生自己需要的时钟频率，并且可以使用到各种芯片上去

下载、解压缩、复制到sd卡 然后进入相册，找到sys-clk，打开就可以设置不同场景下的超频了 如果需要特斯拉调用，但是显示没有启动，需要用相册里的工具盒子先设置sys-clk的开机启动 工具盒子是：DeepSea-Toolbox插件

MSP430F149系统时钟详细配置下IAR工程文件包括具体时钟分析，对应IO输出波形到示波器观测。

TI官方例程

STM32例程Example_TIM_CLK.7z

Thus far, the IGS has produced clock results only for the GPS satellites and these are tabulated and distributed at the 15-minute intervals used in the sp3 orbit ephemerides files. There is much interest in increasing the satellite clock interval to 30 seconds (e.g., to overcome SA effects on interpolation) and also in producing station clock results (at some appropriate interval, probably 5 minutes). In principle, the sp3 format could continue to be used for both of these extensions, but it would be wasteful considering that the vast majority of the file space is set aside for orbit information. Also, the variety of other clock information that also needs to be exchanged does not lend itself to the sp3 format.

MT7621 + MT7915D AX1800的硬件参考设计HDK