{"id":"https://openalex.org/W899242264","doi":"https://doi.org/10.9790/2834-09636679","title":"Estimation Of Global Positioning System Measurement Errors For GAGAN Applications","display_name":"Estimation Of Global Positioning System Measurement Errors For GAGAN Applications","publication_year":2014,"publication_date":"2014-01-01","ids":{"openalex":"https://openalex.org/W899242264","doi":"https://doi.org/10.9790/2834-09636679","mag":"899242264"},"language":"en","primary_location":{"id":"doi:10.9790/2834-09636679","doi":"https://doi.org/10.9790/2834-09636679","is_oa":true,"landing_page_url":"https://doi.org/10.9790/2834-09636679","pdf_url":"https://doi.org/10.9790/2834-09636679","source":{"id":"https://openalex.org/S2764610365","display_name":"IOSR Journal of Electronics and Communication Engineering","issn_l":"2278-2834","issn":["2278-2834","2278-8735"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4323237861","host_organization_name":"International organization of Scientific Research (IOSR)","host_organization_lineage":["https://openalex.org/P4323237861"],"host_organization_lineage_names":["International organization of Scientific Research (IOSR)"],"type":"journal"},"license":"public-domain","license_id":"https://openalex.org/licenses/public-domain","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IOSR Journal of Electronics and Communication Engineering","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://doi.org/10.9790/2834-09636679","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":null,"display_name":"M.A. Khadar Baba","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"M.A. Khadar Baba","raw_affiliation_strings":["Department of ECE, C.M.R.College of.Engineering &.Technology., Hyderabad, T.S., India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of ECE, C.M.R.College of.Engineering &.Technology., Hyderabad, T.S., India","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5071231192","display_name":"Veera Malleswara Rao","orcid":"https://orcid.org/0009-0006-3559-7996","observed_orcids":["https://orcid.org/0009-0006-3559-7996"]},"institutions":[{"id":"https://openalex.org/I4210163359","display_name":"Ministry of Health and Care Services","ror":"https://ror.org/05ykb3m36","country_code":"NO","type":"government","lineage":["https://openalex.org/I4210149801","https://openalex.org/I4210163359"]},{"id":"https://openalex.org/I885392262","display_name":"GITAM University","ror":"https://ror.org/0440p1d37","country_code":"IN","type":"education","lineage":["https://openalex.org/I885392262"]}],"countries":["IN","NO"],"is_corresponding":false,"raw_author_name":"Dr. V. Malleswara Rao","raw_affiliation_strings":["Department of ECE , GITAM UNIVERSITY , Visakhapatnam , A.P , India","Prof.& HOD ,","Prof.& HOD , Department of ECE, GITAM UNIVERSITY ,Visakhapatnam ,A.P, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of ECE , GITAM UNIVERSITY , Visakhapatnam , A.P , India","institution_ids":["https://openalex.org/I885392262"]},{"raw_affiliation_string":"Prof.& HOD ,","institution_ids":["https://openalex.org/I4210163359"]},{"raw_affiliation_string":"Prof.& HOD , Department of ECE, GITAM UNIVERSITY ,Visakhapatnam ,A.P, India","institution_ids":["https://openalex.org/I885392262"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":true,"cited_by_count":3,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":87,"max":93},"biblio":{"volume":"9","issue":"6","first_page":"66","last_page":"79"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10655","display_name":"GNSS positioning and interference","score":1.0,"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":1.0,"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/T10159","display_name":"Ionosphere and magnetosphere dynamics","score":0.0,"subfield":{"id":"https://openalex.org/subfields/1912","display_name":"Space and Planetary Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13487","display_name":"Statistical and numerical algorithms","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2604","display_name":"Applied Mathematics"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/gps-measurement-error","display_name":"GPS measurement error","score":0.9459999799728394},{"id":"https://openalex.org/keywords/gagan","display_name":"GAGAN","score":0.9729999899864197},{"id":"https://openalex.org/keywords/gps-augmentation","display_name":"GPS augmentation","score":0.46000000834465027},{"id":"https://openalex.org/keywords/ionospheric-delay","display_name":"ionospheric delay","score":0.8659999966621399},{"id":"https://openalex.org/keywords/total-electron-content","display_name":"total electron content","score":0.8619999885559082},{"id":"https://openalex.org/keywords/extended-kalman-filter","display_name":"extended Kalman filter","score":0.8569999933242798},{"id":"https://openalex.org/keywords/multipath-propagation","display_name":"multipath