航跡線 的英文怎麼說
中文拼音 [hángjīxiàn]
航跡線
英文
pathway-
The approach of curve fitting is used to mark out of the flight path
航跡的規劃採用曲線擬合的方式。Firstly, the research of this paper is focus on preflight global planning algorithm based on cell decomposition methods and artificial potential field methods
本文首先對基於柵格法和人工勢場法思想的離線航跡規劃演算法進行了研究。In preflight planning phase, the optimal global trajectory and its safe corridor can be found via synthesizing many kinds of information by large - scale computers on earth
在離線航跡規劃階段,最優全局航跡規劃和安全走廊可以通過綜合地面計算機的大范圍多種信息的方法來獲得。Radar echoes include echoes of lands, islands, all kinds of moving targets, racon, sart and sea, etc. arpa marks consist of fixed range marker, variable range marker, electronic bearing line, guard zone, heading - line, parallel index ( 4 navigation lines ), vector lines ( or pad ) and past track information of tracked target ships, marks of trial manoeuvres, ect
雷達回波包括陸地、島嶼回波,各種活動目標的回波,雷康、 sart回波,海雜波等。 arpa符號包括包括固定距標圈、活動距標圈、電子方位線、警戒圈、船首線、 pi線、已錄取目標的矢量線以及歷史航跡(或pad ) 、試操船符號等。Chapter 4 proposes two false target jamming detection schemes by dual - aperture antenna along - track and cross - track interferometric sar, which are based on moving target detection technique and spatial cancellation algorithm
第四章將動目標檢測技術和空域對消技術引入到對干擾目標的檢測中,提出了沿航跡和跨航跡雙天線干涉對消檢測虛假圖像欺騙干擾的方法。The improvements in the iaga contained adding strengthen operator, improving evaluation index of premature, etc. multi - phase homing project, making use of the flight properties of parafoil system in gliding and turning, was simple in control and facile in practice. based on frenet frame, the linear time - variable error equations of parafoil system were built
基於frenet坐標系推導和建立了翼傘系統線性時不變的誤差方程,並運用「投影點」的思想來獲得frenet坐標系下偏差量的解析近似表達式,從而設計了用於翼傘系統航跡跟蹤的傳統pd控制器和增益調節型模糊pd控制器。( 3 ) on the basis of kalman filer algorithm and on the premise of two assumptions, namely, state estimation error of each sensor is dependent or independent, kalman filter weight fusion algorithm and modified track - to - track fusion algorithm are proposed, then improved algorithm is applied to the simulation of line - guidance and terminal - self guidance of torpedo
( 3 )基於卡爾曼濾波演算法,在各傳感器估計誤差相互獨立和不獨立兩種假設的前提下,給出了卡爾曼濾波加權融合演算法,在此基礎上,提出了修正的track - to - track航跡融合演算法,並將改進后的演算法應用於魚雷線導加末自導系統的模擬研究。The sliding mode controller with the line - of - sight ( los ) guidance is adopted for the rudder control to steer the ship in waves with the functions of track keeping and roll reduction, in which the design parameters are optimized from genetic algorithm
配合los導引的滑動模式控制器是以操舵控制的方式,使船隻在波浪中的航跡能維持在既定航線並降低橫搖量,而控制器的設計參數是以基因演演算法來求得最佳化。Dvordme stations are installed at lung kwu chau ( lkc ) and siu mo to ( smt ) to support departure and missed approach paths of the hkia. aeronautical information database ( aidb ) system
兩臺多普勒甚高頻全向無線電信標及測距儀已分別安裝于小磨刀及龍鼓洲上,以支援機場的離場和復飛航跡。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Then its mathematical model is set up and its validity is proved by computer simulation results. in the following, a new processing method of using three - antenna to detect, locate and image moving target is proposed based on dpca and interferometric theory. this method can not only suppress ground clutter effectively and detect moving target but also locate accurately azimuth position of moving target and estimate its velocity
