Abstract:The problems existed in the calibration based on indexs given for airborne ATE are analysed,On the basis of characters of ATE,the principles and gists of the indexs are brought forward and assure the measurement and calibration for ATE effience and accuracy.

Abstract:According to the aim, the cost-effectiveness decision-making and estabilished for martial metrological-support, and we study its first step optimization research of model is concrete implementing. Considering the situation,where LCC cannot be assessed quantitatively, a kind of multiattribute assessment method for cost-efectiveness decision-making is proposed. This method can join with MITA which could determine the factors weight and TOPSIS which could give qualitative attributes such as LCC and can deal with imperfect index preference relationship. This method by the example can improve the validity and the precision of effectiveness evaluation, and it is of some reference value to the related research and decision departments.

Abstract:The realization of calibration accelerometer system with random vibration excitation is introduced in this paper. Using the absolute calibration method of random signal sensor, some perfect accelerometer frequency response curves are abtained. Comparing traditional methods, the method lodged in this paper can improve efficiency.

Abstract:The resonant frequency and value Q of the resonant sensor can be obtained by calculating its frequency characteristic. The frequency characteristic measurement of the resonant sensor requires a platform that could measure a great number of resonant sensors. A universal frequency characteristics measuring platform is presented in this paper. A novel burst resonant frequency measuring method is also presented, that utilizes a chirp signal to excite the resonator. The free vibrating signal of the sensor is detected and the free vibrating frequency of the sensor just is the resonant frequency.

Abstract:The paper mainly introduces the conception and the application and the development of multi-component measurement and calibration technology.Then introduces the technique target and the structure design of multi-component dynamometer(include cylindrical and assembled structure) during the Ninth Five-year-project period.

Abstract:In order to trace to the source of electrostatic charge decay test apparatus,a verification device is developed.The device consists of double exponential standard decay voltage source,standard impulse voltage divider and computer data acquiring and processing system in which LabWindows/CVI software is used.The total extended uncertainty degree is 0.66%.

Abstract:The precision measurement of ultra smooth surface roughness is most important part of the precision manufacture. In order to study how does the topography apparatuses influence on the measurement result, the K9 glass material selected is polished in float polishing method. Using four different principle topography apparatuses, the ultra smooth surface of the workpiece is measured. Comparing to the different measurement results, the practical precision of the workpiece is got. By analyzing the principle of different topography apparatuses, decision factor of the resolving power, result of the error and the influence on the roughness measurement, the roughness measurement criterion and the principle of how to select the topography apparatus are got.

Abstract:With the continuous improvement of the band of digital oscilloscopes,the wide bandwidth digital oscilloscopes are affected by high frequency effect more apparent and must be used more carefully,which puts forward stricter requirement about verification equipment and connections between different units. How to reduce or eliminate the bad effects and fully excavate the potential of the verification equipment,in order to realize accurate and entire verification to the greatest extent on the basis of normal verification items and methods of digital oscilloscopes,the paper studies the possibility of these items and adopted measures,especially discusses in detail the verification of high frequency characteristics about their bandwidth and transient response,so the complete verification of wide band digital oscilloscopes is realized.

Abstract:In this paper,the calibration method for lock-in amplifier is described.Some realization ways of calibration are discussed,including the phase sensitive detectors characteristics,full-scale sensitivity internal noise,dynamic reserve,dynamic range and time constants.Combining with to the calibration system,the uncertainty of measurement of the typical parameter is evaluated.

Abstract:The special test equipment is regarded as the main measure of the performance evaluation in the way of product development and delivery,it's calibration method needs to satisfy the requirement of traceability of value quantity of the product.In this paper,the calibration serial methods of special test equipment and in the way of their application are described.The idea and situation used of these methods are presented also.

Abstract:In this paper,it is described that the uncertainty of evaluation results of both DC gain and offset of the signal processing circuits of laser doppler velocimeters(LDV),which is by using the least mean square method.It is including the courses of analysis and evaluation of uncertainty of it.Some error sources of DC gain and offset evaluation are discussed,including the errors of signal source,the measurement errors and the linearity of device under test,the influence of quantization error of linear system,the environment influence and the others.Several main methods of decreasing the evaluation errors and evaluation uncertainty have been proposed.They are environment influence controlling, in order to decrease the signal uncertainty of source.In an example of experiment,the analysis and uncertainty evaluation results of both DC gain and offset of LDV by using the method in this paper is presented.The courses and conclusion of analysis and uncertainty evaluation of both DC gain and offset in this paper,can be applied to the uncertainty evaluation of measurement standards of both DC gain and offset,can also be used in the uncertainty evaluation of DC gain and offset themselves.

Abstract:The principle of measuring the fiber optic chromatic dispersion is presented.This paper introduces the process of analysis and evaluation of uncertainty in measurement the fiber optic chromatic dispersion test sets.

Abstract:A multichannel temperature wireless measurement system has been developed based on C8051F020 microcontroller and DTD465 wireless data transmission module.The Pt1000 is used for temperature sensing.The wireless data transmission module uses FSK modulation and forward error correction coding.The system is designed with low power in mind.The software and communication protocol of measurement and control stations are introduced.The system has been successfully used and it shows that the system is working well,high reliable and convenient to use.

Abstract:This text introduces a kind of intelligent instrument designed with ARM and the software and hardware designs are given.A method of task dispatch and management is given which is based on uc/os-II embedded operating system.Finally,the example for explanation is given.

Abstract:测量质量工程技术是日本著名质量工程学专家田口玄一博士创立的一门新的工程技术(也称田口方法)在测量领域中的具体应用.它对提高计量管理水平,促进企业经济效益是非常有益的.本文着重介绍了这一新技术运用到计量管理中的几项突出表现.