{"id":"https://openalex.org/W2500254241","doi":null,"title":"Improved integrity algorithms for integrated GPS/INS systems in the presence of slowly growing errors","display_name":"Improved integrity algorithms for integrated GPS/INS systems in the presence of slowly growing errors","publication_year":2007,"publication_date":"2007-01-01","ids":{"openalex":"https://openalex.org/W2500254241","mag":"2500254241"},"language":"en","primary_location":{"id":"pmh:hdl:10068/947308","doi":null,"is_oa":false,"landing_page_url":"http://hdl.handle.net/10068/947308","pdf_url":null,"source":{"id":"https://openalex.org/S4377196900","display_name":"OpenGrey (Institut de l'Information Scientifique et Technique)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1295345811","host_organization_name":"Institut de l'Information Scientifique et Technique","host_organization_lineage":["https://openalex.org/I1295345811"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"U - Thesis"},"volume":null,"type":"dissertation","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5077881255","display_name":"Umar Iqbal Bhatti","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Umar Iqbal Bhatti","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5077881255"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":34,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10655","display_name":"GNSS positioning and interference","score":0.5238999724388123,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10655","display_name":"GNSS positioning and interference","score":0.5238999724388123,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11325","display_name":"Inertial Sensor and Navigation","score":0.4287000000476837,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10876","display_name":"Fault Detection and Control Systems","score":0.003000000026077032,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/gps-ins-integration","display_name":"GPS/INS integration","score":0.9549999833106995},{"id":"https://openalex.org/keywords/raim","display_name":"receiver autonomous integrity monitoring","score":0.8190000057220459},{"id":"https://openalex.org/keywords/fault-detection","display_name":"fault detection","score":0.5630000233650208},{"id":"https://openalex.org/keywords/tightly-coupled-integration","display_name":"tightly coupled integration","score":0.824999988079071},{"id":"https://openalex.org/keywords/failure-modes","display_name":"failure modes","score":0.5019999742507935},{"id":"https://openalex.org/keywords/aircraft-navigation","display_name":"aircraft navigation","score":0.5600000023841858},{"id":"https://openalex.org/keywords/safety-critical-navigation","display_name":"safety-critical navigation","score":0.5989999771118164},{"id":"https://openalex.org/keywords/redundant-measurements","display_name":"measurement redundancy","score":0.41100001335144043}],"concepts":[{"id":"https://openalex.org/C60229501","wikidata":"https://www.wikidata.org/wiki/Q18822","display_name":"Global Positioning System","level":2,"score":0.6658359169960022},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.46652254462242126},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4635573625564575},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.13653472065925598}],"mesh":[],"locations_count":3,"locations":[{"id":"pmh:hdl:10068/947308","doi":null,"is_oa":false,"landing_page_url":"http://hdl.handle.net/10068/947308","pdf_url":null,"source":{"id":"https://openalex.org/S4377196900","display_name":"OpenGrey (Institut de l'Information Scientifique et Technique)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1295345811","host_organization_name":"Institut de l'Information Scientifique et Technique","host_organization_lineage":["https://openalex.org/I1295345811"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"U - Thesis"},{"id":"pmh:oai:spiral.imperial.ac.uk:10044/1/7231","doi":null,"is_oa":false,"landing_page_url":"http://hdl.handle.net/10044/1/7231","pdf_url":null,"source":{"id":"https://openalex.org/S4306401396","display_name":"Spiral (Imperial College London)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I47508984","host_organization_name":"Imperial College London","host_organization_lineage":["https://openalex.org/I47508984"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis or