【作者】 王启磊；

【导师】 徐爱功；

【作者基本信息】 辽宁工程技术大学 ， 大地测量学与测量工程， 2011， 硕士

【摘要】 随着流动站与参考站之间距离的增加,常规RTK定位精度和可靠性降低、服务范围有限(一般在10km以内)、成本增加、作业效率低下、通信数据链路狭隘和模糊度求解困难等问题的出现已经远远不能满足人民的需要。因此,城市连续运行参考站网络系统应运而生。本文以宁波连续运行参考站系统(NBCORS)为例取得了如下成果：简要的介绍了本课题的目的和意义、国内外研究现状、研究的目标、内容、和方法；详细探讨了CORS建站的四种主流技术(VRS、FKP、MAC、ARS),为CORS系统的建设提供了技术支持；研究了CORS的误差来源和消除或者减弱途径。系统的研究了整个CORS系统的测试流程：基准站的选址和建设、基准站网的联测和坐标转换问题的研究、系统的定位精度检测方法研究、空间可用性研究、时间可用性研究、定位服务的时效性研究和系统兼容性研究。在系统的定位精度检测方法方面,总结CORS定位精度可靠性已有检验方法(如静态已知点检测法、实时动态观测值与后处理结果比较的检测方法、动态规则几何轨迹检测方法和基线相对长度检测方法等)的基础上,提出了新的检测方法有不同时间段检测法、不同高程检测法、周围环境检测法,使系统可靠性检测方法更加完备；在空间可用性方面,选择了开阔地、高层建筑物附近、树林、湖泊边、山腰和山谷等地来研究；在时间可用性方面,研究了影响系统定位精度和初始化时间的各种因素：有效卫星数量、GODP值、流动站到参考站已经的距离和周围环境等,并做了定量分析；在系统兼容性方面,选择了8种不同型号的双频接收机进行了研究。更多还原

【Abstract】 With the distance between the rover and reference station increasing, conventional RTK technology which positioning accuracy and reliability of the reduced scope of services was limited (generally less than 10km), the cost increased and operational efficiency was low, data link communications was narrow, the difficulties of ambiguity and so on, which has been far from satisfying people’s needs. Therefore, the city continuously operating reference station network system came into being.In this paper, Ningbo continuously operating reference station system (NBCORS) as an example to obtain the following results:Briefly introduces the purpose and significance of this topic, research status, of the objectives, content, and methods; and CORS establishment of the station’s four mainstream technology (VRS, FKP, MAC, ARS) of doing a detailed analysis of for the construction of CORS system provides technical support; of the CORS error sources and ways to eliminate or weaken.The CORS system of the entire testing process as such:base stations selection and construction of base stations, base station network and coordinate the joint measurement of conversion issues, the system detection method of positioning accuracy, availability of space, time availability, system compatibility study.Positioning accuracy in the detection system, the summary of the reliability of positioning accuracy have been tested CORS method (known as static detection method, real-time dynamic observed and compared the results after the detection method, the geometric dynamic rules relative path detection methods and baseline length of the detection method, etc.) based on the proposed new detection methods have different detection time, detection of different elevation, the surrounding environment detection, the system reliability of the detection method is more complete; in space availability, select the open terrain, nearby high-rise buildings, trees, lakes edge, hillside, valley and other places to study; availability in time to study the impact of the system initialization time positioning accuracy and a variety of factors:the effective number of satellites, GODP value to the reference station has been the distance and the surrounding environment, and has done a quantitative analysis; in the system compatibility, choose 8 different models of dual-frequency receivers were studied.更多还原