{"id":"https://openalex.org/W2989705186","doi":"https://doi.org/10.3390/rs11232735","title":"Precise Orbit Determination of BDS-2 and BDS-3 Using SLR","display_name":"Precise Orbit Determination of BDS-2 and BDS-3 Using SLR","publication_year":2019,"publication_date":"2019-11-21","ids":{"openalex":"https://openalex.org/W2989705186","doi":"https://doi.org/10.3390/rs11232735","mag":"2989705186"},"language":"en","primary_location":{"id":"doi:10.3390/rs11232735","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs11232735","pdf_url":"https://www.mdpi.com/2072-4292/11/23/2735/pdf?version=1574332411","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2072-4292/11/23/2735/pdf?version=1574332411","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5026294876","display_name":"Honglei Yang","orcid":"https://orcid.org/0000-0002-2093-4295"},"institutions":[{"id":"https://openalex.org/I154099455","display_name":"Shandong University","ror":"https://ror.org/0207yh398","country_code":"CN","type":"education","lineage":["https://openalex.org/I154099455"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Honglei Yang","raw_affiliation_strings":["Institute of Space Science, Shandong University, Weihai 264209, China"],"affiliations":[{"raw_affiliation_string":"Institute of Space Science, Shandong University, Weihai 264209, China","institution_ids":["https://openalex.org/I154099455"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5082201226","display_name":"Tianhe Xu","orcid":"https://orcid.org/0000-0001-5818-6264"},"institutions":[{"id":"https://openalex.org/I154099455","display_name":"Shandong University","ror":"https://ror.org/0207yh398","country_code":"CN","type":"education","lineage":["https://openalex.org/I154099455"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Tianhe Xu","raw_affiliation_strings":["Institute of Space Science, Shandong University, Weihai 264209, China"],"affiliations":[{"raw_affiliation_string":"Institute of Space Science, Shandong University, Weihai 264209, China","institution_ids":["https://openalex.org/I154099455"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5039647917","display_name":"Wenfeng Nie","orcid":"https://orcid.org/0000-0002-5505-2903"},"institutions":[{"id":"https://openalex.org/I154099455","display_name":"Shandong University","ror":"https://ror.org/0207yh398","country_code":"CN","type":"education","lineage":["https://openalex.org/I154099455"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Wenfeng Nie","raw_affiliation_strings":["Institute of Space Science, Shandong University, Weihai 264209, China"],"affiliations":[{"raw_affiliation_string":"Institute of Space Science, Shandong University, Weihai 264209, China","institution_ids":["https://openalex.org/I154099455"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5044686939","display_name":"Fan Gao","orcid":"https://orcid.org/0000-0002-8473-1307"},"institutions":[{"id":"https://openalex.org/I154099455","display_name":"Shandong University","ror":"https://ror.org/0207yh398","country_code":"CN","type":"education","lineage":["https://openalex.org/I154099455"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Fan Gao","raw_affiliation_strings":["Institute of Space Science, Shandong University, Weihai 264209, China"],"affiliations":[{"raw_affiliation_string":"Institute of Space Science, Shandong University, Weihai 264209, China","institution_ids":["https://openalex.org/I154099455"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5017697202","display_name":"Meiqian Guan","orcid":null},"institutions":[{"id":"https://openalex.org/I154099455","display_name":"Shandong University","ror":"https://ror.org/0207yh398","country_code":"CN","type":"education","lineage":["https://openalex.org/I154099455"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Meiqian Guan","raw_affiliation_strings":["Institute of Space Science, Shandong University, Weihai 264209, China"],"affiliations":[{"raw_affiliation_string":"Institute of Space Science, Shandong University, Weihai 264209, China","institution_ids":["https://openalex.org/I154099455"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5082201226"],"corresponding_institution_ids":["https://openalex.org/I154099455"],"apc_list":{"value":2500,"currency":"CHF","value_usd":2707},"apc_paid":{"value":2500,"currency":"CHF","value_usd":2707},"fwci":9.1905,"has_fulltext":true,"cited_by_count":12,"citation_normalized_percentile":{"value":0.97587188,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":98},"biblio":{"volume":"11","issue":"23","first_page":"2735","last_page":"2735"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10655","display_name":"GNSS