tracking ship 中文意思是什麼
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Considering the characters of 3 - axes coordinate system that is not included in ship rectangular frame or inertial frame, compensation conditions are deduced through studying the effects of ship - swing. the paper studies how to transfer line velocity and acceleration in the inertial frame to angular velocity and acceleration which correspond each axis, then gives the computer function scheme. servo control scheme which can overcome ship swing and realize moving - target accurate tracking is designed according to inconsistency of radar base angle and beam angle
針對三軸軸系既非甲板坐標系又非大地坐標系的特點，既研究了船搖對正交三軸雷達系統的影響，推導實現船搖不變性的補償條件，又研究了將目標在大地坐標系中的線速度和線加速度濾波值折算到各軸對應的角速度和角加速度值的計算關系，並作出了計算機功能框圖。 -
Appropriate evaluation indexes are established based on the considerations for the missile impact, the target tracking stability and the flight stability of the missile. a simulation program is designed to simulate the missile - ship engagement scenario, and also evaluate the electronic protection capability of the active - passive multimode seeker
分別從反艦導彈彈著點、導引頭目標跟蹤穩定性和反艦導彈飛行穩定性三個方面考慮，研究了評估復合制導反艦導彈主被動復合導引頭抗干擾性能的基本理論和方法，建立了評估指標。 -
The dynamic lag error of servo system, the error caused by disturbing moment and the influence of ship motion to tracking performance are also described
同時，給出伺服系統動態滯后誤差、擾動力矩產生的跟蹤誤差，以及由於艦船運動對跟蹤性能的影響。 -
A nonlinear ship steering controller is designed successfully. even considered the noises caused by wind, wave and current, the matlab simulation tracking error is almost zero. simulation results show that the presented algorithm is effective and robust
在存在舵機非線性和海浪干擾的情況下，分別跟蹤階躍響應及正弦曲線，航向跟蹤效果很好，幾乎無偏差跟蹤，且打舵小，具有較強的魯棒性。 -
The own ship maneuvering trajectory equations and optimal trajectory of bearing - only systems locating and tracking
純方位系統定位與跟蹤的本載體最優軌線方程及其最優軌線 -
The influence of swinging ship to los is analyzed in detail. the tracking precision of the shipborne tv tracker will be improved greatly when the feedforward signal otship swaying is measured by rate gyro
本文詳細分析了艦船搖擺對視軸穩定的影響，通過理論推導和模擬分析論證了採用速率陀螺測量並前饋艦船搖速度信號將極大的提高艦載電視跟蹤儀的跟蹤精度。 -
With the development of anti - ship missile and airplane, track radar that is used in the last - defense systems is demanded for tracking in the whole airspace
隨著反艦導彈和飛機性能的不斷提高，對艦載防禦系統，特別是對末端防禦的跟蹤雷達提出了能實現全空域跟蹤的要求。 -
The method combining digital filter and ship - dynamic compensation is used to realize the precise motion - target tracking on the condition of ship - motion which causes the target relative motion and the results coming from real system test prove the effectiveness
針對甲板運動所造成的目標的相對運動和牽連運動，採用數字濾波與動態補償相結合的方案，實現了艦船搖擺情況下跟蹤雷達對運動目標的精確跟蹤，並經實踐驗證后裝備于某型跟蹤雷達。 -
For our chinese seafarers, this system solves the problem of editing english reports ; for ship managers, it saves the costing of communication and improves the efficiency of communication, fleet tracking and fleet management dramatically
對于中國船員，特別是漁民朋友，本系統解除了他們編寫英文報文的痛苦。對船舶公司，本系統可以節約通信費用、提高通信效率、加強船隊管理、提高報警成功率。 -
Ups world ease combines the speed and tracking of express delivery with the efficiency and cost savings of consolidated customs clearance, a service that allows customers to ship multiple packages to many destinations in the same country as one consolidated shipment
Upsworldease既具備速遞服務的快捷送運與貨件追蹤功能，亦能藉著將眾多貨件綜合清關，提高運送效率並節省成本。客戶只需作出一項綜合運送指令，便可將眾多貨件運往同一國家內的多個不同目的地。 -
After analyzing compensation conditions for 3 - axis stabilization to overcome disturbance from ship surge, sway and yaw, two control strategies - feed - forward compensation and closed - loop feedback compensation - are given. these two strategies are applied to antenna stabilized tracking system with good performance. intelligent pid is used in closed - loop feedback compensation to get high tracking precision and rapid response
重點分析了天線穩定控制系統的三軸補償條件，提出了穩定系統抑止載體擾動的控制策略：對于橫滾和俯仰系統採用前饋補償的控制策略；對于方位系統，在以步進電機為驅動元件的特定條件下，研究了變控制周期的閉環反饋策略，同時成功將智能pid演算法應用於實際系統，提高了系統的跟蹤精度和響應快速性。 -
To apply neural networks to the simulation of ship maneuvering motion, an nnrm ( neural network recursive model ) is designed and used to simulate a serial full - scale tests conducted in yangtze river and the comparison between simulated results and the measured ones is satisfactory. ship trajectory tracking is a well - known maneuvering problem with an increasing practical and theoretical interest. but the real - world tracking applications encounter a number of difficulties caused by the presence of different kinds of uncertainty due to the unknown or not precisely known system model and environmental effects
本文利用智能控制技術的優越性，嘗試將智能化控制技術用於船舶操縱運動模擬，初步探索了將現代控制理論和智能技術融入船舶操縱預報、模擬的研究方法，提出了用於船舶操縱運動模擬的線性神經網路（ lnn ） 、神經網路遞推模型（ nnrm ）和nnrm 、交錯航跡距離（ cte ）和視距（ los ）混合控制器模型三種控制模型：並將控制模型的理論研究應用到實船試驗數據分析、計算，將模擬結果與實際的試驗結果作了比較。 -
Sufficient condition of global asymptotic stability for ship ' s straight - line tracking control system
船舶直線航跡控制系統全局漸近穩定的充分條件 -
Satellite tracking ship
衛星跟蹤船 -
Tracking precision of electro - optical tracking equipment is influenced by ship - swaying, the los ( line of sight ) stabilization is the key of improving the precision of weapon
艦船搖擺影響艦載光電跟蹤設備的精度，視軸穩定是提高武器精度的關鍵。 -
The coordinate transformation technology is adopted to compensate real time attitude angles of the swinging ship on the azimuth and pitching axis of tracking equipment in order to stabilize los and improve precision
故採用坐標變換技術，在跟蹤設備的方位和俯仰軸上對船搖姿態角進行實時補償，達到視軸穩定、提高精度的目的。 -
Other services available through fedex ship manager at fedex. com include courtesy rate quotes, on - line tracking and a database with information on recipients
Ship manager at fedex . com提供的其它服務包括：優惠費率報價線上追蹤及收件人資料庫。 -
Now, the ship - borne antenna stabilized tracking system has achieved anticipated requirements
系統調試表明，所研究的艦載天線穩定系統已達到預期的指標要求。 -
Abstract : anti - ship missiles threaten battleships severely, and tracking anti - ship missiles accurately is the requirement for defending them
文摘:反艦導彈構成了現代艦艇的嚴重威脅，對反艦導彈精確跟蹤是反導防禦成功的重要前提。
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