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absolute location
相关语句
  绝对定位
     Absolute Location in Programming With C Language for the 8051 MCU
     51单片机C语言编程中的绝对定位问题
短句来源
     In this platform, laser sensor is used for absolute location to remove cumulative error from odometer periodically to make a precise and real-time location system.
     该平台定期根据激光传感器的绝对定位数据修正里程计的累积误差,从而实现了精度较高、实时性较强的定位系统。
短句来源
     In the third part, the principle and determination of some absolute location methods are presented ,which include Inductive Radio Line, vortex inductor and magnetic Electromagnetic Induction method.
     在第三部分中,主要介绍了三种绝对定位方法的原理和检测技术,这些方法包括交叉感应回线绝对定位、涡流电感式绝对定位和电磁感应绝对定位
短句来源
  绝对测距
     The on site operating experience shows that the presented locator has high reliability, accuracy and performance price ratio. The average absolute location error of the locator is less than 400 meters, and the maximum absolute error is less than 900 meters.
     运行经验表明 ,该装置具有较高的可靠性、准确性及性能价格比 ,其平均绝对测距误差不超过 40 0 m,最大绝对误差不超过 90 0 m。
短句来源
     The actual fault analysis shows that the Type A principle possesses very high accuracy, and its absolute location error does not exceed 500 m.
     实测故障分析表明,A型现代行波故障测距原理具有很高的准确性,其绝对测距误差不超过500m。
短句来源
     The actual fault analysis shows that the type D principle possesses very high reliability, and its absolute location error does not exceed 1 km.
     实测故障分析表明,D型现代行波故障测距原理具有很高的可靠性,其绝对测距误差不超过1km。
短句来源
  绝对位置
     It shows that the the structure of noise field is inhomogeneous in both horizontal and vertical direction and dependent on the absolute location.
     结果发现 ,有限面积源的噪声场结构无论是水平结构 ,还是垂直结构均是不均匀的 ,都依赖于接收场点的绝对位置
短句来源
  “absolute location”译为未确定词的双语例句
     The dimensional transformation, the coordinate transformation from earth coordinates to polar coordinates, the compute for the absolute location of the observed object, the bimodulus combined compute for the location of combined object, and the proportional guidance are implemented.
     具体实现了量纲变换、空间大地坐标系到平面极坐标系的变换、模拟的同一观测平台下观测目标位置的计算、复合目标位置的双模复合求解、模拟的复合末制导反舰导弹在理论的比例导引规律下运动轨迹的求解等关键算法。
短句来源
     The relocation results were compared with that from traditional absolute location.
     并对传统的绝对定位法、多重相对定位法和波形互相关技术的结果进行比较 .
短句来源
     Then the absolute location is retrieved iteratively by leastsquare adjustment for linear RD equations. Test is conducted using ERS2 SAR imagery of Suzhou area, China, comparing with topographic map with a scale of 1∶100,000. The results indicated an accuracy of 200 meters is attainable independent of any reference or GCP point.
     利用苏州地区ERS-2SAR图像产品和该地区1:10万地形图对该方法进行了实验验证,结果表明该方法平面定位精度达到200m量级,可以满足无控制点条件下中分辨率星载SAR图像中目标像元定位的需求。
短句来源
     The author depicted initially the knowledge on earthquake-producing dynamic mechanism and considered that active faults were the common developing location of earthquakes but not absolute location.
     阐述了对地震产生的动力机制的认识,并认为活断层往往是地震孕育场所,但不一定所有地震都在活断层的基础上发生。
短句来源
     We compare the result from GENETIC absolute location with that from our relocation.
     并对GENETIC遗传算法、交切法和双差定位法的结果进行比较。
短句来源
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  absolute location
The absolute location of the FLD, as given by the FLD0, depends not only on the material properties, but also on the choice of failure criterion, defect geometry, and details of the simulative model (mesh size, number of defect dimensions,etc.).
      
As a result of such calibration, we determine the radiotelescope sensitivity and the absolute location of the directivity pattern (DP).
      
