主要介绍多层递阶预报原理及其首次在大型舰船纵摇运动预报中的应用实例。
This article mainly introduces the principle of the multi-level recursive prediction method and the first application example to the pitching movement prediction of a large-sized naval vessel.
介绍了自回归时间序列分析法的建模预报原理,并给出了船舶纵摇运动预报应用实例。
This article mainly introduces the principle of the prediction for auto regression modeling and recommends the AR arithmetic of prediction for ship pitching motion in detail.
通过对舰船运动姿态统计分析,以及对ARMA模型和AR模型等价性论证,确定了AR模型作为船舶姿态运动预报的数学模型。
By the statistical analysis of ship motion attitude and equivalent argument about ARMA model and ar model, ar model was identified to be the mathematic model for ship motion attitude prediction.
舰船摇荡运动具有混沌特性,因而可以应用混沌理论对其进行预报。
Ship swaying motion can be predicted by the chaos theory due to its chaotic characteristic.
动态图像的制作和更新是该业务中最有利可图的部分,可以通过数据反馈的形式进行补充,例如天气预报、新闻头条或运动赛事。
The production and refreshing of animated graphics—supplemented by data feeds, such as weather forecasts, news headlines or sports scores—is the most profitable part of the business.
最后,预报了船舶在规则波中的回转运动,对一些影响回转运动的因素进行了讨论。
Finally, the prediction of turning motion of the ship in regular waves is made and the factors which affect the motions are discussed.
该公司向听众提供音乐、新闻、体育运动、天气预报、时政以及更多的节目。
The company provides listeners with programs about music, news, sports, weather, politics and much more.
分析现代脉冲星的观测资料,有助于研究板块结构,板块运动和地震预报。
We may research into the plate structure, plate motion and earthquake forecast by analysing observed data of modern pulsars.
本文的研究提出了一种有效而又简单的方法预报两船在波浪中的耦合运动,为分析海上航行补给所涉及的水动力问题提供了有效的手段。
The present study gives an efficient and simple tool to predict coupled motions of two moving ships and will be helpful to analyze the problems of under-way replenishment at sea.
利用自回归模型对船舶运动进行了预报试验研究。
Experimental study on ship motion prediction using auto regressive model was carried out.
因此研究有关船舶运动的非线性预报与减摇控制方法具有非常重要的意义。
So it is important to study ship movement nonlinear prediction and anti-roll control method.
本文的工作,对于水下机器人搭载的研究及其在海底、码头附近运动时的水动力预报有很大的实用性。
The work of this thesis has practical use for the retrieval of underwater vehicle and the prediction of hydrodynamic when it is near seabed or wharf.
预报采用进退、横漂、首摇和横摇四个自由度的方程,考虑了横摇对水平面运动的耦合影响。
The mathematic model has four degrees of freedom (surge, sway. yaw and roll), taking the couple motion of roll on horizontal plane motion into account.
此方法亦可用于船舶横摇、纵摇、艏摇运动的预报。
This method can also be used in ship roll, pitch and heave prediction.
研究潜艇的操纵性,需要对潜艇的空间操纵运动进行预报,从而掌握潜艇的操纵运动规律。
To research the submarine maneuverability, we need to predict the submarine space maneuvering motions, and master the laws of the submarine maneuvering motions.
本文中就针对这五个自由度的运动按纵向耦合运动和横向耦合运动进行了研究和预报。
This paper is intended to analyze and predict five degrees motions with the longitudinal coupled motion and lateral coupled motion.
而后,分别采用时域方法和谱分析方法,预报快艇在不规则波中的运动响应,进而确定总纵弯矩。
Then the motion responses in a random seaway are predicted in time and frequency domain, and the bending moment of boat's girder is further deduced.
根据两船的相对运动进行两船补给时的相碰概率预报。
The probability of collision between the two ships is predicted by considering the relative horizontal motion between the ships.
本文讨论了船舶在不规则海浪中运动的AR模型描述方法和AR模型阶的选择,并用自适应预报的方法提出了超前k步的自适应预报器。
In this paper the description of the ship motion with ar model, the selection of the order of the ar model and the construction of the K steps advanced adaptive predictor are discussed.
船舶横摇运动是对船舶航行影响最大的运动,研究船舶横摇运动的建模与预报对于提高船舶适航性、耐波性有重要意义。
Because ship rolling is the heaviest motion of a ship in waves, it is important to study ship rolling modeling and prediction in order to improve ship's seaworthiness and wave-resistance.
本文给出了一个预报波浪诱导的船舶垂向运动和结构总体动响应的非线性时域水弹性力学微分分析法。
This paper presents a nonlinear hydroelastic differential analysis method of wave-induced vertical motions and structural responses of ships.
舰船运动姿态的极短期预报对于舰船航行及舰载机着舰的安全起降等方面有着重要的意义。
The short-term prediction of ship motion has significant meaning to the safety of ship movement and it will enhance the safety factor of capturing planes.
根据水均衡和盐分运动的基本原理,考虑到在实际情况下不动水体的存在,提出了一种简单的区域水盐动态预测预报模型。
A simple prediction model for regional ground water and soll water concentration, in which the immobile water is taken into account, is proposed based on water movement and solute transport.
为了研究随机海浪中船舶航行安全域的构造及生存概率的预报方法,考虑阻尼和复原力矩的非线性及海浪的随机性,建立随机横浪中船舶运动的随机非线性微分方程。
The random nonlinear differential equation of the rolling motion of ships in random beam waves is established considering the nonlinear damping, nonlinear restoring moment, and the random waves.
本文主要是基于二维半理论预报船舶在波浪上的水动力特征及运动性能。
This paper presents a method for predicting the hydrodynamic property and motion characteristics of high-speed displacement ship based on 2.
当气象预报员预报说有恶劣的暴风雪时,人们就得调整他们的旅游和体育运动计划,特别是调整他们的衣着。
People adjust their travel plans, sports activities and especially their mode of dress when the weather forecasters predict a severe snowstorm.
结果表明,采用计算流体力学手段预报运动潜体粘性分层流场是可行的。
The results indicate that the capability of the computational fluid mechanics approach to the prediction of the viscous stratified flow of a moving submarine is validated.
回顾了近年来中国学者利用绝对重力观测技术在地壳运动、地震监测与预报及地球动力学等研究方面所取得的成就;
The successes obtained by Chinese scholars in investigations of crust movement seismic detection and forecast and geodynamics have been reviewed;
滑坡位移资料可为分析滑坡运动规律、发展趋势和预测预报提供依据。
The landslide displacement data was analyzed for landslide movement, development and prediction.
将运动轨迹作为整体聚类会丢失相似子轨迹段,而相似子轨迹段在实际应用中用处很大,如天气预报、交通控制等。
Clustering trajectories as a whole can miss common sub-trajectories. Discovering common sub-trajectories is very useful in many applications, such as weather forecast and traffic control.
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