1.1大地测量学的定义、分类和任务 定义:大地测量学是为人类活动提供空间信息的科 学,着重研究地球的几何特征(形状和大小)和 基本物理特性(重力场)及其变化。 分类:几何大地测量、物理大地测量 几何大地测量:经典大地测量、空间大地测量 物理大地测量:地面重力、航空重力、卫星重力

Outline Purpose of thermal control systems Review of heat transfer fundamentals Space system thermal analysis equations Models Analysis programs Thermal control sub-systems

Background An icbm with a range of 6500 miles has a stagnation temperature of 12,000%F, 2000 f hotter than the surface of the sun Calculations showed that the optimum design for structural strength, resistance to heating, and free flight stability was a long, needle nosed reentry body But it would vaporize during reentry

The telemetry, tracking and control subsystem provides vital communication to and from the spacecraft TT&c is the only way to observe and to control the spacecraft's functions and condition from the ground October 29 2003 Massachusetts Institute of Technology

Autonomy Technologies Fault Detection, Isolation and Recovery Planning & Scheduling Intelligent Data Understanding Path Planning Gradient method

Why Cost Estimation? Critically important part of system design Too high- lose the contract award Too low-over-run cost plus contracts, company loss on fixed price contracts Trends Design to cost Cost as an independent variable

Deployment and Geometry Maintenance Deployable Membranes Used for solar arrays, sunshields, decoys Being researched for apertures starting at RF and eventually going to optical Inflatables First US satellite was inflated (ECHO D) Enables a very large deployment ratio -=deployed over stowed dimension

工程热力学的两大类工质 1、理想气体( ideal gas) 可用简单的式子描述 如汽车发动机和航空发动机以空气为主的燃气、空调中的湿空气等。 2、实际气体( real gas 不能用简单的式子描述,真实工质火力发电的水和水蒸气、制冷空调中制冷工质等

19.2 Exhaustive enumeration 19.2.1 Definition and construction methods 19. 2.2 Applications 19.2.3 Properties of exhaustive enumeration methods 19.3 Space subdivision 19.3.1 Motivation and definitions 2233356677 19.3.2 Construction of octrees 19.3.3 Algorithms for octrees 19.3.4 Properties of octrees 19.3.5 Binary space subdivision

21 Object Matching 21.1 Various matching methods ..ti 21.2 Methods through localization/registration 21.3 Classification of matching methods 21.4 Problem statement. 21.4.1 Distance metric 21.4.2 Distance between a point and a parametric surface 21.4.3 Distance metric function 21.5 Matching problems: CGWOS, CPWOS, CGWS or CPWS