查询词典 detector

Firstly, the multi-user detector that relatively integrity in theory and proximal to optimal multi-user detector is discussed and Decor elating Detector, Minimum Mean Square Error Detector, Optimal linear Detector together with the multi-capability indexes output energy, SNR, bit error rate, asymptotic efficiency, convergence etc.

本文首先对理论上及性能上接近最佳多用户检测的次最佳多用户检测进行理论研究，计算并分析了解相关检测器、最小均方误差检测器、最佳线性检测器的性能指标(输出能量、信噪比、渐近有效性、误码率以及收敛特性等)。

AME (Asymptotic Multiuser Efficiency) is an important factor to evaluate multiuser detector. From this point of view, performance comparison among multistage multiuser detector, decision feedback multiuser detector and linear decorrelating multiuser detector is done here.

评价多用户检测器性能的一个重要的指标就是渐近多用户效率，本文第一次从渐近多用户效率的角度分析对比了多级多用户检测器、判决反馈多用户检测器和线性解相关检测器的渐近多用户效率。

By computing chiefly the temperature field on the sensitive film of the detector, the influence of different sizes of detector constructions upon some performance parameters is analyzed to optimize the design of a bolometer detector.

主要通过对探测器敏感层温度场的计算，考虑探测器结构尺寸对其性能参数的影响，起到优化设计的作用。

Under the condition of the borehole and sandstone formation filling with oil and water, respectively, the ability is different when different energy windows are selected to distinguish formation by simulating the detector response spectrum of various diameters and length of NaI and BGO crystal. The C/O value difference of BGO crystal is higher than that of NaI crystal when the energy window includes photoelectric peak, the first and the second escape peaks, but it is less affected by the different sizes of detector crystal. Using photoelectric peak corresponding to the energy window, the C/O value difference of BGO crystal detector is much larger than that of NaI, but it increases with the crystal size increasing. The C/O value is greatly affected by energy drifting, while relatively a little by energy resolution.

对于井眼和地层流体分别为油和水砂岩地层，模拟改变NaI和BGO晶体探测器的直径和长度时的非弹性散射γ射线响应能谱，采用不同能窗处理方法对地层流体的分辨能力不同，选取光电峰和第一、第二逃逸峰对应的能量窗时，BGO晶体探测器比NaI晶体探测器测量的C/O差值大，但受尺寸的影响不大；采用光电峰对应的能量窗时，BGO晶体探测器测量的C/O差值比NaI的大得多，且随尺寸的增加差值增大；能量道的漂移对C/O值影响较大，而能量分辨率对差值影响相对较小。

It includes: the selection of detector crystal, the design of geometrical dimension of the detector, the magnetic shield of detector, shield of fast neutron and thermal neutron, distribution of fast neutron in formation, the investigation depth of logging tools and the spacing.

本文第三章介绍了对双晶C/O能谱测井仪研制过程中遇到的主要物理问题进行研究的情况，内容包括：探测器晶体选择、探测器几何尺寸设计、探测器磁屏蔽研究、快中子屏蔽、热中子屏蔽、快中子地层分布、仪器探测深度及源距等。

For radiation flux calibration based on double-monochromator, in order to overcome the faults of small viewing field and small aperture of trap detector, a radiation flux calibration method with a one-diode detector in stead of trap detector is proposed.

在基于双单色仪的辐射通量定标中，为了克服陷阱探测器视场小、孔径小的缺点，提出了采用单片式探测器替代陷阱探测器进行辐射通量定标的方法。

A magnified image of the detection double slit is formed on a bi-cell detector,and the light intensities through the detection double slit are detected by the bi-cell detector.In this way,the position of the measured object can be obtained by detecting the light intensities on two separated parts of the bi-cell detector.

探测双缝放大成像在双像限探测器上，投影狭缝像透过探测双缝的光强分别被双像限探测器的两个像限所接收，通过检测双像限探测器两个像限上的光强获得被测物体的位置。

For the different property between signal and noise in the intrinsic mode function domain, IMFs product detector is proposed. Under the condition of low SNR and the unknown distribution of noise, Simulation shows that IMFs product detector is superior to Teager energy operator detector.

利用信号和噪声在固有模态函数域中有不同的性态表现，提出了一种固有模态函数积检测器，在低信噪比和背景噪声分布未知条件下，IMF积检测器优于Teager能量算子检测器。

First, the performance of the conventional single-user detector、the optimal multiuser detector、the decorrelating detector and MMSE blind multiuser detectors have been analyzed in this paper, via simulation confirmation, an effective blind multiuser detector that can solve MAI and near-far problem is attained, its implementation is introduced preparatorily in this paper.

首先，本文较为系统地分析了传统检测器CD、最优检测器OMUD、解相关检测器DD及MMSE盲多用户检测器(基于子空间的盲算法及基于CMOE准则的盲算法)的性能，通过仿真验证，得出一种能有效解决多址干扰和远近问题的盲多用户检测器，并初步给出其实现方案。

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公司产品涵盖了露点仪/露点变送器、便携式/固定式有毒气体检测仪、可燃性气体检测仪、五合一气体检测仪、环境空气质量监测仪/监测系统、各种有毒有害气体的监测及分析仪器、风速传感器及风速仪、风向传感器及风向仪、气体分析仪/烟气检测仪等。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。