Pub Date : 2020-12-15DOI: 10.1002/9781119458555.ch38
Z. Kassas
{"title":"Navigation with Cellular Signals of Opportunity","authors":"Z. Kassas","doi":"10.1002/9781119458555.ch38","DOIUrl":"https://doi.org/10.1002/9781119458555.ch38","url":null,"abstract":"","PeriodicalId":265266,"journal":{"name":"Position, Navigation, and Timing Technologies in the 21st Century","volume":"172 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133296998","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 : 2020-12-15DOI: 10.1002/9781119458555.ch55
N. El-Sheimy, Z. Lari
{"title":"GNSS Applications in Surveying and Mobile Mapping","authors":"N. El-Sheimy, Z. Lari","doi":"10.1002/9781119458555.ch55","DOIUrl":"https://doi.org/10.1002/9781119458555.ch55","url":null,"abstract":"","PeriodicalId":265266,"journal":{"name":"Position, Navigation, and Timing Technologies in the 21st Century","volume":"152 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116446868","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 : 2020-12-15DOI: 10.1002/9781119458449.ch22
G. McGraw, P. Groves, B. Ashman
GNSS signals can be blocked and reflected by nearby objects, such as buildings, walls, and vehicles. They can also be reflected by the ground and by water. These effects are the dominant source of GNSS positioning errors in dense urban environments, though they can have an impact almost anywhere. Nonline-of-sight (NLOS) reception occurs when the direct path from the transmitter to the receiver is blocked and signals are received only via a reflected path. Multipath interference occurs, as the name suggests, when a signal is received via multiple paths. This can be via the direct path and one or more reflected paths, or it can be via multiple reflected paths. Figure 1 illustrates this. Within the GNSS community, it is commonplace to classify NLOS reception as multipath. However, the two effects are not the same; their error characteristics are quite different. As a reflected path is always longer than the direct path, NLOS reception always results in a positive ranging error that is independent of the signal and receiver design. By contrast, the coherent nature of multipath interference can produce both positive and negative ranging errors and these vary with the signal and receiver designs [1].
{"title":"Robust Positioning in the Presence of Multipath and NLOS GNSS Signals","authors":"G. McGraw, P. Groves, B. Ashman","doi":"10.1002/9781119458449.ch22","DOIUrl":"https://doi.org/10.1002/9781119458449.ch22","url":null,"abstract":"GNSS signals can be blocked and reflected by nearby objects, such as buildings, walls, and vehicles. They can also be reflected by the ground and by water. These effects are the dominant source of GNSS positioning errors in dense urban environments, though they can have an impact almost anywhere. Nonline-of-sight (NLOS) reception occurs when the direct path from the transmitter to the receiver is blocked and signals are received only via a reflected path. Multipath interference occurs, as the name suggests, when a signal is received via multiple paths. This can be via the direct path and one or more reflected paths, or it can be via multiple reflected paths. Figure 1 illustrates this. Within the GNSS community, it is commonplace to classify NLOS reception as multipath. However, the two effects are not the same; their error characteristics are quite different. As a reflected path is always longer than the direct path, NLOS reception always results in a positive ranging error that is independent of the signal and receiver design. By contrast, the coherent nature of multipath interference can produce both positive and negative ranging errors and these vary with the signal and receiver designs [1].","PeriodicalId":265266,"journal":{"name":"Position, Navigation, and Timing Technologies in the 21st Century","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122149631","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 : 2020-12-15DOI: 10.1002/9781119458555.ch51
Charles Toth, Zoltán Koppányi
{"title":"Digital Photogrammetry","authors":"Charles Toth, Zoltán Koppányi","doi":"10.1002/9781119458555.ch51","DOIUrl":"https://doi.org/10.1002/9781119458555.ch51","url":null,"abstract":"","PeriodicalId":265266,"journal":{"name":"Position, Navigation, and Timing Technologies in the 21st Century","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123436704","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 : 2020-12-15DOI: 10.1002/9781119458555.ch64
T. Reid, T. Walter, R. Guinness, S. Thombre, H. Kuusniemi, N. Kjerstad
{"title":"Navigation in the Arctic","authors":"T. Reid, T. Walter, R. Guinness, S. Thombre, H. Kuusniemi, N. Kjerstad","doi":"10.1002/9781119458555.ch64","DOIUrl":"https://doi.org/10.1002/9781119458555.ch64","url":null,"abstract":"","PeriodicalId":265266,"journal":{"name":"Position, Navigation, and Timing Technologies in the 21st Century","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132162039","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 : 2020-12-15DOI: 10.1007/978-3-319-42928-1_9
