基于单片机的低频相位及频率测量 低频相位及频率计的设计，要求本设计能够实时正确地反映正弦波的频率和相位的数值。-Based on the design the microcontroller low frequency phase and frequency measurement of low-frequency phase and frequency require the design of real time to reflect the values ​ ​ of

三步相移法测量圆柱横截面形貌,主要利用三步相移法求相位的模拟实验-Three-step phase shift method to measure the morphology of cylindrical cross-section, the main use of the three-step phase shift method for phase simulation

GPS测量数据处理可分为基线解算和网平差两个阶段，基线解算就是利用ＧＰＳ接收机接收到的 载波相位观测值做为基本观测值，对其进行差分处理。-GPS data processing can be classified as the baseline solution and flat screen two phase difference, baseline solution is the use of GPS receivers to carrier phase observation value