A methodology is presented for applying annealing techniques tomultisource absolute location problems on graph.
      
Annealing Algorithms for Multisource Absolute Location Problems on Graph
      
The new infrastructure is based on the Linda coordination model, and adds a layer of abstraction over the absolute location of resources.
      
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In this paper, the methods for the determination of the main errors of the LLMC are presented by comparing them with those of the traditional meridian circle, and the accuracies, especially the correction of the flexure of the tube of the circle, are estimated. After a CCD detector is attached to the LLMC, the accuracy of determining may reach 0.″001. The possibility is analysed of obtaining the instantaneous azimuth and latitude with ah accuracy of ±0.″01, and the prospect of the accuracy of better than ±0.″02...

In this paper, the methods for the determination of the main errors of the LLMC are presented by comparing them with those of the traditional meridian circle, and the accuracies, especially the correction of the flexure of the tube of the circle, are estimated. After a CCD detector is attached to the LLMC, the accuracy of determining may reach 0.″001. The possibility is analysed of obtaining the instantaneous azimuth and latitude with ah accuracy of ±0.″01, and the prospect of the accuracy of better than ±0.″02 for a single absolute location of a star on the celestial sphere is also analysed. This is the advantage the LLMC will have and it is also the one which should be brought into full play.

本文用与传统子午环比较的形式,叙述了低纬子午环几种主要误差的测定方法,并估计了它们的精度。特别是仪器弯曲改正,在配备CCD探测器后,其测定精度可以达到±0.″001的量级。文章分析了获得精度达± 0.″01量级的瞬时方位角和瞬时纬度的可能性,还分析了在天球上单次绝对定位精度优于± 0.″02的前景,这是低纬子午环将具有的优势,也是应当充分发挥的优势。

The paper presents a new high accurate camera calibration approach for 3-D computer vision system-named as DLTEAI (Direct Linear Transformation-Error Approximation I). To overcome shortcomings of digital image acquisition, we introduce a modified lens distortion model and a quadratic polynomials of system error approximation based on the posterior compensation in the DLTEAI approach. The stereo vision system with off-the-shelf CCD or TT cameras calibrated by DLTEAI has an average relative accuracy of 1/10000...

The paper presents a new high accurate camera calibration approach for 3-D computer vision system-named as DLTEAI (Direct Linear Transformation-Error Approximation I). To overcome shortcomings of digital image acquisition, we introduce a modified lens distortion model and a quadratic polynomials of system error approximation based on the posterior compensation in the DLTEAI approach. The stereo vision system with off-the-shelf CCD or TT cameras calibrated by DLTEAI has an average relative accuracy of 1/10000 over the field of view (300mm by 200mm) and the depth (0.8m-0.9m). The absolute location errors are less than 0.03mm, 0.04mm and 0.09mm in x, y and z directions respectively.

本文在分析计算机视觉系统中摄象机几何模型的基础上,修正了光学镜头畸变模型使之与数字成象系统相配合,提出了一个非常适合于3—D计算机视觉系统的通用高精度摄象机定标方法:增强型直接线性变换—误差拟合算法(DLTEAⅡ).实验表明,使用普通CCD摄象机的立体视觉系统经DLTEAⅡ定标后,在300mm×200mm视场和0.8m~0.9m深度范围内其三维定位的绝对精度分别为dx<0.03mm,dy<0.04mm和dz<0.09mm,相对精度为视场大小和深度的1/10000.本文所提出的定标方法在三维计算机视觉、智能机器人、工业自动化生产、近景摄影测量和军事等领域有着广泛的应用前景.

In order to efficiently and accurately measure geographic locations of ground truth features in the field of resource and environment remote sensing using economical and easy operational GPS instrument, the following experiments were carried out using C/A code pseudo_distance differential GPS instrument (DGPS). Firstly, the effect of base station's geo_center reference coordinate (WGS84) on location accuracy was evaluated. Secondly, a point was differentially located with a known trigonal control point as base...