深入分析了dpca和干涉的原理后,提出一種沿航跡放置的三天線sar動目標檢測和成像方法,詳細描述了該方法的工作機理,給出系統組成框圖,並給出該方法進行動目標檢測、定位、測速和成像的步驟,然後給出了計算機模擬方案及大量的模擬結果,充分證明了採用該方法不僅能夠有效的抑制地雜波、檢測動目標,還能夠對動目標精確定位,準確估計出動目標的速度,對動目標重新聚焦成像。The same conclusion as derived from the original pda under approximate condition is concluded this way without any approximations. the second method is the instant - state performance prediction based on the hyca method. this method not only gives the off - line recursive error variance relation, but also gets a series of performance measurement such as track life
然後應用兩種方法對其進行性能估計和預測,一是基於riccati方程的穩態性能估計,其結果與pda演算法近似條件下得出的結論相同;二是基於hyca方法的瞬態性能預測,不僅給出了誤差方差的離線遞推關系,而且得到了航跡壽命等一系列性能指標的估計值。Based on multisensor target tracking system, the research of this thesis focuses on target location technique, target trajectory smoothing, filter, prediction based on a parameterized model, target tracking with nonlinear measurement, outlier detection and distributed systematic error estimate based on real - time data fusion and so on
論文以多傳感器目標跟蹤系統為背景,針對目標定位測速技術、基於參數建模技術的目標航跡平滑、濾波和外推、非線性測量系統的目標跟蹤、基於實時數據融合模型的野值剔除和分散式系統誤差估計等方面進行了深入研究。The author replaces the old polynomial motion model ca with a new nonlinear motion model further improving current statistical model, and the results are of better performance on tracking target
作者用一種具有恆法向和恆切向加速度的非線性的運動模型了進一步完善了「當前」統計模型,使濾波器對航跡的跟蹤性能大大提高了。A standard radio navigational beacon installed at the southwest end of the runway promontory to provide track guidance to aircraft departing from the runway. integrated centralised monitoring system ( icms )
這是一臺標準的無線電導航信標,裝置在跑道的西南端,用以提供航跡指引給起飛的航機使用。Space - borne radar parameters are used in simulation. base on the doppler frequency of rebound jamming signal, along - track interferometric detection scheme, which is proposed in chapter 4, is employed to detect point target rebound jamming in simulation, and the results validate the feasibility of this kind detection scheme. at last, a detailed comparison between rebound jamming and false target jamming is made
第五章介紹了彈射式干擾原理,對干擾信號特徵及干擾效果作了具體的分析,並利用機載sar參數作了干擾模擬實驗;根據彈射式干擾信號多普勒頻率的特點,利用沿航跡雙天線干涉對消技術對彈射式點目標干擾進行檢測,分析了模擬結果;最後還將彈射式干擾與虛假圖像干擾進行了比較。Design of sliding mode controllers for ship ' s track - keeping control systems based on linearized models
基於線性化模型的船舶航跡滑模控制器的設計The system performed as obtaining the real - time navigation information, adjusting the on - line control parameters, programming flight path, storing and analyzing data, which insured the realization of long distance flight
系統實現了導航參數實時獲取、飛行控制參數在線調整、航跡規劃與回顯、數據存儲及分析等功能,並為超視距飛行提供了有利保障。The text emphatically analyze the influence of all sort of interference to the imaging precision in the insar imaging process, particularly the influence of the earth - motion and the satellite - circle to the baseline. we have given the modification formulas of the height measurement in ct - insar and the velocity measurement in awnsar
本文著重分析了在insar成像處理過程中各種干擾對成像精度的影響,特別是地球運動和衛星環繞對基線的影響,給出了切航跡干涉sar ( crosstrackinterferometricsar : ct - insar )高度和沿航跡干涉sar ( alongtrackinterferometricsar : at - insar )測速的修正公式和相應的計算機模擬結果。分享友人