查询词典 reflectometer

Combining with the research situation in domestic and abroad, the applications of chaotic laser in the areas of communication and measurement are introduced, such as chaotic secure communication, chaotic laser ladar, and chaotic optical time domain reflectometer.

结合国内外研究现状，简要介绍了混沌激光在通信及测量领域的应用，包括混沌保密通信、混沌激光雷达和混沌光时域反射仪等技术，并指出了混沌光通信与混沌激光测距的发展趋势。

Optical Time Domain Reflectometer, OTDR, an instrument used for measuring the characteristic of the light loss and fault location, which is one of the important and commonly used instruments during construction and maintenance or measurement of optical application system.

国外OTDR的技术指标已经达到很高的水平，但由于我国基础工业水平低、国外技术的封锁以及国内研发力量不足等因素，国产OTDR与国外仍有很大的差距，市场化水平也低，国内市场基本上被国外产品所垄断，因此很有必要对OTDR的测试理论、所用的关键技术等作深入系统的研究。

On the basis of the symmetry of response equation of a multi port reflectometer, the two complex constants of system are determined by using the same procedure.

自从六端口技术诞生以来〔2〕，各种校准方法层出不穷，任何一种校准方法都是针对多端口反射计响应方程而言的〔1〕。

The problems existing in the planning and construction of power optic cable monitoring system are emphatically researched, the experiences in the aspects of site selection for monitoring station, the planning of testing route and monitoring modes, and the selection of optical time domain reflectometer are summarized.

着重研究了在电力光缆监测系统规划、建设中存在的问题，总结了在监测站选址、测试路由规划、监测方式规划及光学时域反射计选型等方面的经验。

Distributed optical fiber sensor ; optical time domain reflectometer; Brillouin scattering ; Raman scattering

分布式光纤传感器；光时域反射仪；布里渊散射；瑞利散射

The comparision with the continuous wave method and double-antenna method shows that the reflectometer essentially is equivalent to a integration of single-station method testing system module.The measurement system which can use single station can be used for reflectance measurement.

与连续波法、双天线法比较，得知反射计本质上相当于单站法测试系统中部分模块的集成，能采用单站法的测量系统就可用反射计测量。

Taking use of the reflectometer which is installed on the 3B1 line in BSRF, two kinds of measurements of reflectivity versus wavelength and reflectivity versus incident angle are carried out.

利用安装在北京同步辐射装置3B1束线上的一台小型反射率计，对磁控溅射方法制备的软X多层膜进行了R～θ、R～λ两种反射率测量，得到实测反射率高达32％的满意结果，同时给出了理论计算对实验的拟合，二者符合的很好。

An improved method for measurement of complex permittivity using six-port reflectometer is presented. Error caused by incomplete superposition between the measured plane and reference plane, which is often in the case of conventional measuring method, is eliminated with the developed novel algorithm by separating the two planes.

提出了六端口反射计测量介质材料复介电常数的一种改进方法，新的算法使测量面与参考面分离，消除了传统测量方法中测量面与参考面无法完全重合引入的误差。

A sort of strain sensor that is made of cycloidal stretch film piece and microbent modulation construction and a method of distributed optical fiber strain sensor by Optical Time-Domain Reflectometer are brought forward.

摘要提出了一种用圆形弹膜片和微弯调制机构进行应力传感，用光时域反射探测技术进行测量的分布式光纤应力传感方法。

Application of Time Domain Reflectometer in geotechnical measurements is a relatively new development. It can be used to measure electrical properties of soils that are related to soil physical properties. In addition, TDR has found applications in monitoring ground water level and relative deformation in soil, rock, or structure.

TDR应用於大地工程之量测为一较新的发展，它除了可以量测与土壤基本物理性质息息相关之土壤电学性质，也可应用於地下水位监测及土壤、岩石之变形监测。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。