propagation","score":0.7099999785423279},{"id":"https://openalex.org/keywords/pseudorange","display_name":"pseudorange","score":0.5640000104904175},{"id":"https://openalex.org/keywords/aircraft-navigation","display_name":"aircraft navigation","score":0.8840000033378601},{"id":"https://openalex.org/keywords/rinex-data","display_name":"RINEX data","score":0.6309999823570251}],"concepts":[{"id":"https://openalex.org/C60229501","wikidata":"https://www.wikidata.org/wiki/Q18822","display_name":"Global Positioning System","level":2,"score":0.837978184223175},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7314130067825317},{"id":"https://openalex.org/C161218011","wikidata":"https://www.wikidata.org/wiki/Q11827794","display_name":"Multipath propagation","level":3,"score":0.5772987008094788},{"id":"https://openalex.org/C174201072","wikidata":"https://www.wikidata.org/wiki/Q1187347","display_name":"Pseudorange","level":4,"score":0.5079761147499084},{"id":"https://openalex.org/C193648706","wikidata":"https://www.wikidata.org/wiki/Q7805485","display_name":"Time to first fix","level":5,"score":0.4650861620903015},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.45602697134017944},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.45258742570877075},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.4463019371032715},{"id":"https://openalex.org/C12957241","wikidata":"https://www.wikidata.org/wiki/Q15903792","display_name":"GPS signals","level":4,"score":0.42568355798721313},{"id":"https://openalex.org/C157286648","wikidata":"https://www.wikidata.org/wiki/Q846780","display_name":"Kalman filter","level":2,"score":0.42047062516212463},{"id":"https://openalex.org/C64828349","wikidata":"https://www.wikidata.org/wiki/Q120200","display_name":"Ephemeris","level":3,"score":0.41930240392684937},{"id":"https://openalex.org/C14279187","wikidata":"https://www.wikidata.org/wiki/Q5514012","display_name":"GNSS applications","level":3,"score":0.40015655755996704},{"id":"https://openalex.org/C198613851","wikidata":"https://www.wikidata.org/wiki/Q432394","display_name":"Assisted GPS","level":3,"score":0.36953479051589966},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.344299852848053},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.1960468590259552},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.1515577733516693},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.09717968106269836},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.0},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.9790/2834-09636679","doi":"https://doi.org/10.9790/2834-09636679","is_oa":true,"landing_page_url":"https://doi.org/10.9790/2834-09636679","pdf_url":"https://doi.org/10.9790/2834-09636679","source":{"id":"https://openalex.org/S2764610365","display_name":"IOSR Journal of Electronics and Communication Engineering","issn_l":"2278-2834","issn":["2278-2834","2278-8735"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4323237861","host_organization_name":"International organization of Scientific Research (IOSR)","host_organization_lineage":["https://openalex.org/P4323237861"],"host_organization_lineage_names":["International organization of Scientific Research (IOSR)"],"type":"journal"},"license":"public-domain","license_id":"https://openalex.org/licenses/public-domain","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IOSR Journal of Electronics and Communication Engineering","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.9790/2834-09636679","doi":"https://doi.org/10.9790/2834-09636679","is_oa":true,"landing_page_url":"https://doi.org/10.9790/2834-09636679","pdf_url":"https://doi.org/10.9790/2834-09636679","source":{"id":"https://openalex.org/S2764610365","display_name":"IOSR Journal of Electronics and Communication Engineering","issn_l":"2278-2834","issn":["2278-2834","2278-8735"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4323237861","host_organization_name":"International organization of Scientific Research (IOSR)","host_organization_lineage":["https://openalex.org/P4323237861"],"host_organization_lineage_names":["International organization of Scientific Research (IOSR)"],"type":"journal"},"license":"public-domain","license_id":"https://openalex.org/licenses/public-domain","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IOSR Journal of Electronics and Communication