{"id":"https://openalex.org/W2912958092","doi":"https://doi.org/10.1142/s230138501950002x","title":"Waypoint Constrained Multi-Phase Optimal Guidance of Spacecraft for Soft Lunar Landing","display_name":"Waypoint Constrained Multi-Phase Optimal Guidance of Spacecraft for Soft Lunar Landing","publication_year":2019,"publication_date":"2019-02-14","ids":{"openalex":"https://openalex.org/W2912958092","doi":"https://doi.org/10.1142/s230138501950002x","mag":"2912958092"},"language":"en","primary_location":{"id":"doi:10.1142/s230138501950002x","is_oa":false,"landing_page_url":"https://doi.org/10.1142/s230138501950002x","pdf_url":null,"source":{"id":"https://openalex.org/S4210169569","display_name":"Unmanned Systems","issn_l":"2301-3850","issn":["2301-3850","2301-3869"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319815","host_organization_name":"World Scientific","host_organization_lineage":["https://openalex.org/P4310319815"],"host_organization_lineage_names":["World Scientific"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Unmanned Systems","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"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/A5045903247","display_name":"Kapil Sachan","orcid":"https://orcid.org/0000-0001-6006-4194"},"institutions":[{"id":"https://openalex.org/I59270414","display_name":"Indian Institute of Science Bangalore","ror":"https://ror.org/04dese585","country_code":"IN","type":"education","lineage":["https://openalex.org/I59270414"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Kapil Sachan","raw_affiliation_strings":["Department of Aerospace Engineering, Indian Institute of Science, Bangalore 560012, India"],"raw_orcid":"https://orcid.org/0000-0001-6006-4194","affiliations":[{"raw_affiliation_string":"Department of Aerospace Engineering, Indian Institute of Science, Bangalore 560012, India","institution_ids":["https://openalex.org/I59270414"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5070039223","display_name":"Radhakant Padhi","orcid":"https://orcid.org/0000-0001-5638-0995"},"institutions":[{"id":"https://openalex.org/I59270414","display_name":"Indian Institute of Science Bangalore","ror":"https://ror.org/04dese585","country_code":"IN","type":"education","lineage":["https://openalex.org/I59270414"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Radhakant Padhi","raw_affiliation_strings":["Department of Aerospace Engineering, Indian Institute of Science, Bangalore 560012, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Aerospace Engineering, Indian Institute of Science, Bangalore 560012, India","institution_ids":["https://openalex.org/I59270414"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I59270414"],"apc_list":null,"apc_paid":null,"fwci":19.7873,"has_fulltext":false,"cited_by_count":19,"citation_normalized_percentile":{"value":0.98661751,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"07","issue":"02","first_page":"83","last_page":"104"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11082","display_name":"Spacecraft Dynamics and Control","score":0.9994999766349792,"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/T11082","display_name":"Spacecraft Dynamics and Control","score":0.9994999766349792,"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/T10325","display_name":"Astro and Planetary Science","score":0.9962999820709229,"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"}},{"id":"https://openalex.org/T11323","display_name":"Gamma-ray bursts and supernovae","score":0.9950000047683716,"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/waypoint","display_name":"Waypoint","score":0.9176957607269287},{"id":"https://openalex.org/keywords/spacecraft","display_name":"Spacecraft","score":0.8095771074295044},{"id":"https://openalex.org/keywords/soft-landing","display_name":"Soft landing","score":0.759989857673645},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.4890170991420746},{"id":"https://openalex.org/keywords/touchdown","display_name":"Touchdown","score":0.4569137990474701},{"id":"https://openalex.org/keywords/position","display_name":"Position (finance)","score":0.44738131761550903},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.4245739281177521},{"id":"https://openalex.org/keywords/fuel-efficiency","display_name":"Fuel efficiency","score":0.4135398268699646},{"id":"https://openalex.org/keywords/aerospace-engineering","display_name":"Aerospace engineering","score":0.3908715546131134},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.3472130298614502},{"id":"https://openalex.org/keywords/simulation","display_name":"Simulation","score":0.33985331654548645}],"concepts":[{"id":"https://openalex.org/C2781271823","wikidata":"https://www.wikidata.org/wiki/Q138081","display_name":"Waypoint","level":2,"score":0.9176957607269287},{"id":"https://openalex.org/C29829512","wikidata":"https://www.wikidata.org/wiki/Q40218","display_name":"Spacecraft","level":2,"score":0.8095771074295044},{"id":"https://openalex.org/C65424074","wikidata":"https://www.wikidata.org/wiki/Q2221605","display_name":"Soft