terrain following 中文意思是什麼
terrain following
解釋
地形跟蹤飛行任務-
This paper also discusses theories, characters, applications of the three following algorithms of terrain matching system : terrain contour matching ( tercom ), terrain - aided inertial navigation system, wavelet transform, the simulation results are provided
論文先後討論了地形輪廓匹配演算法、卡爾曼濾波地形輔助導航演算法、小波分層演算法的原理、特點、適用范圍，做了模擬研究，比較了它們的匹配性能和相關特點。 -
Finally, the thesis developed 3d animation flight simulation platform for helicopter using opengl in visual c + +. and the 3d terrain and helicopter model are constructed. the simulation of two typical maneuver ( s maneuver flight and bopup - bopdown ) and terrain following shows that the fight control system of attack helicopter is improved by the realistic optical impact
本文最後在vc環境下用opengl開發了直升機三維動畫模擬平臺，構造了三維地形和直升機模型，模擬了直升機做蛇形機動、急躍升急躍降、地形跟隨等機動飛行，通過逼真的視覺效果驗證了飛控系統的正確性。 -
Then above the typical terrain and under the disturbance the terrain following system is simulated. the result shows the flight control system can withstand the disturbance and track the optimal trajectory
在典型地形情況下進行地形跟隨模擬，並且為了真實模擬地形跟隨，在控制通道加入風擾動，結果表明該飛控系統能夠很好的抵抗風擾動，緊緊跟隨最優軌跡飛行。 -
Under support of remote sensing and gis, multi - temporal remote sensing data, terrain data and hydrological data were applied to the study on the coastline evolution of the delta since 1976, which includes following parts : ( 1 ) study on the dynamic monitoring of the coastline
本文以多時相遙感影像數據、地形數據、水文統計數據等為主要數據源，以rs與gis技術為支撐，對1976年以來黃河三角洲海岸線的演變開展動態監測研究，著重研究了以下幾個方面的內容： （ 1 ）海岸線動態監測研究。 -
Fig. 2 vertical structure of the grid points in the orsm : upper levels are close to the pressure coordinate while lower levels are terrain - following
圖2 orsm網格點的垂直結構：上層趨向氣壓坐標，而下層坐標則隨地形變化。 -
Design of the control laws for an automatic terrain following pi and fuzzy controllers by using and ny method are designed for different feedback signals. a method of control height and height rate is presented
提出了一種新的跟隨控制方法：對高度和高度變化率的控制律設計方法，取得了很好的控制效果。 -
Based on lots of advanced results of computer graphics, modem mathematics, computer science and topography, etc. this thesis discussed the theory, techniques and arithmetic of three - dimensional terrain visualization in three - dimensional gis, such as terrain modeling techniques for digital elevation model, basic theory of three - dimensional terrain visualization, dynamical three - dimensional terrain display with simplified model, and spatial query methods within three - dimensional terrain maps. among these techniques, combined with concrete requirements for visualization in flood control decision - making system, this thesis emphasized on the following aspects : 1
本文在吸取了計算機圖形學、現代數學、計算機科學、測繪學等眾多領域大量先進理論成果的基礎上，系統的論述了三維gis中地形三維可視化的理論、技術和演算法，包括數字高程模型的地形表面建模技術、地形三維可視化的基本理論、基於模型簡化的地形三維動態顯示技術以及基於三維地形圖的空間查詢技術。 -
Automatic terrain following system
自動地形跟蹤系統 -
The paper introduces several algorithms of terrain matching system and makes simulation study on the condition of terrain following / terrain avoidance
該文研究了在地形跟隨地形迴避（ tf ta ）條件下的幾種地形匹配演算法。 -
This paper mainly studies the algorithm of the terrain following / terrain avoidance / threat avoidance trajectory programming technology and its realization in vxworks
本文針對地形跟蹤地形迴避威脅迴避的航跡規劃技術演算法及其在vxworks中實現進行研究。 -
The design of terrain following system is another important part of the dissertation. the terrain following system is designed by adaptive angle method. but there are some problems in the system so the improved adaptive angle method is given
地形跟隨系統的設計也是本文的一個重要內容，在這一章中，本文採用適應角法設計地形跟隨系統，並提出了適應角法的改進方法。 -
In this paper involved several aspects about the inner and outer loops design for helicopter flight control system, maneuver flight simulation for helicopter, terrain following simulation and 3d animation flight simulation system designed with opengl
