基于Android的通航机载导航与位置报告系统

发布时间：2018-01-09 02:27

本文关键词：基于Android的通航机载导航与位置报告系统　出处：《中国民航大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着我国低空空域的逐步开放,通用航空飞行需求急剧增长,机载导航系统作为保障通航航行安全的重要系统,其重要性日益凸显。由于通用航空器具有体积小、种类多、价格低等特点,通用航空对于机载系统的移动性、便携性和灵活性的需求不断提高。本文通过分析通用航空对于导航、通信技术便携性的需求,提出了便携式通航导航与通信服务的设计方案。利用Android系统框架与应用组件,结合Android系统特性,设计了基于Android的通航机载导航与位置报告系统。首先,为了实现导航功能,系统将航空器定位在航图上,利用航图提供导航数据。本文采用拟合算法对航图进行坐标标定,完成了经纬度坐标到航图像素坐标的转换,实现了航空器的定位与导航。仿真结果表明,拟合算法有较高的精度,可以满足标定需求。其次,由于航图数据量大,为了节约系统占用的内存空间,本文采用四叉树算法对航图进行分割与分层处理,以减少内存占用,保证了系统的稳定运行。再次,在航图标定与航图四叉树管理的基础上,系统以航图为背景,将航空器定位在航图上,通过航图的平移、旋转变换实现航空器在航图中位置的更新。最后,本文设计了位置报告功能,系统以短信形式向外发送通用航空器的飞行情报信息,该设计利用Android系统的短信服务功能实现通信功能。位置报告功能作为导航功能的补充,有效的保证了飞行安全。本文在以上工作的基础上,实现了基于Android的通航机载导航与位置报告系统,经验证,系统功能完善、稳定,能够满足通用航空对于导航与通信的需求,具有较强的研究价值和实用价值。
[Abstract]:With the gradual opening of China's low altitude airspace, general aviation flight demand growth, an important system for airborne navigation system as ensuring navigation safety of navigation, its importance has become increasingly prominent. Because the general aircraft has the advantages of small volume, variety, low price, general aviation airborne system for mobility, portability and flexibility of demand increases through analysis of general aviation for navigation and communication technology, the requirement of portability, puts forward the design scheme of portable navigation navigation and communication services. The Android system framework and application components by combining Android system characteristics, the design of Android navigation system based on airborne navigation and position reporting. First of all, in order to realize the navigation function, the system will aircraft positioning in the chart, the chart provides navigation data. This paper uses the fitting algorithm of coordinate calibration on the chart, completed by Convert latitude coordinates to pixel coordinates of the chart, positioning and navigation of aircraft. The simulation results show that the algorithm has high fitting precision, can satisfy the calibration demand. Secondly, the chart of large amount of data, in order to save the system memory space, this paper uses four tree segmentation algorithm and hierarchical processing on the chart to to reduce memory usage, to ensure the stable operation of the system. Thirdly, based on the calibration chart and chart four tree management system as the background, to chart the aircraft positioning in the chart, the chart of the translation, the aircraft position in the chart in the update to achieve rotation transformation. Finally, this paper designs the position reporting function the system in the form of text messages sent out the flight information general aircraft, the design of using Android system to realize the communication function. The function of SMS service position report function as a navigation function To supplement, to effectively guarantee the flight safety. Based on the above work, the implementation of the Android navigation airborne navigation and position reporting system, based on the verification results show that the system has perfect function, stable, can meet the general aviation for navigation and communication needs, has a strong research value and practical value.

【学位授予单位】：中国民航大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：V249.3

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