搜索结果: 1-15 共查到“测绘科学技术 RTK”相关记录39条 . 查询时间(0.031 秒)
高精度的大气改正是加快PPP-RTK收敛的重要前提。本文以区域跟踪网台站数据为基础，基于非差非组合PPP提取斜路径电离层和天顶对流层延迟，作为PPP-RTK大气建模的数据源。电离层延迟采用基于斜路径星间单差的改正模型，对流层采用非差天顶对流层模型，设计了相关的服务端和用户端软件系统。在系统设计上，通过服务端提取数据构建大气模型并播发，用户端接收参数并用于实时PPP-RTK定位。对上海区域进行服务端...
EVALUATING THE POTENTIAL OF RTK-UAV FOR AUTOMATIC POINT CLOUD GENERATION IN 3D RAPID MAPPING
Unmanned aerial system Real time kinematic Point clouds generation Bundle adjustment Digital surface model Lever arm calibration Sensor synchronization
2016/11/15
During disaster and emergency situations, 3D geospatial data can provide essential information for decision support systems. The utilization of geospatial data using digital surface models as a basic ...
COASTLINE CHANGE ANALYSIS USING RTK-GPS AND AERIAL PHOTO
Coastline RTK-GPS Qualitative analysis Time series analysis
2015/12/28
According to the survey data during the Japanese Occupation Period, the length of South Korea's coastline is about 11,542km, including the coastlines of mainland and islands. To accurately revise/rene...
PRICISE TARGET GEOLOCATION BASED ON INTEGERATION OF THERMAL VIDEO IMAGERY AND RTK GPS IN UAVS
Thermal Video RTK Geolocation Kalman Filter Unmanned Aerial Vehicle
2016/1/15
There are an increasingly large number of uses for Unmanned Aerial Vehicles (UAVs) from surveillance, mapping and target geolocation. However, most of commercial UAVs are equipped with low-cost naviga...
Test Results of RTK and Real-Time DGPS Corrected Observations Based on NTRIP Protocol
GPS Real-Time DGPS RTK NTRIP Protocol Accuracy
2015/12/3
For many years, real-time DGPS and RTK correction data distribution have been providing GPS users a means to accomplish their tasks with high accuracy positioning in real-time. Dial-up systems over ph...
HEIGHT ACCURACY BASED ON DIFFERENT RTK GPS METHOD FOR ULTRALIGHT AIRCRAFT IMAGES
Aerial images positioning image processing accuracy
2015/9/21
Height accuracy is one of the important elements in surveying work especially for control point’s establishment which requires an accurate measurement. There are many methods can be used to acquire he...
一种能实现单频PPP-RTK的GNSS局域参考网数据处理算法
单频PPP-RTK 卫星相位偏差 电离层延迟
2015/7/27
全球范围内大量布设的GNSS(Global Navigation Satellite System)参考网为精密定位、导航和授时等应用提供了丰富的数据资源.基于局域参考网,先后发展了若干侧重实现双频精密定位的技术,如NRTK(Network Real Time Kinematic),PPP(Precise Point Positioning)和PPP-RTK等.其中,PPP-RTK融合了NRTK和...
Application of REAL TIME GIS using RTK-GPS for Local Government
Geography Mapping GIS GPS/INS Real-time
2015/6/1
Much local government has been using a large scale digital map with Information System (GIS). GIS will be able to work efficiently and to reduce the costs of mapping. However, the maintenance and rene...
THE USE OF DGPS-RTK MEASUREMENTS THROUGH GSM NETWORK FOR GIS ENVIRONMENTS
GPS GSM DGPS RTK geodetic survey navigation direct georeferentiation
2015/6/1
The necessity to get positioning in the most precise way and in the briefest time assumes great importance either in the navigational field or in the geodetic surveys. The GPS system is really the mos...
昆明冶金高等专科学校测绘与计算机信息学院控制测量学课件 RTK的应用和操作。
RTK初始化后，只需固定后续观测引入的新模糊度。这些模糊度由于观测时间长短不同而精度差异较大，不可能同时可靠地固定。因此，RTK模糊度固定通常采用bootstrapping方法只固定能可靠固定的部分模糊度。Bootstrapping实质是序贯四舍五入，其可靠性依赖于四舍五入的可靠性，因此控制四舍五入的纳伪概率是实现RTK可靠性的关键。本文研究纳伪概率可控的四舍五入方法，从含多个备选假设的假设检验理...
高精度GNSS定位算法PPP-RTK研究进展
高精度GNSS定位算法 PPP-RTK 研究进展
2011/10/25
精密单点定位（PPP）和网络实时动态定位（NRTK）是目前全球导航卫星系统（GNSS）定位的两项代表性技术。随着多频、多GNSS系统时代的到来，这两种技术的理论和实施缺陷日益凸显。测地所研究人员基于近年来在GNSS数据处理理论方面的科研积累，提出一种融合PPP和NRTK技术优势的新算法（PPP-RTK算法）可同时满足未来多频、以及当前单频等领域的应用需求，具有较强的实用价值和可推广性。新算法的技术...
本文提出一种长距离网络RTK基准站间的整周模糊度单历元确定方法。该方法首先利用载波相位模糊度间的线性约束关系对双差宽巷模糊度进行搜索。为了减小非弥散误差残差对载波相位模糊度解算的影响，采用了一种新的根据高度角重新选择基准卫星的方法。然后根据双差宽巷模糊度选取双频载波相位模糊度的备选组合，利用基准站间非弥散误差残差的计算值对双差载波相位模糊度进行搜索和确定。经实验算例的验证，该方法快速、稳定、不受周...
A PRECISE, LOW-COST RTK GNSS SYSTEM FOR UAV APPLICATIONS
RTK GNSS Low-cost Kinematic UAVs, Machine Control Single-Frequency-Receiver
2014/5/9
High accuracy with real-time positioning of moving objects has been considered a standard task of engineering geodesy for 10 to 15
years. An absolute positioning accuracy of 1-3 cm is generally poss...
TESTING goGPS LOW-COST RTK POSITIONING WITH A WEB-BASED TRACK LOG MANAGEMENT SYSTEM
Web based Cooperation Software GPS/INS Accuracy,Real-time
2014/6/12
Location-based online collaborative platforms are proving to be an effective and widely adopted solution for geospatial data collection, update and sharing. Popular collaborative proje...