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数据叠加
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  data overlay
     By an application of analyzing for spatial data overlay, a bug was discovered in Oracle Spatial and confirmed by Oracle Corporation. The bug ID is 3146244. In allusion to the disadvantage of Oracle Spatial in processing massive spatial data, an algorithm of “Coordinate-consolidation Overlay” was presented.
     在进行空间数据叠加分析的实际应用中 ,发现 Oracle Spatial处理空间数据的一个缺陷 ,并得到 Oracle公司的确认 (bug号 :314 6 2 4 4 )。
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  “数据叠加”译为未确定词的双语例句
     The combined data of 16S r DNA PCR-RFLP and 23S r DNA PCR-RFLP analysis
     将16S rDNA PCR-RFLP和23S rDNA PCR-RFLP数据叠加后进行综合分析,能更好揭示菌株间系统发育关系。
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     by analyzing of each spatial data and stressing on regress analysis of "3414" experiment in the study area,the authors formed the model of fertilization.
     在对各种空间数据叠加分析的基础上,重点对研究区域内的“3414”试验数据进行肥料试验回归分析,形成了配方施肥模型.
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     Finally,some problems are discussed in this paper such as the influence to DOM by relief displacement and the image displacement after data overlaying of DEM with DOM as well as DLG with DOM.
     分析了投影差对DOM的精度影响和DEM与DOM、DLG与DOM数据叠加产生影像位移的问题。
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     Utilizing 3S and database technology, the image pretreatment of extracting RS information, the NDVI extracting, the information extracting of land cover and water loss and soil erosion, the buffer analysis, the analysis of folding dates have been made.
     利用3S和数据库技术进行了遥感信息提取前的图象处理,植被指数NDVI提取,土地覆被和水土流失信息提取,缓冲区分析,数据叠加分析等应用。
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     A set of quick & accurate work flow of forest resource inventory and planning was explored,taking Guangxi Shatang state-owned forestry center as an experimental zone,by fieldwork data collection,GPS data downloading and disposing,coordinate conversion,topographic map matching and correcting,overlapping of GPS data and GIS data with GPS receivers of eTrex Venture of GARMIN.
     采用GARMIN的eTrex Venture(奇遇)手持型GPS接收机,以广西国有沙塘林场为实验区,通过野外实地数据采集、GPS数据下载及后处理、坐标系转换、地形图配准、GPS数据与GIS数据叠加等,探索了一套快速、准确森林资源调查规划的工作流程。
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  相似匹配句对
     DATA & INFORMATION
     数据
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     DATA
     数据
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     Method of Data Fusion on Remote Sensing Images
     边缘叠加遥感影像数据融合
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     Channel Estimation Using Data-dependent Superimposed Training
     基于数据依赖的叠加训练序列信道估计
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     Static Correction by Using Stacking Method
     叠加法静校正
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  data overlapping
The plotted spectrum is the average of six spectra without data overlapping.
      
  data overlay
Using simulation models at large spatial scales helped identify weaknesses of GIS data overlay and interpolation capabilities.
      
Given customer demand, improving the productivity of legacy TDM assets may be just as profitable as investment in an IP data overlay.
      
GPRS is a packet data overlay onto existing GSM net works.
      


This paper describes a system in which image of biological specimen is obtained from its ESR signal. In order to reduce microwave electric heating in biological specimen effectively and obtain the imaging information of specimen conveniently, the microwave frequency in the system is arranged at L -band and the cavity resonator is replaced by an one-turn plane coil. In this system the magnetic field scanning is controlled and the data collection of ESR signal is completed synchronously by IBM-PC computer. The...

This paper describes a system in which image of biological specimen is obtained from its ESR signal. In order to reduce microwave electric heating in biological specimen effectively and obtain the imaging information of specimen conveniently, the microwave frequency in the system is arranged at L -band and the cavity resonator is replaced by an one-turn plane coil. In this system the magnetic field scanning is controlled and the data collection of ESR signal is completed synchronously by IBM-PC computer. The ability of measurement on weak signal with noise is increased by repeating scanning, collection data, add and average. Finally, the image of specimen is obtained by reconstruction method of convolution filtering back-projection. This system also has the unexpensive feature and it is easy to build.

本文介绍建造一个利用电子自旋共振信息获得生物体断层图像的系统。系统的微波频率安排在L波段,并用单匝平面线圈代替谐振腔,从而有效地减小了微波对生物体的热效应和方便地获得样品的断层信息。系统中用计算机控制磁场扫描,并同步地完成ESR信号的数据采集。通过多次扫描、采集数据、叠加和平均,提高了系统从噪声中检测微弱信号的能力。最后采用卷积滤波反投影重建法获得样品的断层图像,本系统具有价廉和容易构建的特点。

The stack of converted wave requires real common conversion point(CCP) gathering.When medium is horizontally layered,CCP coordinates can be determined by using the analytic expression that is derived in the ease of single uniform layer. However,in practical application,the analytic expression is too tediously long and causes much computation,and its parameters show indistinct influence on CCP coor- dinates.What is more,it is very difficult to derive such analytic expression in the case of slant interfaces. An...

The stack of converted wave requires real common conversion point(CCP) gathering.When medium is horizontally layered,CCP coordinates can be determined by using the analytic expression that is derived in the ease of single uniform layer. However,in practical application,the analytic expression is too tediously long and causes much computation,and its parameters show indistinct influence on CCP coor- dinates.What is more,it is very difficult to derive such analytic expression in the case of slant interfaces. An iterative algorithm for CCP locus is derived in the case of single uniform layer.The algorithm leads to fast calculation,accurate result and rapid convergence. If the iteration result of a depth point is used as the initial value of the next point,a single iteration usually makes the relative error much smaller than 0.1%.This algo- rithm is seven times faster than the original one.This algorithm is expressed by a concise formula,from which people can see how velocity ratio and offset/depth ratio influence CCP coordinates.Essentially,this iterative algorithm can be easy applied to the case where reflectors slope down.

转换波数据的叠加要求真正的共转换点选排。当地下介质为水平层状时,其共转换点(CCP)坐标可通过在单个均匀层情况下导出的解析表达式来近似地确定。然而,对实际应用来说,这个表达式显得很冗长、计算量大,式中参数对共转换点坐标的影响关系也不明显。而且,当地下反射界面为非水平时,建立这样的解析表达式将十分困难。本文在单个均匀层情况下,导出了一种转换点轨迹的迭代算法,该算法运算速度快、精度高、收敛快。如果用前一个深度点的迭代结果作为后一个深度点的迭代初值.一般只需迭代一次便可使相对误差远远小于0.1%,其运算量可比原解析表达式算法提高近7倍。该算法的表达式简单,且从中可以清楚地看到速度比及炮检距与深度之比对 CCP 坐标的影响关系。最主要的是,这种迭代算法很容易推广到地下反射界面为非水平的情形。

Based on the simulative data yielded by adding some extent of errors to the data mea sured by CCD and calculation parameters, the influece factors in multicomponent analysis by use of Kalman filtering have been systematically investigated. Some laws have been obtained, and the accuracy of multicomponent analysis has been improved.

本文应用高灵敏电荷耦合器件荧光检测,根据实际测量数据叠加一定程度误差而得到的模拟数据及选取不同的计算参数,对影响卡尔曼滤波结果的因素.进行了较为系统的研究,找到了一些规律,提高了多组份分析的准确度。

 
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