terrain flight

1. Among them, the research focus of this paper includes Terrain Rendering Algorithm ( LOD), terrain texture details, multi-window display quality improvement and flight routes setting and et al.
   其中，地形渲染算法LOD，地形的细节纹理，多窗口显示质量的提高和飞行航路点的设置等内容是本论文研究的重点。
2. From new game play elements and enhanced scenery and terrain to new aircraft and integrated content marketplace, it is an entirely new breed of virtual flight.
   从新的游戏玩元素和可提高的风景和对新的飞机和整合的满足市场的地带，它是一个虚拟飞行的完全新品种。
3. This paper studies the probability of clobber ( Pc) of a cruise missile's low height terrain following flight.
   研究了巡航导弹低空地形跟踪飞行的撞地概率问题。
4. It analyzes the key techniques on the building of 3 D models, communication on Web, ramble in virtual terrain and so on in the Web based real time 3 D display flight simulation.
   以无人机的三维实时仿真为例，分析了基于Web的三维实时显示飞行仿真软件的开发过程中三维模型的建立、网络通信、虚拟场景漫游等环节的关键技术，并给出相应的解决方法。
5. The Design and Implementation of Visual System Terrain Database in Helicopter Flight Simulator
   直升机飞行模拟器视景系统地形数据库的设计与实现
6. Implementation of Terrain Simulation in Scouting Flight
   侦察飞行中的三维地形仿真实现
7. Generalized Predictive Control for Low Altitude Terrain Following Flight
   低空地形跟踪飞行的广义预测控制
8. The control laws are used in terrain following. The simulation results show that the control laws have better for missiles during longitudinal maneuvering flight conditions.
   将此方法用于导弹地形跟踪控制，仿真结果表明：此方法在导弹纵向机动飞行中控制效果较好。
9. Application of the Nonlinear PD Controller in an Automatic Terrain Following Flight Control System
   非线性PD控制在自动地形跟随系统中的应用
10. On Dynamic Revision Technology for 3D Terrain in Flight Simulation
    飞行模拟用三维数字地形动态修改技术研究
11. Enhancement of the Airborne Collision Avoidance and Terrain Proximity Warning Function For Promoting the Autonomous Flight Capability
    加强机载交通和地形避撞告警功能提高自治飞行能力
12. 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.
    在典型地形情况下进行地形跟随仿真，并且为了真实模拟地形跟随，在控制通道加入风扰动，结果表明该飞控系统能够很好的抵抗风扰动，紧紧跟随最优轨迹飞行。
13. This paper discusses the simulation problems of the terrain following system in the low-altitude penetration flight.
    本文探讨了低空突防地形跟随系统的仿真问题。
14. 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.
    主要的内容包括直升机飞行控制系统内外回路设计、直升机机动飞行的仿真、地形跟随的仿真以及OpenGL三维动画仿真等方面的内容。
15. View-dependent Terrain Multiresolution Model in Flight Simulation
    视相关地形多分辨率模型在飞行仿真中的应用
16. Recently, terrain walkthrough has been widely used in computer games, VR, flight simulations, military mission planning and GIS etc.
    近年来，地形漫游已经广泛应用于电子游戏、虚拟现实、飞行模拟、军事演习以及GIS等各个应用和研究领域。
17. From the results a terrain database can be established for navigation, terrain suitability evaluation and flight course planning.
    本文的分析结果可作为建立可导航地形数据库、局部适配区域评估、航线规划的重要依据。
18. This method can be applied to terrain correction point by point for the airborne gamma energy spectrum in cases of any flight ways and arbitrary topographic conditions.
    该方法特点是适合于任意飞行方式（缓地形和水平飞行均可）和任意地形条件航空伽玛能谱的逐点地形改正。
19. Visualization of terrain information is playing a key role in many applications such as flight simulation, 3D geographic information system, etc.
    地形信息的可视化在实时仿真和地理信息可视化系统中占有十分重要的地位。
20. The interpolation function is a third order approximation for terrain surface with a continuous third derivative. Therefore, it can satisfy the requirements of the optimization of the flight path.
    该插值函数是地形曲面的三次逼近，具有连续的三阶导数，可以非常好地满足低空突防轨迹优化的需要。
21. The terrain following/ terrain avoidance flight trajectory planning is a key technology of low altitude penetration system.
    地形跟随/地形回避（TF/TA）航迹规划是低空突防系统的关键技术之一。
22. Internet-based navigating of large-scale terrain environments is an important aspect of distribute virtual reality applications such as flight simulations and military maneuver, but currently is restricted by the limited network bandwidth.
    基于网络的三维地形场景漫游在军事、教育、娱乐等领域有广泛的应用，但目前受限于有限的网络带宽而无法满足用户实时的需求。
23. The terrain following/ terrain avoidance/ threat avoidance ( TF/ TA 2) real-time flight trajectory planning computer is the core of the integrated TF/ TA 2 low altitude penetration system.
    地形跟踪/地形回避、威胁回避（TF/TA2）实时航迹规划计算机是综合TF/TA2低空突防系统的控制核心。
24. Total energy control principle is used to design a terrain following ( TF) flight control system of controlling the flight altitude. An error control method was adopted to eliminate the stable error of airspeed and altitude when decoupling control through total energy control principle.
    应用总能量控制原理设计了控制飞行高度的地形跟随飞行控制系统，并通过引入飞行高度和飞行速度的偏差控制，基本消除了总能量控制系统存在的稳态误差；
25. : Helicopter's main flight is in low altitude or Nap-of-the-Earth ( NOE) mode because of its combating environment and operational features. So the terrain factors must be taken account in helicopter flight simulation.
    直升机的作战环境和运用特点要求直升机主要在低空或超低空飞行，因此在直升机飞行仿真中必须考虑地形因素的影响。
26. A nonlinear PD controller is presented in this paper and is used in the design of the control laws for an automatic terrain following flight control system.
    提出了一种非线性PD控制方法，并将其应用在自动地形跟随系统飞行控制律的设计中。
27. For point-to-point path planning based on moving targets, through an analysis of A algorithm and genetic algorithm, the paper puts forward the concept of using improved A search algorithm for ground planning and genetic algorithm based on terrain matching to make real-time correction during the flight time.
    在基于移动目标的点对点规划中，本文通过分析A算法和遗传算法，改进了A搜索策略和基于地形匹配的遗传算法，并应用到航迹的地面规划和空中实时修正中。
28. Three dimensional terrain is the important component of the virtual scene outside cockpit, and the realism and real-time of terrain visualization have the direct impact on the fidelity, immersion and effectiveness of the flight simulation.
    三维地形是飞行模拟过程中窗外虚拟视觉环境的重要组成部分，地形可视化的真实性和实时性直接影响仿真的逼真度、沉浸感及有效性。
29. The terrain visualization is widely applied in 3D games, virtual reality, flight training and so on.
    地形可视化在三维游戏、虚拟现实及飞行训练等众多领域的应用越来越广泛。

noun

1. flight at very low altitudes

   Synonym:    low level flight