In order to efficiently and accurately measure geographic locations of ground truth features in the field of resource and environment remote sensing using economical and easy operational GPS instrument, the following experiments were carried out using C/A code pseudo_distance differential GPS instrument (DGPS). Firstly, the effect of base station's geo_center reference coordinate (WGS84) on location accuracy was evaluated. Secondly, a point was differentially located with a known trigonal control point as base station site and a three parameter Molodensky Model as datum transformation model between WGS84 and Beijing 54. On this point, we then established a temporal base station, which was used to measure the aimed ground truth features in the test site. The location accuracy attained by this route was evaluated as well. It was found that DGPS measured map is of highly absolute accuracy (2\_5m), and this absolute accuracy does not change with the minor error of geo_reference coordinate of the base station. It is a practical method to measure and establish a new temporal base station, which can be used to carry out the real measure work in the test site. The location error of this method is far under one image pixel size (25m) with one geo_referenced TM image as evaluation reference. However, if the trigonal control point and datum transformation model do not exist, the result of base station single point absolute location can be used as reference coordinate, the measured result of which can be geo_referenced to remote sensing image using some tiepoints on the basis of the first result above. Because this method does not need to know the geo_reference coordinate and datum transformation model, it's a ecnomical and practical method for resources and environment remote sensing.

为了能够利用较低配置的GPS设备 ,方便有效地完成与资源环境遥感有关的地物定位测量任务 ,利用伪距DGPS设备进行了如下试验研究 :基站参考坐标对定位精度的影响、基于大地测量三角控制点和WGS84到北京 5 4坐标系转换模型进行基站参考坐标差分测量导算的方法和精度、在导算出的控制点处建立基站进行试验区样地定位测量的方法及所能达到的精度。试验结果表明 ,在具备测区至少一个三角控制点和坐标转换参数条件下 ,可以采用首先从已知三角点导算出一个位于方便位置处的点的大地坐标 ,然后在该点建立基站用于完成实际测量任务的方法。以遥感影像作为参照对其绝对定位精度进行了评价 ,发现这种方法所能达到的在当地坐标系中的相对定位精度远远小于一个像元大小 ,可以推广应用到资源环境遥感的各个应用领域。在不具备基站参考坐标和坐标系转换参数的条件下 ,可以基于差分测量结果之图形要素绝对位置精度高且不随基站地心参考坐标小量变化而改变的特点 ,采用图形到遥感影像配准的方法直接将测量结果图形转换到已经和当地坐标系配准的遥感影像上去。采用这种办法 ,在差分处理时不用考虑基站的精确WGS84地心参考坐标 ,也不用考虑坐标系的转换参数 ,利用基站单点绝...

为了能够利用较低配置的GPS设备 ,方便有效地完成与资源环境遥感有关的地物定位测量任务 ,利用伪距DGPS设备进行了如下试验研究 :基站参考坐标对定位精度的影响、基于大地测量三角控制点和WGS84到北京 5 4坐标系转换模型进行基站参考坐标差分测量导算的方法和精度、在导算出的控制点处建立基站进行试验区样地定位测量的方法及所能达到的精度。试验结果表明 ,在具备测区至少一个三角控制点和坐标转换参数条件下 ,可以采用首先从已知三角点导算出一个位于方便位置处的点的大地坐标 ,然后在该点建立基站用于完成实际测量任务的方法。以遥感影像作为参照对其绝对定位精度进行了评价 ,发现这种方法所能达到的在当地坐标系中的相对定位精度远远小于一个像元大小 ,可以推广应用到资源环境遥感的各个应用领域。在不具备基站参考坐标和坐标系转换参数的条件下 ,可以基于差分测量结果之图形要素绝对位置精度高且不随基站地心参考坐标小量变化而改变的特点 ,采用图形到遥感影像配准的方法直接将测量结果图形转换到已经和当地坐标系配准的遥感影像上去。采用这种办法 ,在差分处理时不用考虑基站的精确WGS84地心参考坐标 ,也不用考虑坐标系的转换参数 ,利用基站单点绝对定位结果作为参考坐标进行差分就可 ,可以节省不

 
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