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Accuracy of Precise Point Positioning with GPS and GLONASS Satellites Constellation Using Online Web Services 使用在线Web服务的GPS和GLONASS卫星星座精确点定位的精度
2018 Baltic Geodetic Congress (BGC Geomatics) Pub Date : 2018-06-01 DOI: 10.1109/BGC-GEOMATICS.2018.00012
M. Malinowski
{"title":"Accuracy of Precise Point Positioning with GPS and GLONASS Satellites Constellation Using Online Web Services","authors":"M. Malinowski","doi":"10.1109/BGC-GEOMATICS.2018.00012","DOIUrl":"https://doi.org/10.1109/BGC-GEOMATICS.2018.00012","url":null,"abstract":"Precise Point Positioning is a method used to determine the absolute position of a GNSS receiver, which can be particularly useful in areas lacking in RTN infrastructure. Research conducted so far on the use of the PPP has been focused on the processing of at least one-hour observation sessions. This paper presents the results of a comparative analysis concerning the accuracy of position based on observations lasting between 0.5 to 6 hours with the use of PPP services. Calculations were performed using GPS and GLONASS constellations and Final products. The paper discusses the accuracy of simultaneous positioning of three points in the test network and its influence on the change in horizontal distances and height differences between triangle vertices. The study indicates that application of another satellite constellation effectively shortens the required measurement session while maintaining the same degree of accuracy as in observations performed with a single GPS constellation.","PeriodicalId":145350,"journal":{"name":"2018 Baltic Geodetic Congress (BGC Geomatics)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117231714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Inventory and Recording of Historic Buildings Using Laser Scanning and Spatial Systems 利用激光扫描和空间系统对历史建筑进行清查和记录
2018 Baltic Geodetic Congress (BGC Geomatics) Pub Date : 2018-06-01 DOI: 10.1109/BGC-GEOMATICS.2018.00070
Agnieszka Skwirosz, K. Bojarowski
{"title":"The Inventory and Recording of Historic Buildings Using Laser Scanning and Spatial Systems","authors":"Agnieszka Skwirosz, K. Bojarowski","doi":"10.1109/BGC-GEOMATICS.2018.00070","DOIUrl":"https://doi.org/10.1109/BGC-GEOMATICS.2018.00070","url":null,"abstract":"The use of modern land surveying methods and interpretation of the results extends the possibilities of their use and broadens the range of application. Surveying by means of laser scanning which enables gathering data in a 3D space may be of great significance in the acquisition of data. Combined with the computer modelling of objects and surfaces, it is an efficient process which can be used in the detailed inventory and spatial evaluation of the objects. The paper presents the technological process of inventorying and recording historic buildings based on railway bridges in Olsztyn. Various types of software for computer processing of spatial information in three-dimensional systems were used to interpret the results of measurements performed by means of the Laica ScanStation scanner","PeriodicalId":145350,"journal":{"name":"2018 Baltic Geodetic Congress (BGC Geomatics)","volume":"2003 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125779681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Autonomous Vessels' Pathfinding Using Visibility Graph 基于可见性图的自主船舶寻路
2018 Baltic Geodetic Congress (BGC Geomatics) Pub Date : 2018-06-01 DOI: 10.1109/BGC-GEOMATICS.2018.00026
E. Kulbiej
{"title":"Autonomous Vessels' Pathfinding Using Visibility Graph","authors":"E. Kulbiej","doi":"10.1109/BGC-GEOMATICS.2018.00026","DOIUrl":"https://doi.org/10.1109/BGC-GEOMATICS.2018.00026","url":null,"abstract":"The aim of this paper is to present an algorithm for pathfinding in confined environment. Initially, the state of art concerning route generation is provided and briefly discussed. Specific geographical terrain is provided and converted into twodimensional polygon-shaped environment. Several scenarios of initial and destination points for ship's journey are provided, for all of which a trajectory is generated using visibility graph method (VGM). The main purpose of the article is underlined in the section providing results of a numerical experiment on generating path to follow for a seaborne object in mentioned confined environment. The paper is concluded with a discussion regarding application of said algorithms in autonomous vessels' technology as well as with an assessment of the algorithm's efficiency.","PeriodicalId":145350,"journal":{"name":"2018 Baltic Geodetic Congress (BGC Geomatics)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121308120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Methodology for Comparing Maps of Spatial Error Distribution of Digital Terrain Models 数字地形模型空间误差分布图的比较方法
2018 Baltic Geodetic Congress (BGC Geomatics) Pub Date : 2018-06-01 DOI: 10.1109/BGC-GEOMATICS.2018.00056
