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TitleCharacterization of apparent GPS ionospheric delay gradients over Canada
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AuthorGhoddousi-Fard, R
SourceGeomatics Canada, Open File 42, 2018, 11 pages, https://doi.org/10.4095/308444
Year2018
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
File formatpdf
ProvinceCanada; British Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut
NTS1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65; 66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560
Lat/Long WENS-141.0000 -50.0000 90.0000 41.7500
Subjectsgeophysics; ionosphere; satellites; models; correlations; geomagnetism; mapping techniques; ionospheric delays; ionospheric gradients; global positioning systems; global navigation satellite systems; Precise Point Positioning; vertical total electron content; ionospheric pierce points
Illustrationsgeoscientific sketch maps; graphs; tables
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Location
 
Natural Resources Canada Library - Ottawa (Earth Sciences)
 
ProgramCanadian Spatial Reference System, Geodetic Survey
Released2018 07 17
AbstractDifferential GNSS augmentation systems require reliable knowledge of spatial and temporal variations of ionospheric effects on GNSS measurements. In addition, recent developments in Precise Point Positioning observation models can benefit from ionospheric constraints from nearby stations. This requires an understating of ionospheric delay spatial de-correlation under different ionospheric conditions.
In this study vertical ionospheric delays estimated from GPS stations in Canada and adjacent regions are employed for studying spatial and temporal ionospheric gradients during periods of quiet and disturbed ionospheric conditions. Ionospheric delay differences at each pair of ionospheric pierce points from different stations and satellites are used to characterize apparent spatial ionospheric gradients over the studied region. Temporal variations were also studied by differencing vertical ionospheric delays from the same satellite and station over specified periods.
Summary(Plain Language Summary, not published)
Differential GNSS augmentation systems require reliable knowledge of spatial and temporal variations of ionospheric effects on GNSS measurements. In addition, recent developments in Precise Point Positioning observation models can benefit from ionospheric constraints from nearby stations. This requires an understating of ionospheric delay spatial de-correlation under different ionospheric conditions. In this study vertical ionospheric delays estimated from GPS stations in Canada and adjacent regions are employed for studying spatial and temporal ionospheric gradients during periods of quiet and disturbed ionospheric conditions. Ionospheric delay differences at each pair of ionospheric pierce points from different stations and satellites are used to characterize apparent spatial ionospheric gradients over the studied region. Temporal variations were also studied by differencing vertical ionospheric delays from the same satellite and station over specified periods.
GEOSCAN ID308444