positioning and interference","score":0.9998999834060669,"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":0.9998999834060669,"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/T11405","display_name":"Geophysics and Gravity Measurements","score":0.9915000200271606,"subfield":{"id":"https://openalex.org/subfields/1910","display_name":"Oceanography"},"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/T11325","display_name":"Inertial Sensor and Navigation","score":0.9886000156402588,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/satellite-laser-ranging","display_name":"Satellite laser ranging","score":0.7623392343521118},{"id":"https://openalex.org/keywords/geostationary-orbit","display_name":"Geostationary orbit","score":0.6965550780296326},{"id":"https://openalex.org/keywords/geodesy","display_name":"Geodesy","score":0.6069390177726746},{"id":"https://openalex.org/keywords/orbit-determination","display_name":"Orbit determination","score":0.6002323031425476},{"id":"https://openalex.org/keywords/medium-earth-orbit","display_name":"Medium Earth orbit","score":0.5384732484817505},{"id":"https://openalex.org/keywords/orbit","display_name":"Orbit (dynamics)","score":0.5146580338478088},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.47817426919937134},{"id":"https://openalex.org/keywords/beidou-navigation-satellite-system","display_name":"BeiDou Navigation Satellite System","score":0.4427729845046997},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.43610507249832153},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.386636346578598},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.346628338098526},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.25080040097236633},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.14790749549865723},{"id":"https://openalex.org/keywords/aerospace-engineering","display_name":"Aerospace engineering","score":0.143623948097229},{"id":"https://openalex.org/keywords/laser-ranging","display_name":"Laser ranging","score":0.11155498027801514},{"id":"https://openalex.org/keywords/astronomy","display_name":"Astronomy","score":0.10307025909423828},{"id":"https://openalex.org/keywords/laser","display_name":"Laser","score":0.09426823258399963}],"concepts":[{"id":"https://openalex.org/C81005367","wikidata":"https://www.wikidata.org/wiki/Q1413924","display_name":"Satellite laser ranging","level":4,"score":0.7623392343521118},{"id":"https://openalex.org/C16405173","wikidata":"https://www.wikidata.org/wiki/Q192316","display_name":"Geostationary orbit","level":3,"score":0.6965550780296326},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.6069390177726746},{"id":"https://openalex.org/C107768556","wikidata":"https://www.wikidata.org/wiki/Q302660","display_name":"Orbit determination","level":3,"score":0.6002323031425476},{"id":"https://openalex.org/C199301463","wikidata":"https://www.wikidata.org/wiki/Q218414","display_name":"Medium Earth orbit","level":4,"score":0.5384732484817505},{"id":"https://openalex.org/C196644772","wikidata":"https://www.wikidata.org/wiki/Q3884964","display_name":"Orbit (dynamics)","level":2,"score":0.5146580338478088},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.47817426919937134},{"id":"https://openalex.org/C2777783341","wikidata":"https://www.wikidata.org/wiki/Q857141","display_name":"BeiDou Navigation Satellite System","level":4,"score":0.4427729845046997},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.43610507249832153},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.386636346578598},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.346628338098526},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.25080040097236633},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.14790749549865723},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.143623948097229},{"id":"https://openalex.org/C2985143356","wikidata":"https://www.wikidata.org/wiki/Q1426632","display_name":"Laser