2010
DOI: 10.1007/978-3-642-12654-3_3
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Indoor Positioning Using GPS Revisited

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Cited by 116 publications
(57 citation statements)
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“…The latter can be achieved since identifying current impairment sources can inform the receiver which satellites' ranging data to trust: GPS receivers can ignore ranging information from individual satellites which are believed to be distorted or currently received only indirectly; while such selection has been shown to potentially improve GPS accuracy [11], knowing the current user environment is crucial for picking proper selection criteria: E.g., in open sky environments stronger signals usually provide preciser ranging information, whereas in indoor environments the contrary can hold, when the strongest signals are likely to be signal reflections, reaching the user through windows, but only indirectly and thus yielding large ranging distortations [8]. Furthermore, providing application developers with access to the classifications is an example of benefitial seamfull design for developers [14]: E.g., in a positioning middleware, which is designed following a seamfull design approach to provide translucency w.r.t.…”
Section: Discussionmentioning
confidence: 99%
See 2 more Smart Citations
“…The latter can be achieved since identifying current impairment sources can inform the receiver which satellites' ranging data to trust: GPS receivers can ignore ranging information from individual satellites which are believed to be distorted or currently received only indirectly; while such selection has been shown to potentially improve GPS accuracy [11], knowing the current user environment is crucial for picking proper selection criteria: E.g., in open sky environments stronger signals usually provide preciser ranging information, whereas in indoor environments the contrary can hold, when the strongest signals are likely to be signal reflections, reaching the user through windows, but only indirectly and thus yielding large ranging distortations [8]. Furthermore, providing application developers with access to the classifications is an example of benefitial seamfull design for developers [14]: E.g., in a positioning middleware, which is designed following a seamfull design approach to provide translucency w.r.t.…”
Section: Discussionmentioning
confidence: 99%
“…Low signal-to-noise ratios and multipath handicap both acquiring and tracking GPS signals and usually result in less reliable positioning due to less suitable satellite geometry and less accurate individual time shifts measurements. For investigations of GPS positioning in urban and indoor environments and its limitations, see, e.g., [8,22,27]. High-Sensitivity GPS (HSGPS) [12] subsumes advances in GPS receiver technology to alleviate the limitations mentioned above.…”
Section: Environment Impacts On Gps Performancementioning
confidence: 99%
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“…For outdoor navigation it is commonplace to rely on GPS for positioning, while for navigating indoors we cannot trust GPS alone due to fading and reflected satellite signals [16]. Thus we need to supplement with other kinds of positioning such as WiFi-based positioning, dead reckoning, and RFID based positioning.…”
Section: Challenges Inherent In Indoor Pedestrian Navigationmentioning
confidence: 99%
“…GPS is not reliably available in indoor settings however, where direct signals from satellites are attenuated, refracted, and reflected by building infrastructure [9]. GPS as a data source is popular within TMD, see .e.g.…”
Section: Available Sensing Technologiesmentioning
confidence: 99%