{"id":"https://openalex.org/W3205490787","doi":null,"title":"The use of empirical models to investigate GPS derived total electron content","display_name":"The use of empirical models to investigate GPS derived total electron content","publication_year":1994,"publication_date":"1994-07-01","ids":{"openalex":"https://openalex.org/W3205490787","mag":"3205490787"},"language":"en","primary_location":{"id":"pmh:hdl:10068/296230","doi":null,"is_oa":false,"landing_page_url":"http://hdl.handle.net/10068/296230","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":"Y - Progress report"},"volume":null,"type":"article","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/A5059158798","display_name":"Seda Karadeniz Kartal","orcid":"https://orcid.org/0000-0003-4756-5490","observed_orcids":["https://orcid.org/0000-0003-4756-5490"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Seda Karadeniz Kartal","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0003-4756-5490","affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5036054951","display_name":"S. M. Radicella","orcid":"https://orcid.org/0000-0002-1907-3715","observed_orcids":["https://orcid.org/0000-0002-1907-3715"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"S. M. Radicella","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-1907-3715","affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5110689735","display_name":"Paolo Spalla","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"P. Spalla","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":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"95","issue":null,"first_page":"26044","last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10159","display_name":"Ionosphere and magnetosphere dynamics","score":0.9951000213623047,"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"}},"topics":[{"id":"https://openalex.org/T10159","display_name":"Ionosphere and magnetosphere dynamics","score":0.9951000213623047,"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/T10655","display_name":"GNSS positioning and interference","score":0.0019000000320374966,"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/T10781","display_name":"Low-Pressure Plasma Processing and Diagnostics","score":0.00019999999494757503,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic 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/total-electron-content","display_name":"total electron content","score":0.925000011920929},{"id":"https://openalex.org/keywords/empirical-model","display_name":"empirical model","score":0.7730000019073486},{"id":"https://openalex.org/keywords/gps-radio-occultation","display_name":"GPS radio occultation","score":0.765999972820282},{"id":"https://openalex.org/keywords/ionosphere","display_name":"ionosphere","score":0.8550000190734863},{"id":"https://openalex.org/keywords/ionospheric-electron-density","display_name":"ionospheric electron density","score":0.7319999933242798}],"concepts":[{"id":"https://openalex.org/C60229501","wikidata":"https://www.wikidata.org/wiki/Q18822","display_name":"Global Positioning System","level":2,"score":0.6420257687568665},{"id":"https://openalex.org/C2778152352","wikidata":"https://www.wikidata.org/wiki/Q5165061","display_name":"Content (measure theory)","level":2,"score":0.518152117729187},{"id":"https://openalex.org/C165391973","wikidata":"https://www.wikidata.org/wiki/Q844304","display_name":"Total electron content","level":4,"score":0.4966445565223694},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.34751570224761963},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3293306231498718},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2986777424812317},{"id":"https://openalex.org/C176379880","wikidata":"https://www.wikidata.org/wiki/Q18031939","display_name":"TEC","level":3,"score":0.16376736760139465},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.15240994095802307},{"id":"https://openalex.org/C116403925","wikidata":"https://www.wikidata.org/wiki/Q162219","display_name":"Ionosphere","level":2,"score":0.12833166122436523},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.07928898930549622},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:hdl:10068/296230","doi":null,"is_oa":false,"landing_page_url":"http://hdl.handle.net/10068/296230","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":"Y - Progress report"},{"id":"mag:3205490787","doi":null,"is_oa":false,"landing_page_url":"http://ui.adsabs.harvard.edu/abs/1994STIN...9526044K/abstract","pdf_url":null,"source":{"id":"https://openalex.org/S4306520500","display_name":"NASA STI/Recon Technical Report N","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"NASA STI/Recon Technical Report N","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/W3205459262","https://openalex.org/W6922552275","https://openalex.org/W3142742577","https://openalex.org/W2360072873","https://openalex.org/W7017483839","https://openalex.org/W7010252110","https://openalex.org/W3024489728","https://openalex.org/W3042917410","https://openalex.org/W3011617831","https://openalex.org/W2240733292"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-11-08T12:12:28.789561","created_date":"2021-10-25T00:00:00"}
