【作者】 李军；

【导师】 李玉柏； 周文胜；

【作者基本信息】 电子科技大学 ， 工程硕士（专业学位）， 2017， 硕士

【摘要】 近年来,各类位移和形变导致的自然灾害时有发生,如山体滑坡、公路边坡崩塌、桥梁垮塌、大坝沉降、楼宇形变沉降等,给人民群众生命及财产安全带来了巨大的威胁。针对这些位移和形变灾害,传统手段存在监测不及时、费效比低等缺点。在卫星导航技术引入监测领域后,其高精度、全天候、全自动等优点得到位移和形变监测领域的普遍关注。我国自主的北斗卫星导航系统已经覆盖亚太地区,并提供定位、导航和授时以及短报文通信服务的能力,开展基于北斗的高精度监测应用的研究具有迫切的现实需求并且已经具备实施条件。本论文正是针对高精度监测应用需求,深入分析当前各类监测应用对监测系统精度、可靠性、可用性、完好性的特殊需求,讨论了北斗高精度定位相关的观测模型、误差来源及改正方法等,然后对高精度定位中载波相位差分解算、载波相位平滑伪距等关键技术进行了详尽的讨论和研究,基于以上关键技术研制了一套具有自主产权的北斗高精度监测系统并开展了示范应用,主要内容为:1、研究了北斗高精度定位方法,针对伪距差分,提出了一种基于卡尔曼滤波的载波相位平滑伪距方法,满足了多历元及动态条件下的应用需求。针对载波相位差分,实现了基于LAMBDA算法整周模糊度的快速解算,该解算方法降低了固定整周模糊度需要的历元数,实现了稳定的毫米级精度的位置解算。2、研制了包含监测站接收机、数据处理及预警软件的北斗高精度监测系统,该系统针对广巴高速某一具有滑坡风险的边坡进行了应用部署,取得了良好的应用示范效果。更多还原

【Abstract】 In recent years,kinds of natural disasters caused by displacement and deformation have occurred,such as landslides,road slope collapse,dam settlement,building settlement and deformation,etc.,witch takes great threat to human’s life and property security.Traditional methods are not timely and costly to these displacement and deformation disasters.with satellite navigation technology introducing into monitoring field can provides advantages of high precision,all-weather,automatic,and it quickly become an important method of displacement and deformation monitoring.China’s beidou satellite navigation system(BDS)have coverage in the asia-pacific region and provide positioning,navigation,timing and short message communication service ability.Therefore,research of high precision monitoring application based on beidou has urgent realistic demand and has implemented conditions.This thesis is aimed at requirements of our country’s independent high-precision monitoring system based on BDS,in-depth analysis the special needs of monitoring application by current monitoring system,such as precision,reliability,availability,and integrity.This thesis discussed the observation model,error sources and correction methods related to high precision positioning of BDS.the carrier phase difference carrier,phase smoothing pseudorange and other key technology has passed through detailed discussion and research,and form a set of high precision monitoring system based on BDS with independent property rights based on above key technology,this system has carried out demonstration application.main content as follows:1.In this paper,a high precision positioning method of BDS is studied,According to the pseudorange difference,a method of carrier phase smoothing pseudorange based on kalman filter is proposed.It can meet the application requirements of multi Epoch and dynamic conditions.According to the carrier phase difference,to achieve a rapid solution of LAMBDA algorithm of ambiguity resolution based on the calculation method of reducing the fixed integer ambiguity of epoch need,to achieve a stable millimeter precision position solution.2.The development of the high precision monitoring system includes a monitoringstation system,data processing and early warning software,the system used for the deployment of Guangba expressway has a slope landslide risk,get a good demonstration effect.更多还原