This Paper introduces principles of high - accuracy - rate system based on phase difference to voltage converting and realization of hardware circuit,it also goes into details on the keytechniques of each part.
本文介绍由相差／电压转换原理构成的一种高精度速率系统的原理及硬件电路的实现，并对各环节的关键技术进行了详细阐述。
Using modulation signal and gate circuit, the phase difference of two-way input signal can be measured, and the transmitting time of modulation signal in optical fiber can be calculated, therefore the velocity of light is obtained.
采用调制信号 ,应用门电路测量了两路输入信号的相差 ,计算出调制信号在光导纤维中的传输时间 ,从而得到光
This experiment mainly serves the composition of two perpendicular oscillations, When phase difference changes.
当位相差变化时合成图形的旋转方向也随着变化。
With the case of any orientations of optical axis in uniaxial crystal,the versatile and precise formula of the phase difference for a birefringent plate is derived by means of Huygens principle.
在单轴晶体光轴任意取向的情形下应用惠更斯原理导出了双折射滤光片产生位相差的精确公式,结合几种熟知的特殊情形进行了简要讨论,给出完全一致的相关结果,揭示该普遍公式的正确性。
Results show that: for the unstable coupled waves in the air-sea system,the air disturbance wave goes ahead of the sea disturbance wave by 0 to π/2 in the phase,and especially when the phase difference is π/4,this sp.
结果表明:对于海气系统中的不稳定耦合波,大气扰动在位相上超前于海洋扰动,位相差范围0到π/2,特别当位相差为π/4时,出现最不稳定海气相互作用;大气和海洋扰动振幅之间的关系由风应力系数和海洋加热系数的相对大小决定,大气扰动振幅可以小于海洋扰动振幅,也可以大于海洋扰动振幅;深海作用系数对于海气耦合波的空间结构总体影响很小。
Simulation shows that the phase calibration method can minimize phase error of the network while improve antenna s beam pointing and restrain parasitic sidelobe.
分析了相控阵天线中相位误差来源;以线阵为例,详细讨论了网络相差对天线波束指向和副瓣电平的影响;提出了一种基于正弦曲线拟合的相位校准方法。