L. Kulesza
{"title":"Methodology for Comparing Maps of Spatial Error Distribution of Digital Terrain Models","authors":"L. Kulesza","doi":"10.1109/BGC-GEOMATICS.2018.00056","DOIUrl":"https://doi.org/10.1109/BGC-GEOMATICS.2018.00056","url":null,"abstract":"The paper presents the usage of several methods for estimation of the spatial distribution of error in GRID 2.5D Digital Terrain Models. Most of them allow generating error and its standard deviation spatial distribution maps in many configurations depending on a number of parameters. An attempt has been made at developing a comparative algorithm to select the variant for which the best results were obtained. Moreover, it can be applied to compare different methods with each over. A prerequisite is the possession of reference data for which their faultlessness can be assumed. Research has shown that empirical formulas are the most universal method for estimating spatial accuracy of DTMs.","PeriodicalId":145350,"journal":{"name":"2018 Baltic Geodetic Congress (BGC Geomatics)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121068869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Spatial Analysis of Selected Categories of Offences in Krakow Based on Data from the National Safety Risk Map 基于国家安全风险地图数据的克拉科夫部分犯罪类别空间分析
2018 Baltic Geodetic Congress (BGC Geomatics) Pub Date : 2018-06-01 DOI: 10.1109/BGC-GEOMATICS.2018.00010
Agnieszka Polończyk, A. Leśniak
{"title":"A Spatial Analysis of Selected Categories of Offences in Krakow Based on Data from the National Safety Risk Map","authors":"Agnieszka Polończyk, A. Leśniak","doi":"10.1109/BGC-GEOMATICS.2018.00010","DOIUrl":"https://doi.org/10.1109/BGC-GEOMATICS.2018.00010","url":null,"abstract":"The article presents the results of a study on the spatial distribution of acts of vandalism and alcohol consumption in prohibited areas. The study made use of data on offences committed in Krakow, reported by citizens of the city and illustrated on an interactive map - the National Safety Risk Map. The gathered data was calibrated and generalised. Then, a map was prepared illustrating the spatial distribution of both categories of offences in different sub-districts in Krakow, as well as a choropleth map of both types of offence. Two methods were used for examining the interrelationship between these offences - regression analysis using the Poisson regression model with a linear correction of the dispersion and dual kernel density estimation with a \"hot spot\" analysis. The study constitutes the first systematic attempt to analyse NSRM data with regard to the spatial distribution and spatial co-occurrence of two common offences in Krakow.","PeriodicalId":145350,"journal":{"name":"2018 Baltic Geodetic Congress (BGC Geomatics)","volume":"186 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124930721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Cartographical Presentation of BIM Models BIM模型的制图展示
2018 Baltic Geodetic Congress (BGC Geomatics) Pub Date : 2018-06-01 DOI: 10.1109/BGC-GEOMATICS.2018.00029
D. Gotlib, Michał Wyszomirski
{"title":"Cartographical Presentation of BIM Models","authors":"D. Gotlib, Michał Wyszomirski","doi":"10.1109/BGC-GEOMATICS.2018.00029","DOIUrl":"https://doi.org/10.1109/BGC-GEOMATICS.2018.00029","url":null,"abstract":"Article discusses the need of standardized methods of cartographical presentation of BIM data. Several examples of data visualization methods used by Facility Management systems and indoor navigation applications are provided. The authors pay their attention to the lack of standards of data visualization in both domains and propose adoption of cartographical presentation methods to building floor plans created from BIM models. The research carried out and described in this paper is aimed at integrating into the process of creating a cartographic method of interior building presentation. At this stage, only an attempt was made to assess the potential for cartographic visualization of BIM data and to show examples of presentations in which cartographic methodology is needed. The presentations of interiors presented at this stage are of a demonstrative nature.","PeriodicalId":145350,"journal":{"name":"2018 Baltic Geodetic Congress (BGC Geomatics)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134241181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Tree Detection around Forest Harvester Based on Onboard LiDAR Measurements 基于机载激光雷达测量的森林收割机周围树木检测
2018 Baltic Geodetic Congress (BGC Geomatics) Pub Date : 2018-06-01 DOI: 10.1109/BGC-GEOMATICS.2018.00075
Satu Sihvo, Petra Virjonen, P. Nevalainen, J. Heikkonen