Engineering","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W899242264.pdf","grobid_xml":"https://content.openalex.org/works/W899242264.grobid-xml"},"referenced_works_count":19,"referenced_works":["https://openalex.org/W70847328","https://openalex.org/W1479928838","https://openalex.org/W1531218787","https://openalex.org/W1558470758","https://openalex.org/W1633983593","https://openalex.org/W1717289128","https://openalex.org/W1896572192","https://openalex.org/W1979154650","https://openalex.org/W2038166203","https://openalex.org/W2076065673","https://openalex.org/W2094558910","https://openalex.org/W2123487311","https://openalex.org/W2132639726","https://openalex.org/W2244457018","https://openalex.org/W2323174760","https://openalex.org/W2491361392","https://openalex.org/W2527078035","https://openalex.org/W2528877356","https://openalex.org/W4285719527"],"related_works":["https://openalex.org/W1896572192","https://openalex.org/W2083232510","https://openalex.org/W2277662629","https://openalex.org/W7099047398","https://openalex.org/W2185306678","https://openalex.org/W7095510572","https://openalex.org/W2323174760","https://openalex.org/W2080748393","https://openalex.org/W2755373497","https://openalex.org/W2528877356"],"abstract_inverted_index":{"The":[0],"Global":[1,209],"Positioning":[2,210],"System":[3,211],"(GPS)":[4,212],"has":[5,344],"been":[6],"in":[7,17,77,93,221,250,296,318,341,356],"use":[8],"for":[9,171,267,287,384,397],"providing":[10],"positioning,":[11],"navigation":[12,271,290,303,328,358,389],"and":[13,39,54,60,116,137,197,226,231,278,300,312,336,362],"timing":[14],"(PNT)":[15],"services":[16],"many":[18],"parts":[19],"of":[20,31,57,141,164,167,182,261,283,314,348,351,367,393],"the":[21,28,58,78,97,105,114,124,127,135,142,160,165,174,183,198,208,217,223,227,255,284,289,308,327,332,364,368,394],"world.There":[22],"are":[23,35,73,111,214,248,273,316],"several":[24],"errors":[25,47,72,196],"that":[26,306],"affect":[27],"positional":[29,180,365],"accuracy":[30,176,181,366],"GPS.Prominent":[32],"among":[33],"them":[34],"ephemeris":[36],"errors,":[37,42,44,98,173],"satellite":[38,59,115,136,199,334,352],"receiver":[40,90,117,138,285],"clock":[41],"multipath":[43],"signal":[45],"propagation":[46],"such":[48],"as":[49,123],"ionospheric":[50,99,204],"delay,":[51,53],"tropospheric":[52],"instrumental":[55,118,120,143,218,229],"biases":[56,121,144,219],"receiver.In":[61],"this":[62,94,251,253,319,370],"paper,":[63],"prominent":[64],"estimation":[65,140,175],"techniques":[66],"to":[67,103,158],"characterize":[68],"various":[69,172],"GPS":[70,75,89,129,184,224,342,385],"measurement":[71],"reviewed.The":[74],"data":[76],"Receiver":[79],"INdependent":[80],"EXchange":[81],"(RINEX)":[82],"format":[83],"obtained":[84,156,242],"from":[85,207],"a":[86,346,372],"Dual":[87],"frequency":[88],"is":[91,101,149,163,177,191,258,293,382,400],"used":[92],"analysis.Among":[95],"all":[96,159,297],"delay":[100,109],"found":[102],"be":[104],"most":[106],"dominant.However,":[107],"these":[108],"measurements":[110,205,338],"affected":[112],"by":[113,216],"biases.The":[119],"exist":[122],"signals":[125],"at":[126],"two":[128],"frequencies":[130],"experience":[131],"different":[132],"delays":[133],"inside":[134],"hardware.For":[139],"Extended":[145],"Kalman":[146,245],"filter(EKF)":[147],"technique":[148,247],"adopted.The":[150],"user":[151],"equivalent":[152],"range":[153],"error":[154,161,264],"(UERE)":[155],"due":[157],"sources":[162],"order":[166],"few":[168],"metres.After":[169],"accounting":[170],"significantly":[178],"improved.The":[179],"Aided":[185],"GEO":[186],"Augmented":[187],"Navigation":[188],"(GAGAN)":[189,390],"system":[190,343,355],"basically":[192],"dependent":[193],"on":[194,275,331],"ranging":[195],"constellation":[200],"geometry":[201],"[1].The":[202],"lineof-sight":[203],"derived":[206],"observables":[213],"corrupted":[215],"present":[220],"both":[222],"satellites":[225],"receivers.The":[228],"bias":[230],"Total":[232],"Electron":[233],"Content":[234],"(TEC)":[235],"results":[236],"(Hyderabad":[237],"GAGAN":[238,361],"station":[239],"(78.47\u00b0E,":[240],"17.45\u00b0N))":[241],"using":[243,379],"theExtended":[244],"filter":[246],"presented":[249],"paper.In":[252],"work":[254],"main":[256],"focus":[257],"towards":[259],"development":[260],"an":[262,280],"improved":[263],"free":[265],"approach":[266,324,374,396],"aircraft":[268,357],"navigation.The":[269],"existing":[270],"solutions":[272],"based":[274,330,353],"iterative":[276],"algorithms":[277,305],"require":[279],"initial":[281],"estimate":[282],"position":[286],"computing":[288],"solution":[291,304,323,329],"which":[292],"not":[294],"possible":[295],"conditions.Accurate,":[298],"reliable":[299],"cost":[301],"effective":[302],"suit":[307],"Indian":[309],"geographic":[310],"area":[311,313],"application":[315],"proposed":[317,383,395],"work.A":[320],"non-iterative":[321],"point":[322],"algorithm":[325],"computes":[326],"available":[333],"positions":[335],"pseudorange":[337],"[3].The":[339],"improvement":[340],"given":[345],"feasibility":[347],"automated":[349],"operation":[350],"augmenting":[354],"can":[359],"augment":[360],"improves":[363],"user.In":[369],"paper":[371],"communication":[373],",":[375],"high,":[376],"accurate":[377],"processing":[378],"EKF":[380],"scheme":[381],"aided":[386],"geo":[387],"augmented":[388],"application.The":[391],"effectiveness":[392],"higher":[398],"performance":[399],"evaluated":[401],"under":[402],"variable":[403],"conditions.":[404]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2018,"cited_by_count":1}],"updated_date":"2026-10-30T12:39:25.321706","created_date":"2016-06-24T00:00:00"}