主要的內容包括直升機飛行控制系統內外迴路設計、直升機機動飛行的模擬、地形跟隨的模擬以及opengl三維動畫模擬等方面的內容。 -
The integration of terrain following / terrain avoidance / threat avoidance is a new technique for the aircrafts to achieve low altitude penetration flight. and the trajectory programming technology is the important base of the design of control laws
綜合地形跟蹤地形迴避威脅迴避是新一代低空突防飛行的關鍵技術，其中的航跡規劃技術是飛行器低空突防飛行控制律設計的重要依據，通過對航跡的規劃，使得飛行器緊貼地形輪廓安全飛行。 -
The main contributions of the dissertation are as following : ( 1 ) according to the theories of co - polarization and cross - polarization scattered characteristics, co - polarization and cross - polarization scattering characteristics of typical targets have been analyzed detailedly in this paper. a mechanism is described that rough surface tilted ( symmetrical distribution scene ) conduces to estimate terrain slope. so, we can estimate an elevation outline of symmetrical distribution scene without any experiential knowledge
本文的主要貢獻可歸納為以下五點：山廠村拈人學博十論義2001 （ l ） 4十日標的共極化和交義極化敞射理論，詳細分析了典型11杯的共極化和交義極化敞射特性，網明傾斜的均勻分佈場景（粗糙表而）的共極化敞射特性4i利十提取地形方位向高度輪廓的機jrp 。 -
The terrain library has a set of functions to deal with this problem. the following variables were defined to store the required values
地形庫里有一個函數集來處理這個問題。下面的變量儲存了相關的需求值。 -
This dissertation focused on the research and experiment work in the following aspects : 1 ) the basic problems of digital 3d terrain modeling and visualization ; 2 ) the reconstruction of terrain surface ; 3 ) the real tune terrain simplifying and multi - resolution terrain model presenting. a view dependent dynamic multi - resolution terrain model is presented
論文從三維數字地形建模與可視化的基本問題，數字地形三維模型的計算機重構，復雜地形模型的實時動態簡化與多解析度表示等方面開展了研究與試驗工作。 -
This paper mainly discusses the following aspects : the creation method of irregular triangular network from regular grids, fast computing method of vertex normals in tins, the creation method of multiresolution terrain models and method of view - dependent real - time rendering
本文具體研究內容集中於基於規則格網的不規則三角網生成演算法、不規則三角網頂點法矢量的快速計算方法、多解析度地形模型的構造方法和視點相關的實時繪制方法。 -
A hybrid of pressure and terrain - following vertical co - ordinates is used in which the upper levels tend towards the pressure coordinate and near - surface layers tend towards the terrain - following coordinate
垂直坐標是混合了氣壓坐標和依隨地形變化的坐標，上層傾向氣壓坐標，接近地面的層次則傾向依隨地形變化的坐標 -
5. direct lift control in tf the direct lift control method ( vertical translation mode ) is used in the terrain following flight control system. the dynamic inversion + pi and dynamic + fuzzy control methods are adopted and the simulation results are provided
應用直接力進行地形跟隨以afti f - 16戰機為模型應用先進的直接力方法，將垂直平移模態應用於地形跟隨，在設計中分別用動態逆+ pi的方法與動態逆+模糊的方法，並對這兩種方法進行了模擬。 -
However, the second technology has the following disadvantages : first, data paging and tmrm generating are integrated into one modulate, next, data structures they used are very complicated and large, in addition, the work of data preprocessing is very heavy and frequently data paging need the server with high performance, at last this paging method is very difficult for implementation. as for the first technology, an important advantage of it is that the data paging and tmrm generating are not interdependent, so it will be more e asily applied in practice than the second one. as an implementation of the first technology, lindstrom introduced a method which uses quadtree and triangle binary tree to organize terrain data and adopt multithread mechanism to realize the data process
而第一種流式處理技術盡管一次調入的數據量稍大，但其數據調度與多解析度模型的生成在功能上是相互獨立的，如果處理得當更容易在實際工程中得到成功的應用，對於它的實現， lindstrom提出了利用四叉樹及三角形二叉樹進行地形數據組織並利用多線程機制進行數據調度與簡化的流式處理方法，但該方法的缺點是：其數據結構依賴于地形的物理分割，因此數據結構龐大；多解析度模型生成的計算量也依賴於物理分割的粒度，即物理分割粒度較粗時，數據范圍增大，計算量會急劇增加；該方法不能實現模型的增量生成。
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