effect measuring accuracy

In the displacement measurement system of scattering surface laser Doppler effect, the measuring accuracy is affected by the weakly Doppler signal that may be lost or discontinuous.

利用激光多普勒效应实现固体面内位移测量时，由于散射光的多普勒信号十分微弱，有时还出现淹没或不连续，影响位移测量精度。

It introduces circuit structure, operating principle and solves problems of temperature shift and dc constant-current power supply quality effect on measuring accuracy.

文章介绍了电路结构和工作原理以及消除引线电阻、电阻应变片的温度漂移和直流稳流电源供电质量对测量准确度的影响等问题。

The factors to effect the measuring accuracy of digital photogrammetric systems are analyzed and the methods to improve the measuring accuracy are presented.

对影响数字摄影测量系统精度的因素进行了分析，并提出了提高测量精度的方法。