{"id":"https://openalex.org/W56864035","doi":null,"title":"Study on NAVSAT system evaluation, final report on phase 2. Part 1. Study results","display_name":"Study on NAVSAT system evaluation, final report on phase 2. Part 1. Study results","publication_year":1987,"publication_date":"1987-04-28","ids":{"openalex":"https://openalex.org/W56864035","mag":"56864035"},"language":"en","primary_location":{"id":"mag:56864035","doi":null,"is_oa":false,"landing_page_url":"https://repository.tudelft.nl/islandora/object/uuid%3A8b90da5c-bb54-422d-b58a-17566aa8f1ba","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},"volume":null,"type":"article","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/A5081138716","display_name":"G.J. Dekker","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"G.J. Dekker","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":null,"display_name":"H. de Jong","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"H. de Jong","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5046196968","display_name":"G. Moek","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"G. Moek","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.01240695,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"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":0.9990000128746033,"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":0.9990000128746033,"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":0.0003000000142492354,"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":9.999999747378752e-05,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/satellite-navigation","display_name":"satellite navigation","score":0.878000020980835},{"id":"https://openalex.org/keywords/ionospheric-effects","display_name":"ionospheric effects","score":0.6700000166893005},{"id":"https://openalex.org/keywords/ionospheric-modeling","display_name":"ionospheric modeling","score":0.6399999856948853},{"id":"https://openalex.org/keywords/positioning-error","display_name":"positioning error","score":0.5550000071525574},{"id":"https://openalex.org/keywords/system-design-evaluation","display_name":"system design evaluation","score":0.47999998927116394}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6866222620010376},{"id":"https://openalex.org/C198082294","wikidata":"https://www.wikidata.org/wiki/Q3399648","display_name":"Position (finance)","level":2,"score":0.5794749855995178},{"id":"https://openalex.org/C70388272","wikidata":"https://www.wikidata.org/wiki/Q5968558","display_name":"IBM","level":2,"score":0.5642918944358826},{"id":"https://openalex.org/C88626702","wikidata":"https://www.wikidata.org/wiki/Q1128903","display_name":"Continuation","level":2,"score":0.5382840633392334},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.5282511115074158},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.4422784447669983},{"id":"https://openalex.org/C44280652","wikidata":"https://www.wikidata.org/wiki/Q104837","display_name":"Phase (matter)","level":2,"score":0.4341103136539459},{"id":"https://openalex.org/C44154836","wikidata":"https://www.wikidata.org/wiki/Q45045","display_name":"Simulation","level":1,"score":0.39781731367111206},{"id":"https://openalex.org/C13736549","wikidata":"https://www.wikidata.org/wiki/Q4489420","display_name":"Industrial engineering","level":1,"score":0.3755953311920166},{"id":"https://openalex.org/C201995342","wikidata":"https://www.wikidata.org/wiki/Q682496","display_name":"Systems engineering","level":1,"score":0.36069485545158386},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3426784873008728},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.21689802408218384},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.18969577550888062},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.17359116673469543},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.0},{"id":"https://openalex.org/C171250308","wikidata":"https://www.wikidata.org/wiki/Q11468","display_name":"Nanotechnology","level":1,"score":0.0},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C10138342","wikidata":"https://www.wikidata.org/wiki/Q43015","display_name":"Finance","level":1,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:56864035","doi":null,"is_oa":false,"landing_page_url":"https://repository.tudelft.nl/islandora/object/uuid%3A8b90da5c-bb54-422d-b58a-17566aa8f1ba","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":0,"referenced_works":[],"related_works":["https://openalex.org/W642740851","https://openalex.org/W589204613","https://openalex.org/W1981227988","https://openalex.org/W2144413189","https://openalex.org/W2055167315","https://openalex.org/W1992323383","https://openalex.org/W7061158773","https://openalex.org/W160847422","https://openalex.org/W2943115755","https://openalex.org/W187472578"],"abstract_inverted_index":{"Under":[0],"contract":[1,151],"to":[2,60,91,193],"ESA,":[3],"NLR":[4],"has":[5,79],"developed":[6,46],"a":[7,14,33,40,50,109,133,154,159],"flexible":[8],"simulation":[9,17,93,187],"package,":[10],"named":[11],"PROMISE,":[12],"and":[13,47,49,115,129],"set":[15],"of":[16,19,42,52,68,98,108,132,162,170,181,197],"models":[18,94,118],"the":[20,61,66,69,73,77,92,96,106,113,116,121,126,130,145,173,186,195,198],"ESA":[21],"proposed":[22],"NAVSAT":[23,122,146,200],"satellite-based":[24],"navigation":[25,156],"system.":[26],"These":[27],"were":[28],"completed":[29],"in":[30,37,149],"1984.":[31],"In":[32,75,168],"continuation":[34],"contract,":[35],"described":[36],"this":[38,150],"report,":[39],"number":[41,51,180],"extensions":[43,59,90,104],"have":[44,55],"been":[45,56,80],"implemented,":[48],"detailed":[53],"simulations":[54,141],"performed.":[57],"The":[58,89,101,140],"PROMISE":[62],"package":[63,78],"mainly":[64],"concern":[65,95],"enhancement":[67],"user":[70,136],"interaction":[71],"with":[72,158],"package.":[74],"addition,":[76],"installed":[81],"on":[82],"an":[83],"IBM":[84],"4381":[85],"computer":[86],"at":[87],"ESTEC.":[88],"improvement":[97],"their":[99],"realism.":[100],"most":[102,169],"important":[103],"are":[105],"implementation":[107,131],"realistic":[110],"model":[111],"for":[112],"ionosphere":[114],"various":[117],"used":[119,192],"within":[120],"system,":[123],"which":[124],"estimate":[125],"ionospheric":[127],"effects,":[128],"more":[134],"sophisticated":[135],"position":[137,160],"estimation":[138],"algorithm.":[139],"performed":[142],"indicate":[143],"that":[144,189],"concept":[147],"studied":[148,172],"can":[152,190],"provide":[153],"worldwide":[155],"facility":[157],"error":[161,174],"about":[163],"5":[164],"-":[165],"25":[166],"m.":[167,178],"cases":[171],"was":[175],"below":[176],"10":[177],"A":[179],"conclusions":[182],"is":[183,204],"drawn":[184],"from":[185],"results":[188],"be":[191],"improve":[194],"design":[196],"final":[199],"system":[201],"as":[202],"it":[203],"currently":[205],"being":[206],"defined.":[207]},"counts_by_year":[],"updated_date":"2026-09-29T14:09:16.559479","created_date":"2016-06-24T00:00:00"}