{"title":"Tree Detection around Forest Harvester Based on Onboard LiDAR Measurements","authors":"Satu Sihvo, Petra Virjonen, P. Nevalainen, J. Heikkonen","doi":"10.1109/BGC-GEOMATICS.2018.00075","DOIUrl":"https://doi.org/10.1109/BGC-GEOMATICS.2018.00075","url":null,"abstract":"This paper proposes a new approach for the detection of tree locations around forest machines producing a situational model based on on-site terrestrial LiDAR data collected during harvesting operation. A triangularized ground model is used to planarize the point cloud in order to simplify the tree detection. The planarized ground makes the vertical cutting of the point cloud systematical. Tree stem lines detected from individual trees at individual scan views are used to guide the final alignment into global coordinates. The setup is numerically efficient and does not rely on any positioning and orientation system (POS) based e.g. on an inertial measurement unit (IMU) or global navigation satellite system (GNSS) or wheel rotation counter on the autonomous vehicle.","PeriodicalId":145350,"journal":{"name":"2018 Baltic Geodetic Congress (BGC Geomatics)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122058573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Assessing the Significance of Displacements Using Local Coefficients of Variance as an Alternative to the Classical Approach 利用局部方差系数作为经典方法的替代方法来评估位移的重要性
2018 Baltic Geodetic Congress (BGC Geomatics) Pub Date : 2018-06-01 DOI: 10.1109/BGC-GEOMATICS.2018.00021
D. Filipiak-Kowszyk, W. Kaminski, Karolina Makowska
{"title":"Assessing the Significance of Displacements Using Local Coefficients of Variance as an Alternative to the Classical Approach","authors":"D. Filipiak-Kowszyk, W. Kaminski, Karolina Makowska","doi":"10.1109/BGC-GEOMATICS.2018.00021","DOIUrl":"https://doi.org/10.1109/BGC-GEOMATICS.2018.00021","url":null,"abstract":"The safety of use of civil engineering structures remains an important issue that is approached by various sciences. Due to this fact, geodetic control measurements are conducted with the purpose of identifying threats connected with the potential displacement of structural elements. In this context, the authors discuss issues connected with determining the displacements of controlled points located in the studied object in a three-dimensional space. Accuracy analysis is crucial in the geodetic interpretation of a data set. Utilising the measurement results of local coefficients of variance specified for isolated subsets authenticates mean measurement error values, and, thereby, the accuracy of estimation results. The modified Henderson's method (MHM) for determining local coefficients of variance was employed as a means of data adjustment. The authors also performed the analyses of the results obtained using the MHM with the results obtained on the basis of single global estimator of the coefficient of variance.","PeriodicalId":145350,"journal":{"name":"2018 Baltic Geodetic Congress (BGC Geomatics)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129629947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
BGC-Geomatics 2018 Acknowledgments
2018 Baltic Geodetic Congress (BGC Geomatics) Pub Date : 2018-06-01 DOI: 10.1109/bgc-geomatics.2018.00006
{"title":"BGC-Geomatics 2018 Acknowledgments","authors":"","doi":"10.1109/bgc-geomatics.2018.00006","DOIUrl":"https://doi.org/10.1109/bgc-geomatics.2018.00006","url":null,"abstract":"","PeriodicalId":145350,"journal":{"name":"2018 Baltic Geodetic Congress (BGC Geomatics)","volume":"2003 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128564755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Autonomous Vessel with an Air Look 具有空中观察功能的自主船只
2018 Baltic Geodetic Congress (BGC Geomatics) Pub Date : 2018-06-01 DOI: 10.1109/BGC-GEOMATICS.2018.00025
J. Koszelew, P. Wołejsza, D. Ołdziej
{"title":"Autonomous Vessel with an Air Look","authors":"J. Koszelew, P. Wołejsza, D. Ołdziej","doi":"10.1109/BGC-GEOMATICS.2018.00025","DOIUrl":"https://doi.org/10.1109/BGC-GEOMATICS.2018.00025","url":null,"abstract":"This article presents the conception and assumptions of innovative technology under the acronym AVAL - Autonomous Vessel with an Air Look concerning on Unmanned Surface Vehicle (USV) which applies UAV for the collection of additional navigation data. The AVAL technology is now developed as an R & D project co-financed by the National Research and Development Center in Poland. The aim of the AVAL project [1] is developing a technology of autonomous marine vessel, which is integrated with navigation devices, autopilots and control systems of the modern ship. AVAL constitutes a breakthrough innovation in the market of maritime transport. One of them is UAV, which is responsible for observation, detection, and recognition of objects in the nearby area. Others are autonomous navigation, automatic negotiations and communication.","PeriodicalId":145350,"journal":{"name":"2018 Baltic Geodetic Congress (BGC Geomatics)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131459724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
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