By combining the transient change model method and rarefaction wave method , the multidimensional rules to detect the leakage and locate the leak point were set up 并结合管道瞬变模型法与负压波法建立多维判别法则，解决输油管道泄漏检测及漏点定位的问题。
Since ehmm can keep the states unchanged for a given range of the change of observation vector , the algorithm can effectively resist the impact of the shifting ii 由于2dehmm模型在观测值发生一定范围变化时仍能够保持状态不变，因此该算法对人脸基准点定位误差具有很好的适应能力。
Basing on the laws , the paper applies the pressure - flow distinguishing method into the pipeline leak detection , and through using the method of detecting the time of pressure fall 结合此规律，将压力流量联合判别法应用于管道泄漏检测中，并通过捕捉压力波的突降时刻进行管道泄漏点定位。
In the method zero sequence voltage is discussed and new principle for automatic fault location and isolation based on the zero sequence voltage is presented in this paper 该方法以馈线电压变化量为故障点定位的主要判据进行故障点自动监测与定位，并迅速隔离故障区段，恢复正常区段的供电。
First , the geometric properties of the sum of the segments in the complex plane are proved , based on which , the robust problem is interpreted as a special point location problem of computing geometry -稳定性问题。证明了在复平面上多个线段和的几何性质。在此基础上，将鲁棒问题转化为计算几何中的点定位问题。
The method finds the singular points according to their neighbor area characters , and then orients the reference point . after that , a staged fingerprint - matching algorithm based on structural model is proposed ( 3 )在指纹匹配部分，本文提出了基于块方向及其正弦分量的参考点定位算法和基于结构特征的分段式指纹匹配算法。
We choose single point pseuodorange positioning method for the mission because the requirements for hardware are easy to access , the costs are fewer than other methods and the accuracy can meet the needs of realized work 采用伪距单点绝对定位方法进行定位，硬件要求简单、效费比高，能达到预期的精度，由此对伪距单点定位测速方法进行介绍。
Positioning algorithms are constructed . code - phase pseudorange algorithm and carrier - phase differential navigation algorithm are analyzed in details and carried out in computer . the result of simulation demonstrates well 首先选择定位算法，分别研究和仿真实现了伪距测量单点定位算法和载波相位定位算法以及它们的差分算法，仿真结果良好。
An algorithm of dynamic orbit determination using positioning solutions is studied , and the positioning trajectory is smoothed out by the dynamic model , which reduces random error and improves orbit accuracy greatly 研究了基于单点定位结果的动力学定轨方法，实现了利用动力学模型平滑定位轨迹，极大地减少了定位的随机误差，提高了定轨精度。
By testing the corrected image map , the mean error of point position was 1 meter , the maximal error was 2 meters , length distortions on x and y axis orientation were not more than 1 % and angle distortion was almost not existing 经检验，单点定位平均偏差为1m左右，最大偏差为2m左右，在x 、 y方向上的长度变形均不大于1 ，基本没有角度变形。