dissertation"},{"id":"mag:2500254241","doi":null,"is_oa":false,"landing_page_url":"https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485734","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":144,"referenced_works":["https://openalex.org/W10026053","https://openalex.org/W70660939","https://openalex.org/W93595741","https://openalex.org/W115691594","https://openalex.org/W138886665","https://openalex.org/W428849308","https://openalex.org/W591073852","https://openalex.org/W1486476160","https://openalex.org/W1500564636","https://openalex.org/W1516476911","https://openalex.org/W1530925657","https://openalex.org/W1534318702","https://openalex.org/W1535176033","https://openalex.org/W1543220323","https://openalex.org/W1552379507","https://openalex.org/W1552504052","https://openalex.org/W1556752776","https://openalex.org/W1558470758","https://openalex.org/W1564768010","https://openalex.org/W1567142439","https://openalex.org/W1572164208","https://openalex.org/W1596882522","https://openalex.org/W1631681191","https://openalex.org/W1814110459","https://openalex.org/W1831367443","https://openalex.org/W1835265684","https://openalex.org/W1870255382","https://openalex.org/W1906654153","https://openalex.org/W1964860276","https://openalex.org/W1966173935","https://openalex.org/W1968630765","https://openalex.org/W1970202617","https://openalex.org/W1972974034","https://openalex.org/W1973131250","https://openalex.org/W1975167698","https://openalex.org/W1984123740","https://openalex.org/W1993544930","https://openalex.org/W1994641974","https://openalex.org/W2001964734","https://openalex.org/W2012297333","https://openalex.org/W2012715309","https://openalex.org/W2016352472","https://openalex.org/W2017663304","https://openalex.org/W2020376486","https://openalex.org/W2021455359","https://openalex.org/W2021785659","https://openalex.org/W2022646364","https://openalex.org/W2024373600","https://openalex.org/W2028613386","https://openalex.org/W2030494702","https://openalex.org/W2032930605","https://openalex.org/W2034788618","https://openalex.org/W2036448898","https://openalex.org/W2040885394","https://openalex.org/W2044535354","https://openalex.org/W2044587835","https://openalex.org/W2050165893","https://openalex.org/W2051099670","https://openalex.org/W2051858301","https://openalex.org/W2058160370","https://openalex.org/W2069459553","https://openalex.org/W2088669451","https://openalex.org/W2088943201","https://openalex.org/W2091835715","https://openalex.org/W2097918869","https://openalex.org/W2099444969","https://openalex.org/W2102957192","https://openalex.org/W2105077205","https://openalex.org/W2106565812","https://openalex.org/W2108657112","https://openalex.org/W2110572716","https://openalex.org/W2111186556","https://openalex.org/W2114480005","https://openalex.org/W2114623249","https://openalex.org/W2120044206","https://openalex.org/W2121699695","https://openalex.org/W2123545403","https://openalex.org/W2126061859","https://openalex.org/W2132639726","https://openalex.org/W2137677527","https://openalex.org/W2140244902","https://openalex.org/W2143388911","https://openalex.org/W2147914591","https://openalex.org/W2148506573","https://openalex.org/W2149128480","https://openalex.org/W2151975955","https://openalex.org/W2152244785","https://openalex.org/W2159818132","https://openalex.org/W2162513948","https://openalex.org/W2163614851","https://openalex.org/W2163656867","https://openalex.org/W2165017135","https://openalex.org/W2165258227","https://openalex.org/W2165729006","https://openalex.org/W2168313026","https://openalex.org/W2169040712","https://openalex.org/W2184369012","https://openalex.org/W2206479867","https://openalex.org/W2206538030","https://openalex.org/W2217051063","https://openalex.org/W2227673523","https://openalex.org/W2245532153","https://openalex.org/W2259991587","https://openalex.org/W2267598853","https://openalex.org/W2272090139","https://openalex.org/W2302459565","https://openalex.org/W2323745020","https://openalex.org/W2332242632","https://openalex.org/W2344595774","https://openalex.org/W2491696768","https://openalex.org/W2513261116","https://openalex.org/W2547431849","https://openalex.org/W2566297571","https://openalex.org/W2580410559","https://openalex.org/W2589336450","https://openalex.org/W2589452203","https://openalex.org/W2592165431","https://openalex.org/W2593679722","https://openalex.org/W2595560451","https://openalex.org/W2596123638","https://openalex.org/W2599280382","https://openalex.org/W2605060816","https://openalex.org/W2605444677","https://openalex.org/W2609302356","https://openalex.org/W2612667699","https://openalex.org/W2614900770","https://openalex.org/W2618602273","https://openalex.org/W2618680148","https://openalex.org/W2620832224","https://openalex.org/W2622538903","https://openalex.org/W2624812089","https://openalex.org/W2625958175","https://openalex.org/W2629080544","https://openalex.org/W2676850406","https://openalex.org/W2729975091","https://openalex.org/W2734536171","https://openalex.org/W2990798733","https://openalex.org/W2995136929","https://openalex.org/W3125294261","https://openalex.org/W3148916593","https://openalex.org/W3149286772","https://openalex.org/W3179994548","https://openalex.org/W3198972420","https://openalex.org/W3216580779"],"related_works":["https://openalex.org/W2622538903","https://openalex.org/W1970202617","https://openalex.org/W2040885394","https://openalex.org/W2024308519","https://openalex.org/W2022646364","https://openalex.org/W2143167584","https://openalex.org/W2042752702","https://openalex.org/W2132777342","