复杂低空飞行中机会信号导航的信号优选及融合定位方法研究

项目名称： 复杂低空飞行中机会信号导航的信号优选及融合定位方法研究

项目编号： No.61501014

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 郑磊

作者单位： 北京航空航天大学

项目金额： 18万元

中文摘要： 精准导航定位引导是飞行器安全飞行的保障。然而，在复杂低空应急救援飞行环境中，卫星导航信号易被地形遮挡，导航技术难以发挥导航定位的作用。因此，本项目提出采用机会信号与GPS 融合导航方法，从而提升导航信息不完备情形下复杂低空飞行的导航可用性及精确性。针对复杂低空环境飞行器高动态变化、机会信号分布不规则、机会信号多源异质等关键问题，本项目深入分析机会信号特性，建立机会信号动静态分离式质量模型，提升机会信号对高动态用户辅助导航的可用性；以信号质量模型为基础，研究机会信号分布不规则的信号层次优选方法，解决机会信号不连续的信号选择问题，提高导航定位的精确性；提出多源异质机会信号与GPS的协同进化融合定位算法，提高算法运行的效率；并以航空应急救援为场景，搭建复杂低空飞行的机会信号与GPS融合导航平台。本项目旨在突破多源异质机会信号与GPS融合定位的关键技术，为复杂低空飞行的导航定位提供理论和方法支撑。

中文关键词： 导航定位；辅助定位；GPS

英文摘要： Precise navigation posioning ensures the flight safety. However, it is possible that satellites are hidden for the avation emergency rescue in the complex low airspace. The navigation technology is restricted to play its role. Therefore, in this project the fusion navigation method with signals of opportunity and GPS is proposed to improve the navigation availability and accuracy for incompleteless navigation information in the complex low airspace. Aiming at the key problem of airplanes high dynamic variation, the irregular distribution in the complex low airspace, the multi-source and neterogeny of signals of opportunity, this project will analyse the properties of signals of opportunity and build the signal quality model with the seperation for dynamics and statics to promote the availability of signals of opportunity assisted navigation for high dynamic users. Based on the signal quality model, the stratified optimization choice method for signals of opportunity will be presented in the irregular distribution to solve signals discontinuous problems, increasing the positioning accuracy. Then, the conevolution fusion positioning algorithm for multi-source and neterogeny signals and GPS will be raised to improve the algorithm computation efficiency. Lastly, at the aviation emergency rescue scene, the simulation platform will be set up for the fusion navigation positioning with signals of opportunity and GPS. This project is to break through the key technology of the fusion navigation with multi-source and neterogeny signals and GPS, providing theoretical and methodological basis for the aviation emergency rescue navigation in the complex low airspace.

英文关键词： navigation and positioning;assisted positioning;GPS