J. A. Rodríguez, J. Hahn, Miguel Manteiga Bautista, E. Chatre
{"title":"GALILEO","authors":"J. A. Rodríguez, J. Hahn, Miguel Manteiga Bautista, E. Chatre","doi":"10.1007/978-3-319-42928-1_9","DOIUrl":"https://doi.org/10.1007/978-3-319-42928-1_9","url":null,"abstract":"","PeriodicalId":265266,"journal":{"name":"Position, Navigation, and Timing Technologies in the 21st Century","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129971571","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 : 2020-12-15DOI: 10.1002/9781119458449.ch32
P. Vergados, A. Komjathy, X. Meng
{"title":"GNSS Observation for Detection, Monitoring, and Forecasting Natural and Man‐Made Hazardous Events","authors":"P. Vergados, A. Komjathy, X. Meng","doi":"10.1002/9781119458449.ch32","DOIUrl":"https://doi.org/10.1002/9781119458449.ch32","url":null,"abstract":"","PeriodicalId":265266,"journal":{"name":"Position, Navigation, and Timing Technologies in the 21st Century","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126305915","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 : 2020-12-15DOI: 10.1002/9781119458449.ch30
H. Brenot
{"title":"GNSS for Neutral Atmosphere and Severe Weather Monitoring","authors":"H. Brenot","doi":"10.1002/9781119458449.ch30","DOIUrl":"https://doi.org/10.1002/9781119458449.ch30","url":null,"abstract":"","PeriodicalId":265266,"journal":{"name":"Position, Navigation, and Timing Technologies in the 21st Century","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126587849","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 : 2020-12-15DOI: 10.1002/9781119458449.ch10
F. Graas, S. Ugazio
This chapter begins with an explanation of the importance of signal quality monitoring (SQM) of global navigation satellite system, (GNSS) followed by a description of SQM requirements, and an overview of current monitoring systems. Next, SQM algorithms and methods are summarized for six parameters: signal power, cross‐correlation, cycle slip, excessive acceleration, code‐carrier divergence, and signal deformation. SQM is a subset of signal monitoring that specifically deals with the assessment of carrier waveform and code performance to ensure that they are within designated limits. The Civil Monitoring Performance Specification provides a section with clarifications and algorithms that provides insight into incomplete SQM requirements including verification of absolute power delivered by each satellite and response time, received carrier‐to‐noise ratio, code‐carrier divergence, signal distortion, carrier phase discontinuities, and bit inversions. Challenges remain for many aspects of GNSS SQM, including algorithm design and implementation for monitoring and assessment.
{"title":"GNSS Signal Quality Monitoring","authors":"F. Graas, S. Ugazio","doi":"10.1002/9781119458449.ch10","DOIUrl":"https://doi.org/10.1002/9781119458449.ch10","url":null,"abstract":"This chapter begins with an explanation of the importance of signal quality monitoring (SQM) of global navigation satellite system, (GNSS) followed by a description of SQM requirements, and an overview of current monitoring systems. Next, SQM algorithms and methods are summarized for six parameters: signal power, cross‐correlation, cycle slip, excessive acceleration, code‐carrier divergence, and signal deformation. SQM is a subset of signal monitoring that specifically deals with the assessment of carrier waveform and code performance to ensure that they are within designated limits. The Civil Monitoring Performance Specification provides a section with clarifications and algorithms that provides insight into incomplete SQM requirements including verification of absolute power delivered by each satellite and response time, received carrier‐to‐noise ratio, code‐carrier divergence, signal distortion, carrier phase discontinuities, and bit inversions. Challenges remain for many aspects of GNSS SQM, including algorithm design and implementation for monitoring and assessment.","PeriodicalId":265266,"journal":{"name":"Position, Navigation, and Timing Technologies in the 21st Century","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126824758","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 : 2020-02-04DOI: 10.1007/978-3-319-42928-1_28
J. Farrell, J. Wendel
{"title":"GNSS‐INS Integration","authors":"J. Farrell, J. Wendel","doi":"10.1007/978-3-319-42928-1_28","DOIUrl":"https://doi.org/10.1007/978-3-319-42928-1_28","url":null,"abstract":"","PeriodicalId":265266,"journal":{"name":"Position, Navigation, and Timing Technologies in the 21st Century","volume":"38 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120891323","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：