STK：用STK规划星际任务

Whenplanning and conducting space missions, scientists and engineers must accountfor a wide range of unique challenges in flight dynamics and systemperformance. STK can be used to model accurate trajectories and orbits withfull-flight dynamics with respect to mission requirements, leveraginguser-definable force models, coordinate systems and attitude definitions. Userscan also conduct trade studies and parametric analyses to optimizetrajectories, plan maneuvers and evaluate spacecraft engine design.

当计划实施星际任务时，科学家和工程师在飞行动态特性和系统性能方面面临很多挑战，STK可以在充分考虑飞行动态特性和任务需求对轨道进行精确建模，用户可以自定义受力模型、坐标系和姿态。用户还可以进行专业分析和参数优化，对轨道进行优化，计划机动，评估飞船发动机的设计。

Along withits proven capabilities as a complex spacecraft trajectory and maneuvermodeling solution, the STK software suite promotes the quick and easyconfiguration of work environments for on-demand, high-fidelity analyses ofspace missions around any planetary body. With mission planning tools tosimulate critical system performance and operational tools to evaluate real-timesystem performance, AGI technology supports the mission from design, to launch,through mission end-of-life. 

STK对飞船复杂轨道和机动建模的能力已经得到证明，STK软件致力于快速方便配置工作环境，以满足针对任何星体的星际任务的快速响应能力和高精度分析要求。任务规划工具能够对关键系统的性能进行仿真，操作工具能够评估实时系统的性能，AGI能够为星际任务提供从设计、发射直至结束全生命周期的服务。

KeyFeatures  关键特征

· TrajectoryDesign and Maneuver Planning

 

·                               LEO, MEO, HEO, GEO, lunar and interplanetary低、中、高地球轨道；地球同步轨道；月球；星际

·                               Trajectory design and optimization  轨道设计和优化

·                               Launch window analysis  发射窗口分析

·                               Station keeping  位置保持

·                               Rendezvous and proximity operations对接、接近操作

·                               Formation flying编队飞行

·                               Swing-by and capture maneuvering 绕行星变轨和捕获机动

·    Descent and landing  下降和着陆

 

·Spacecraftand Mission Design飞船和任务设计

 

·                               Analyze power generation based on solararray sizing, placement, orientation and obscuration根据太阳帆阵列大小、安放位置和光照情况分析能源

·                               Optimize engine performance and fuel budgets 优化发动机性能和需用燃料

·                               Model communications with antenna pointing   对考虑天线指向的通信系统建模

·                               Payload design and performance (sensor FOV,coverage) 负载设计和性能分析（传感器视野，覆盖范围）

·                               Optimize communication system groundnetworks, relays and performance 优化通信系统的地面传输网络、时延和性能

 

·OrbitDetermination and Tracking Network Performance轨道确定和跟踪网络性能

 

·                               Realistic error covariance analysis符合实际的误差协方差分析

·                               Tracking system design and schedulevalidation跟踪系统设计和计划验证

·                               Requirements verification需求验证

 

· TradeStudy Optimization专业分析优化

 

·                               Conduct trade studies and parametricanalyses to optimize trajectories, plan maneuvers and evaluate spacecraftengine design  通过专业和参数分析优化轨道，计划机动和评估飞船发动机设计

 

· Scheduling任务规划

 

·                               Optimize scheduling of mission resources forsingle or repeating tasks   对单个或重复任务的资源进行任务优化

·                               Identifying time windows and availableground antennas for uplink to satellite assets directly or via crosslink为地面天线上行至卫星的通信链路确定可用时间窗口

 

·MissionOperations and Visualization任务操作和可视化

 

·                               Space Catalog conjunction analysis空间星历分析

·                               Integrated 2D and 3D window situationalawareness   集成化的2D和3D的态势感知窗口

·                               Links to real-time track data 实时跟踪数据的链路

·                               Launch visualization and other criticalevents发射及其它关键事件的可视化

 

·SpaceWeather Effects空间环境影响

 

·                                 Radiation environment  辐射环境

·                                 South Atlantic Anomaly model 南大西洋异常模型

·                                 Magnetic field models and coordinate frames 磁场模型和坐标系

·                                 Particle impacts 粒子影响

·                                 Vehicle temperature运载工具温度

 

相关资料（链接至AGI网站，翻墙阅读、下载）

Case Studies

·                                                Galileo In-Orbit Test Operational Planning  伽利略卫星在轨测试操作规划

·                                                JAXA's KAGUYA (SELENE) Mission   JAXA的KAGUYA任务

·                                                NASA Space Communication Network Architecture Analysis NASA空间通信网络结构分析

·                                                Space Data Association's Space Data Center Enables Fast, Accurate RFIGeolocation and Conjunction Analysis

·                                                Star One and NOAA Sats Share Longitude

·                                                STK Supports NLR's Space Systems Engineering and Operations Projects

·                                                Studying Mercury MESSENGER Data with STK

White Papers

·                                                Attitude Parameterizations as Higher Dimensional Map Projections

·                                                Curvilinear Coordinates for Covariance and Relative Motion Operations

·                                                Leveraging COTS Software to Identify and Mitigate Risk During LaunchOperations

·                                                Optimal Fusion of Vector Observations with Angle or GPS Phase DifferenceObservations for Three-Axis Attitude Determination

·                                                Some Directions in Spin-Axis Attitude

更多STK学习资料免费下载：

http://download.youkuaiyun.com/user/appe1943