ranging","level":3,"score":0.11155498027801514},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.10307025909423828},{"id":"https://openalex.org/C520434653","wikidata":"https://www.wikidata.org/wiki/Q38867","display_name":"Laser","level":2,"score":0.09426823258399963},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C14279187","wikidata":"https://www.wikidata.org/wiki/Q5514012","display_name":"GNSS applications","level":3,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.3390/rs11232735","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs11232735","pdf_url":"https://www.mdpi.com/2072-4292/11/23/2735/pdf?version=1574332411","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:434093b7ec9b4a34bd082fb04886698a","is_oa":true,"landing_page_url":"https://doaj.org/article/434093b7ec9b4a34bd082fb04886698a","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Remote Sensing, Vol 11, Iss 23, p 2735 (2019)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/2072-4292/11/23/2735/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/rs11232735","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Remote Sensing","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/rs11232735","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs11232735","pdf_url":"https://www.mdpi.com/2072-4292/11/23/2735/pdf?version=1574332411","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1121271761","display_name":null,"funder_award_id":"Program","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G1219997571","display_name":null,"funder_award_id":"2016YFB0501701","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G1646855973","display_name":null,"funder_award_id":"Grant No. 41874032","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G2087396116","display_name":null,"funder_award_id":"China","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G2592414929","display_name":null,"funder_award_id":"41574013","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G3085993365","display_name":null,"funder_award_id":"(Grant No.","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G3317480652","display_name":null,"funder_award_id":"Science","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G391238517","display_name":null,"funder_award_id":", and","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G5531273412","display_name":null,"funder_award_id":"41731069","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G5994120800","display_name":null,"funder_award_id":"Natural","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6482822581","display_name":null,"funder_award_id":"41874032, 41731069 and 41574013","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G7726157001","display_name":null,"funder_award_id":"Grant No.","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G7925436323","display_name":null,"funder_award_id":"41874032","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2989705186.pdf","grobid_xml":"https://content.openalex.org/works/W2989705186.grobid-xml"},"referenced_works_count":30,"referenced_works":["https://openalex.org/W10299157","https://openalex.org/W229427236","https://openalex.org/W992967320","https://openalex.org/W1992097249","https://openalex.org/W2032793664","https://openalex.org/W2042618655","https://openalex.org/W2051122151","https://openalex.org/W2060886060","https://openalex.org/W2065189436","https://openalex.org/W2077246248","https://openalex.org/W2159618494","https://openalex.org/W2160332206","https://openalex.org/W2207959455","https://openalex.org/W2474981059","https://openalex.org/W2528071000","https://openalex.org/W2550760450","https://openalex.org/W2737779888","https://openalex.org/W2763430208","https://openalex.org/W2765256187","https://openalex.org/W2799580356","https://openalex.org/W2800569640","https://openalex.org/W2892159531","https://openalex.org/W2919576603","https://openalex.org/W2944296034","https://openalex.org/W6608981117","https://openalex.org/W6683344722","https://openalex.org/W6683474271","https://openalex.org/W6686749315","https://openalex.org/W6698736606","https://openalex.org/W6941086810"],"related_works":["https://openalex.org/W2286863940","https://openalex.org/W4327663258","https://openalex.org/W2382820484","https://openalex.org/W2904038486","https://openalex.org/W2080383902","https://openalex.org/W2074869339","https://openalex.org/W3083936823","https://openalex.org/W2742469414","https://openalex.org/W2187312203","https://openalex.org/W2949341289"],"abstract_inverted_index":{"The":[0,45,106,200,254,275],"BeiDou":[1],"Navigation":[2],"Satellite":[3,30],"