Pub Date : 2023-11-01DOI: 10.1061/jsued2.sueng-1461
Rovane Marcos de França, Ivandro Klein, Luis Augusto Koenig Veiga
Having available reference networks close to working areas minimizes error propagation and reduces costs to society when surveying or setting out engineering projects. The densification of reference networks using the Global Navigation Satellite System resulted in a more agile and cost-effective process. However, in locations with a signal obstruction or multipath—typical of urbanized areas—the solution is still to densify through direction and distance observations with total station. Traverse is the most widely applied among the conventional methods, although it has a higher error propagation. Triangulateration, in turn, is a method with higher redundancy and, therefore, less error propagation, but is also less productive, especially in urbanized areas. In this study, we present a new method for the densification of horizontal reference networks through multiple free stations, eliminating centering errors and allowing for unique and simultaneous adjustment of network points. To conduct an a priori quality analysis, the proposed method was compared with triangulateration and traverse methods considering the absolute confidence ellipses of network points; the relative confidence ellipses of the alignments; and the redundancy numbers of the observations in a simulated horizontal network. Although the redundancy of triangulateration guarantees higher reliability, the experiments showed that the multiple free stations method is more productive than traverse and triangulateration as it does not require the target points to be occupied. Besides that, it also provides better precision, that is, smaller confidence ellipses due to centering error elimination.
{"title":"Horizontal Reference Network Densification by Multiple Free Stations","authors":"Rovane Marcos de França, Ivandro Klein, Luis Augusto Koenig Veiga","doi":"10.1061/jsued2.sueng-1461","DOIUrl":"https://doi.org/10.1061/jsued2.sueng-1461","url":null,"abstract":"Having available reference networks close to working areas minimizes error propagation and reduces costs to society when surveying or setting out engineering projects. The densification of reference networks using the Global Navigation Satellite System resulted in a more agile and cost-effective process. However, in locations with a signal obstruction or multipath—typical of urbanized areas—the solution is still to densify through direction and distance observations with total station. Traverse is the most widely applied among the conventional methods, although it has a higher error propagation. Triangulateration, in turn, is a method with higher redundancy and, therefore, less error propagation, but is also less productive, especially in urbanized areas. In this study, we present a new method for the densification of horizontal reference networks through multiple free stations, eliminating centering errors and allowing for unique and simultaneous adjustment of network points. To conduct an a priori quality analysis, the proposed method was compared with triangulateration and traverse methods considering the absolute confidence ellipses of network points; the relative confidence ellipses of the alignments; and the redundancy numbers of the observations in a simulated horizontal network. Although the redundancy of triangulateration guarantees higher reliability, the experiments showed that the multiple free stations method is more productive than traverse and triangulateration as it does not require the target points to be occupied. Besides that, it also provides better precision, that is, smaller confidence ellipses due to centering error elimination.","PeriodicalId":210864,"journal":{"name":"Journal of Surveying Engineering-asce","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134956828","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}
Pub Date : 2023-02-01DOI: 10.1061/(asce)su.1943-5428.0000417
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Pub Date : 2021-11-01DOI: 10.1061/(ASCE)SU.1943-5428.0000359
Hangbin Wu, Han Yue, Jie Han, Songlin Zhang
AbstractIndoor high-precision maps are necessary for many applications, including robot navigation and location-based services. Raw indoor map boundaries are too irregular and coarse to be used in ...
{"title":"Indoor Map Boundary Correction Based on Normalized Total Least Squares of Condition Equation","authors":"Hangbin Wu, Han Yue, Jie Han, Songlin Zhang","doi":"10.1061/(ASCE)SU.1943-5428.0000359","DOIUrl":"https://doi.org/10.1061/(ASCE)SU.1943-5428.0000359","url":null,"abstract":"AbstractIndoor high-precision maps are necessary for many applications, including robot navigation and location-based services. Raw indoor map boundaries are too irregular and coarse to be used in ...","PeriodicalId":210864,"journal":{"name":"Journal of Surveying Engineering-asce","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126906906","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}
Pub Date : 2021-11-01DOI: 10.1061/(ASCE)SU.1943-5428.0000370
Lexuan Liu
AbstractA disproportionate number of serious traffic accidents caused by lane offset occur at horizontal curvatures. Widely used methods for vehicle trajectory measurement, such as the vehicle posi...
车道偏移引起的严重交通事故在水平弯道处发生的比例过高。目前广泛应用的车辆轨迹测量方法包括:
{"title":"Lane Offset Survey for One-Lane Horizontal Curvatures Using Binocular Stereo Vision Measurement System","authors":"Lexuan Liu","doi":"10.1061/(ASCE)SU.1943-5428.0000370","DOIUrl":"https://doi.org/10.1061/(ASCE)SU.1943-5428.0000370","url":null,"abstract":"AbstractA disproportionate number of serious traffic accidents caused by lane offset occur at horizontal curvatures. Widely used methods for vehicle trajectory measurement, such as the vehicle posi...","PeriodicalId":210864,"journal":{"name":"Journal of Surveying Engineering-asce","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127047677","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}
Pub Date : 2021-11-01DOI: 10.1061/(ASCE)SU.1943-5428.0000372
L. Tavasci, Enrica Vecchi, S. Gandolfi
AbstractIn the last decade, a number of correction services for global navigation satellite systems (GNSS) precise positioning have been developed, mainly for offshore applications, based on a prec...