https://openalex.org/W2112716728","https://openalex.org/W2609424004"],"abstract_inverted_index":{"GPS":[0,223,229,383],"is":[1,12,64,173,196,213,273,278,337,359,397,409],"the":[2,21,50,67,94,119,123,132,135,140,151,156,177,202,216,225,234,240,243,252,287,306,316,325,331,356,364,374,390,394,400,412,425,428,433],"most":[3,68,253],"widely":[4],"used":[5,161,237],"satellite":[6,114],"navigation":[7],"system.":[8],"By":[9],"design,":[10],"there":[11],"no":[13,112],"provision":[14],"for":[15,81,198,233,251,275,346,411],"real":[16,382],"time":[17,272,326,407],"integrity":[18,34,159,245,391],"information":[19],"within":[20],"Standard":[22],"Positioning":[23],"Service":[24],"(SPS).":[25],"However,":[26,118],"in":[27,93,134,324],"safety":[28],"critical":[29],"sectors":[30],"like":[31],"aviation,":[32],"stringent":[33,415],"performance":[35,106,241,392],"requirements":[36],"must":[37],"be":[38,42,92,265],"met.":[39],"This":[40,102,145,277,361],"can":[41,91],"achieved":[43],"using":[44],"special":[45],"augmentation":[46],"systems":[47],"or":[48,60],"at":[49,128,139,300],"user":[51,141],"sensor":[52,142,157],"level":[53,158],"through":[54],"Receiver":[55],"Autonomous":[56],"Integrity":[57],"Monitoring":[58],"(RAIM)":[59],"both.":[61],"RAIM,":[62],"which":[63,347],"considered":[65],"as":[66,355],"cost":[69],"effective":[70],"method":[71,352,362],"relies":[72],"on":[73,188,286],"data":[74],"consistency,":[75],"and":[76,138,155,191,224,230,262,384],"therefore":[77],"requires":[78],"redundant":[79,113],"measurements":[80,115,221,232],"its":[82],"operation.":[83],"An":[84,169],"external":[85],"aid":[86],"to":[87,162,175,218,238,264,329,340,354],"provide":[88],"this":[89,388],"redundancy":[90],"form":[95],"of":[96,125,131,204,208,242,256,271,343,367,393,414,424,427],"an":[97],"Inertial":[98],"Navigation":[99],"system":[100,121,396],"(INS).":[101],"should":[103],"enable":[104],"continued":[105],"even":[107],"during":[108],"RAIM":[109],"holes":[110],"(when":[111],"are":[116,182,236,249,379],"available).":[117],"integrated":[120,148,395],"faces":[122],"risk":[124],"failures":[126,370,403],"generated":[127],"different":[129],"levels":[130],"system,":[133],"operational":[136],"environment":[137],"(receiver)":[143],"level.":[144],"thesis":[146],"addresses":[147],"GPSIINS":[149],"architectures,":[150],"corresponding":[152],"failure":[153,167,179,299],"modes":[154],"algorithms":[160,378],"protect":[163],"users":[164],"from":[165,222],"such":[166],"modes.":[168,180],"exhaustive":[170],"literature":[171],"review":[172],"conducted":[174],"identify":[176],"various":[178],"These":[181],"then":[183,338,422],"grouped":[184],"into":[185],"classes":[186],"based":[187,285],"their":[189],"characteristics":[190],"a":[192,206,209,268,282,297,301,320,348,405],"mathematical":[193],"(failure)":[194],"model":[195],"specified":[197],"each":[199],"class.":[200],"For":[201],"analysis":[203],"failures,":[205],"simulation":[207],"typical":[210,293],"aircraft":[211,235],"trajectory":[212],"developed,":[214],"including":[215,371],"capability":[217,366],"generate":[219],"raw":[220],"INS.":[226,375],"The":[227,335,376],"simulated":[228],"INS":[231,385],"evaluate":[239],"current":[244,317,434],"algorithms.":[246],"Their":[247],"performances":[248],"assessed":[250],"difficult":[254],"case":[255,333,402],"failures;":[257],"slowly":[258,310],"growing":[259,311],"errors":[260,313],"(SGE),":[261],"shown":[263],"inadequate":[266],"(i.e.":[267],"considerable":[269],"period":[270],"required":[274],"detection).":[276],"addressed":[279],"by":[280],"developing":[281],"new":[283,307,349],"algorithm":[284,308,336,431],"detection":[288,342,406],"ofthe":[289],"growth":[290],"rate":[291,429],"ofa":[292],"test":[294],"statistic":[295],"(assuming":[296],"single":[298],"time).":[302],"Results":[303],"show":[304],"that":[305,408],"detects":[309],"ramp-type":[312],"faster":[314],"than":[315],"methods,":[318],"with":[319,381,404],"forty":[321],"percent":[322],"improvement":[323],"it":[327],"takes":[328],"detect":[330],"worst":[332,401],"SGE.":[334],"extended":[339],"include":[341],"multiple":[344],"SGEs":[345],"tightly":[350],"coupled":[351],"referred":[353],"'piggyback":[357],"architecture'":[358],"proposed.":[360],"provides":[363],"novel":[365],"detecting":[368],"all":[369],"those":[372],"affecting":[373],"proposed":[377],"validated":[380],"data.":[386],"In":[387],"way,":[389],"enhanced":[398],"against":[399],"beneficial":[410],"achievement":[413],"time-to-alert":[416],"requirements.":[417],"A":[418],"practical":[419],"implementation":[420],"would":[421],"comprise":[423],"use":[426],"detector":[430],"alongside":[432],"methods.":[435]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":4},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":6},{"year":2014,"cited_by_count":2},{"year":2013,"cited_by_count":3},{"year":2012,"cited_by_count":2}],"updated_date":"2026-11-03T10:50:19.383937","created_date":"2016-08-23T00:00:00"}