System":[4],"(BDS)":[5],"of":[6,14,20,42,48,66,88,96,143,152,160,167,175,181,192,210,218,280,313,321,338,376,385],"China":[7],"is":[8,51,225,341],"currently":[9],"in":[10,124,263,283,328,359,433],"the":[11,54,63,120,129,141,144,150,157,161,165,173,179,188,193,206,212,259,304,334,371,400,434],"hybrid-use":[12],"period":[13],"BDS-2":[15,67,89,229,236,241,377],"and":[16,68,82,118,133,155,178,196,244,272,291,300,343,349,356,395,415,436],"BDS-3":[17,69,97,249],"satellites.":[18,274],"All":[19],"them":[21],"are":[22,113,137,184,286,316,406,429],"equipped":[23],"with":[24,306,361,417],"Laser":[25,31],"Retroreflect":[26],"Arrays":[27],"(LRAs)":[28],"for":[29,228,234,240,247,269,303,346],"Ranging":[32],"(SLR),":[33],"which":[34],"can":[35,380],"directly":[36],"obtain":[37,392],"an":[38],"independent,":[39],"sub-centimetre":[40],"level":[41,384],"distance":[43],"measurement.":[44],"main":[46],"purpose":[47],"this":[49],"contribution":[50],"to":[52,61,102,116,139,186,365,402,408],"use":[53],"solely":[55],"SLR":[56,122,176,182,219,369,412,422,426],"Normal":[57],"Points":[58],"(NPs)":[59],"data":[60],"determinate":[62],"precise":[64,308,398],"orbit":[65,108,169,189,261,267,373],"satellites,":[70,90,98],"including":[71],"one":[72,83],"Geostationary":[73],"Earth":[74,85],"Orbit":[75,86],"(GEO),":[76],"three":[77,235],"Inclined":[78],"Geo-Synchronous":[79],"Orbits":[80],"(ISGO),":[81],"Medium":[84],"(MEO)":[87],"as":[91,93,295,297,352,354],"well":[92,296,353],"four":[94,248],"MEO":[95,242,250,273,282,326,348],"from":[99,109,223],"1":[100],"January":[101],"30":[103],"June":[104],"2019.":[105],"microwave-based":[107],"Wuhan":[110],"University":[111],"(WUM)":[112],"firstly":[114],"validated":[115],"mark":[117],"eliminate":[119],"bad":[121],"observations":[123,177,423],"our":[125,264],"preprocessing":[126],"stage.":[127],"Then,":[128],"3-,":[130],"5-,":[131],"7-,":[132,195],"9-day":[134,197,255,276,339,403],"arc":[135,147,198,256,404],"solutions":[136,257,405],"performed":[138],"investigate":[140],"impact":[142],"different":[145],"orbital":[146],"lengths":[148],"on":[149,172],"quality":[151,191],"SLR-derived":[153],"orbits":[154,327],"test":[156],"optimal":[158,335],"solution":[159],"multi-day":[162,265],"arc.":[163],"Moreover,":[164],"dependency":[166],"SLR-only":[168,266,372,397],"determination":[170,190,268,374],"accuracy":[171,262,375],"number":[174,180],"sites":[183,427],"discussed":[185],"explore":[187],"3-,5-,":[194],"solutions.":[199],"results":[201],"indicate":[202],"that":[203,428],"(1)":[204],"during":[205],"half-year":[207],"time":[208],"span":[209],"2019,":[211],"overall":[213],"Root":[214],"Mean":[215],"Square":[216],"(RMS)":[217],"validation":[220],"residuals":[221],"derived":[222],"WUM":[224,307,362],"19.0":[226],"cm":[227,233,239,246,293,302],"GEO":[230,378],"C01,":[231],"5.2\u20137.3":[232],"IGSO,":[237],"3.4":[238],"C11,":[243],"4.4\u20135.7":[245],"satellites":[251],"respectively.":[252],"(2)":[253],"present":[258],"best":[260],"BDS":[270,281,314,325,347],"IGSO":[271,315,350],"overlaps":[277,340],"median":[278],"RMS":[279],"RTN":[284,331],"directions":[285],"evaluated":[287],"at":[288,424],"3.6\u20135.7,":[289],"12.4\u201321.6,":[290],"15.6\u201323.9":[292],"respectively,":[294,351],"5.7\u20139.6,":[298],"15.0\u201336.8,":[299],"16.5\u201335.2":[301],"comparison":[305,360],"orbits,":[309],"while":[310],"these":[311],"values":[312],"larger":[317],"by":[318],"a":[319,383,393,410],"factor":[320],"about":[322],"3\u201310":[323],"than":[324,419],"their":[329],"corresponding":[330],"directions.":[332],"Furthermore,":[333],"average":[336],"3D-RMS":[337],"0.49":[342],"1.89":[344],"m":[345,358],"0.55":[355],"1.85":[357],"orbits.":[363],"Owing":[364],"its":[366],"extremely":[367],"rare":[368],"observations,":[370],"satellite":[379],"only":[381],"reach":[382],"10":[386],"metres":[387],"or":[388],"worse.":[389],"(3)":[390],"To":[391],"stable":[394],"reliable":[396],"orbit,":[399],"7-day":[401],"necessary":[407],"provide":[409],"sufficient":[411],"observation":[413],"quantity":[414],"geometry,":[416],"more":[418],"50\u201380":[420],"available":[421],"5\u20136":[425],"evenly":[430],"distributed,":[431],"both":[432],"Northern":[435],"Southern":[437],"Hemispheres.":[438]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":1},{"year":2020,"cited_by_count":4}],"updated_date":"2026-04-19T08:26:33.389920","created_date":"2025-10-10T00:00:00"}