摘要在过去的十年中，全球导航卫星系统(GNSS)精确定位的校正服务已经开发出来，主要用于海上应用。
{"title":"Performance of Atlas GNSS Global Correction Service for High-Accuracy Positioning","authors":"L. Tavasci, Enrica Vecchi, S. Gandolfi","doi":"10.1061/(ASCE)SU.1943-5428.0000372","DOIUrl":"https://doi.org/10.1061/(ASCE)SU.1943-5428.0000372","url":null,"abstract":"AbstractIn the last decade, a number of correction services for global navigation satellite systems (GNSS) precise positioning have been developed, mainly for offshore applications, based on a prec...","PeriodicalId":210864,"journal":{"name":"Journal of Surveying Engineering-asce","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130973545","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}
Pub Date : 2021-11-01DOI: 10.1061/(ASCE)SU.1943-5428.0000375
M. Shirazian, M. Bagherbandi, H. Karimi
AbstractMost of the human-made infrastructures (e.g., dams) need very precise geodetic networks and constant monitoring to detect risks of failure and to plan civil engineering maintenance works. T...
{"title":"Network-Aided Reduction of Slope Distances in Small-Scale Geodetic Control Networks","authors":"M. Shirazian, M. Bagherbandi, H. Karimi","doi":"10.1061/(ASCE)SU.1943-5428.0000375","DOIUrl":"https://doi.org/10.1061/(ASCE)SU.1943-5428.0000375","url":null,"abstract":"AbstractMost of the human-made infrastructures (e.g., dams) need very precise geodetic networks and constant monitoring to detect risks of failure and to plan civil engineering maintenance works. T...","PeriodicalId":210864,"journal":{"name":"Journal of Surveying Engineering-asce","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122797379","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}
AbstractWeighted total least-squares (WTLS) adjustment is a rigorous method used for estimating parameters in the errors-in-variables (EIV) model. However, its computational efficiency is limited d...
{"title":"Enhancement of Computational Efficiency for Weighted Total Least Squares","authors":"Jianmin Wang, Wenshuai Yan, Qiong Zhang, Liming Chen","doi":"10.1061/(ASCE)SU.1943-5428.0000373","DOIUrl":"https://doi.org/10.1061/(ASCE)SU.1943-5428.0000373","url":null,"abstract":"AbstractWeighted total least-squares (WTLS) adjustment is a rigorous method used for estimating parameters in the errors-in-variables (EIV) model. However, its computational efficiency is limited d...","PeriodicalId":210864,"journal":{"name":"Journal of Surveying Engineering-asce","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125889293","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}
Pub Date : 2021-11-01DOI: 10.1061/(ASCE)SU.1943-5428.0000369
I. Kang, Jihye Park
AbstractThe progress of a typhoon can be investigated by analyzing the significant changes in precipitable water vapor (PWV) in the area of interest. In this study, PWV variations of two typhoons i...
{"title":"Use of GNSS-Derived PWV for Predicting the Path of Typhoon: Case Studies of Soulik and Kongrey in 2018","authors":"I. Kang, Jihye Park","doi":"10.1061/(ASCE)SU.1943-5428.0000369","DOIUrl":"https://doi.org/10.1061/(ASCE)SU.1943-5428.0000369","url":null,"abstract":"AbstractThe progress of a typhoon can be investigated by analyzing the significant changes in precipitable water vapor (PWV) in the area of interest. In this study, PWV variations of two typhoons i...","PeriodicalId":210864,"journal":{"name":"Journal of Surveying Engineering-asce","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130026426","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}
Pub Date : 2021-11-01DOI: 10.1061/(ASCE)SU.1943-5428.0000363
Leyang Wang, Tao Chen
AbstractThe mixed additive and multiplicative random error model is a combination of the additive error random model and multiplicative random error model. Weakness is an attribute of the mixed add...
摘要加性与乘性混合随机误差模型是加性误差随机模型和乘性随机误差模型的结合。弱点是混合的属性。
{"title":"Virtual Observation Iteration Solution and A-Optimal Design Method for Ill-Posed Mixed Additive and Multiplicative Random Error Model in Geodetic Measurement","authors":"Leyang Wang, Tao Chen","doi":"10.1061/(ASCE)SU.1943-5428.0000363","DOIUrl":"https://doi.org/10.1061/(ASCE)SU.1943-5428.0000363","url":null,"abstract":"AbstractThe mixed additive and multiplicative random error model is a combination of the additive error random model and multiplicative random error model. Weakness is an attribute of the mixed add...","PeriodicalId":210864,"journal":{"name":"Journal of Surveying Engineering-asce","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130489457","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}
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