Abstract:In this paper,the basic principle of aircraft's Automatic Direction Finder(ADF) measuring error using the GPS receiver for flight calibrating is introduced and its calibrating error is analized.

Abstract:The measuring method and it's implement scheme of the laser precision measurement of torpedo thread leaded wire coil are analized in this paper.After adopting laser precision measurement,the accuracy of the testing equipment has been increased evidently and the key problem effecting the quality of the product and the transfer method of the quality value of stretching strain have been resolved.And then the vacancy in this field has been filled.

Abstract:The method of collimation by using the CCD pickup camera in the aperture measurement is discussed in this paper.It introduces the method of an image processing.

Abstract:The operating principle and relative application circuit of pressure resistance sensor are presented in this paper.And an applied example is given to show all of those.

Abstract:A laser micro displacement measuring system for measuring dynamic micro displacement is introduced.This system is based on Doppler effect and the He Ne laser is taken as its light source.The system deploies the frequency conversion for telling direction,high speed dynamic acquisition system for CCD vedio signal,micro computer processing system and interference image handling software etc.Comparing with the traditional measuring method,its accuracy,sensitivity and stability are more raised and its error is more decreased.The full automatic measurement of micro displacement is realized.

Abstract:最新研制的接触式激光量块干涉仪主要用于测量一、二等量块的中心长度，其长度测量不确定度达到（0.02 0.2L)μm。文中介绍了其工作原理、测量不确定度分析，给出了量块测量的验证数据。

Abstract:When standard turntable runs,its angle speed fluctuation is critical for the reliability of calibrated device.The importance and the feasibility of fluctuation of angle speed are discussed here,and the method of fluctuation text is introduced.At last the data of angle speed fluctuation is analyzed by processing method of time field signal.

Abstract:The basic concept,structure and bus measuring techniques of the virtual instrument are presented.The development and software design of the virtual instrument for facing the object are discussed.

Abstract:The dynamic equation of force transducer is set up by using the FEM in this article.The simulating analysis of several effects on the dynamic output of transducer are made interms of the model.And then the knowledge of the error which is caused by calibrating statically while using dynamically of force transducer for calibrating the dynamic load of fatigue machine is acquired.

Abstract:Through the analysis of uncertainty of bell jar type gas flow standard equipment,the compound standard uncertainty and expansion uncertainty of this standard equipment are determined,then the foundation for gas flow verification is supplied.

Abstract:This paper introduces the calibrating principle,method and condition of multifarious antenna based on the Ferris transmission theory and discusses the design for the computer aided calibrating antenna.The uncertainty of measurement is analyzed in detail.

Abstract:After entering the WTO,the recent situation and some faced problems of metrological work are analized and thought.And the solving method is proposed superficially.