Thus in common receiving gathers,firstly calculate the polarization coefficient of direct wave for each trace,and then use the resulted coefficients as weights to determine the main polarization direction in detector coordinates via weighted least square metho.
因而,可以在共检波点道集中,首先计算各道直达波的偏振系数,再用偏振系数作为权系数,采用加权最小二乘算法直接计算出检波器坐标中的主偏振方向,以此准确估算出检波器方位。
This paper firstly established emulation mode of the transmission of outer radiant point signal,therefore calculated intensity of direct wave signal and multipath signal,and compared it with practical measure value.
首先建立了外源信号传播的仿真模型,由此推算出直达波信号与多径反射信号的强度,并与实际测量情况进行了比较验证,然后将直达波强度与多径信号强度作了对比分析,得出直达波的存在对布站的影响,从而为接收站的布置问题提供了参考依据。
Interference of acoustic direct wave coming from sound source makes accurate determination of underground conditions with acoustic waves difficult.
在浅地层地下物体的声波探测中，沿地表层传播的声直达波干扰是影响探测结果的主要因素之一。
Effects of direct sound and one time reflection of railway noise on residential quarter were mainly considered, and model for prediction of attenuation of railway noise in residential quarter was given in the paper.
主要考虑铁路噪声的直达声和一次反射声对住宅小区的影响 ,建立了铁路沿线城市住宅区列车噪声衰减的理论模型 ,计算分析了铁路噪声对建筑群纵深的影响 ,并与实测值进行比较 ,验证了模型的可靠性 。
When we use it to test the underwater target strength,one problem is how to discriminate the direct sound of the source with the echo reflected from the target,finding the target character quickly.
当利用它进行水下目标强度测试时,一个很实际的问题就是怎样区分声源直达声和目标反射回声,快速找出目标特性。
In order to realize the river/sea transportation,one of the effective ways is to adopt the tug barge unit.
江海直达顶推运输方式是实现江海直达运输的有效途径之一。
The problem of col1ecting and de1ivery shunting of through wagon flow of through trains is related directly to the car economic efficiency.
直达列车多点装卸取送顺序直接关系到铁路货车运用效率;文章考虑车辆行驶时间及装卸时间的不确定性,假设它们为服从正态分布的随机变量,经过分析,在给定置信水平下,提出了调车机车作业中断时间的计算方法,并结合算法设计建立了极小化调车机车作业中断时间的最佳取送模型;利用遗传算法的原理及方法对取送顺序方案进行了研究,构造了解决该问题的单亲遗传算法;通过从遗传算法对算例的计算过程和结果可见,该算法求解直达列车多点装卸取送问题取得了较好的效果。
Car group sending and fetching schedule for through trains distributed to several loading or unloading places is related directly to the car economic efficiency and the coordination of the train paths, so it is important to adopt an optimized car group sending and fetching schedule.
直达列车多点装卸取送顺序直接关系到铁路货车运用效率和列车运行线的良好接续 ,因而采用优化的取送顺序有利于提高铁路经济效益 。
The paper puts forward a method of calculating the optimal throughtrain formation plan upon condition that the through trains are determined.
本文给出一种计算在指定开行的直达列车条件下最优编组方案的方法,计算中考虑了各支点站的改编能力以及车辆改编停留时间对改编车数的依赖关系。