landing","level":2,"score":0.759989857673645},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4890170991420746},{"id":"https://openalex.org/C2779860262","wikidata":"https://www.wikidata.org/wiki/Q650807","display_name":"Touchdown","level":2,"score":0.4569137990474701},{"id":"https://openalex.org/C198082294","wikidata":"https://www.wikidata.org/wiki/Q3399648","display_name":"Position (finance)","level":2,"score":0.44738131761550903},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.4245739281177521},{"id":"https://openalex.org/C45882903","wikidata":"https://www.wikidata.org/wiki/Q5042317","display_name":"Fuel efficiency","level":2,"score":0.4135398268699646},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.3908715546131134},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.3472130298614502},{"id":"https://openalex.org/C44154836","wikidata":"https://www.wikidata.org/wiki/Q45045","display_name":"Simulation","level":1,"score":0.33985331654548645},{"id":"https://openalex.org/C139719470","wikidata":"https://www.wikidata.org/wiki/Q39680","display_name":"Macroeconomics","level":1,"score":0.0},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","level":1,"score":0.0},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.0},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.0},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C95457728","wikidata":"https://www.wikidata.org/wiki/Q309","display_name":"History","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}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1142/s230138501950002x","is_oa":false,"landing_page_url":"https://doi.org/10.1142/s230138501950002x","pdf_url":null,"source":{"id":"https://openalex.org/S4210169569","display_name":"Unmanned Systems","issn_l":"2301-3850","issn":["2301-3850","2301-3869"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319815","host_organization_name":"World Scientific","host_organization_lineage":["https://openalex.org/P4310319815"],"host_organization_lineage_names":["World Scientific"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Unmanned Systems","raw_type":"journal-article"},{"id":"pmh:oai::78347","is_oa":false,"landing_page_url":null,"pdf_url":null,"source":{"id":"https://openalex.org/S4306401702","display_name":"Universitas Pasundan institutional repositories & scientific journals (Universitas Pasundan)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210159629","host_organization_name":"Universitas Pasundan","host_organization_lineage":["https://openalex.org/I4210159629"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":"","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy","score":0.8500000238418579}],"awards":[],"funders":[{"id":"https://openalex.org/F4320310071","display_name":"Indian Institute of Science","ror":"https://ror.org/04dese585"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":30,"referenced_works":["https://openalex.org/W749886983","https://openalex.org/W1569229890","https://openalex.org/W1936500455","https://openalex.org/W1973334977","https://openalex.org/W1993397805","https://openalex.org/W1993612971","https://openalex.org/W2005263385","https://openalex.org/W2013893948","https://openalex.org/W2020633882","https://openalex.org/W2027209642","https://openalex.org/W2029460101","https://openalex.org/W2031229791","https://openalex.org/W2057529943","https://openalex.org/W2061019753","https://openalex.org/W2061134577","https://openalex.org/W2073476719","https://openalex.org/W2075915178","https://openalex.org/W2098375154","https://openalex.org/W2100919908","https://openalex.org/W2132701044","https://openalex.org/W2141100342","https://openalex.org/W2151755538","https://openalex.org/W2211705798","https://openalex.org/W2303919114","https://openalex.org/W2563225069","https://openalex.org/W2593547701","https://openalex.org/W2754599268","https://openalex.org/W2777488634","https://openalex.org/W2961703895","https://openalex.org/W4285719527"],"related_works":["https://openalex.org/W2052687496","https://openalex.org/W2902625547","https://openalex.org/W1577998544","https://openalex.org/W2367100124","https://openalex.org/W4200102937","https://openalex.org/W784629223","https://openalex.org/W2057228602","https://openalex.org/W2588014264","https://openalex.org/W322471115","https://openalex.org/W3005624946"],"abstract_inverted_index":{"A":[0],"waypoint":[1],"constrained":[2],"multi-phase":[3],"nonlinear":[4],"optimal":[5,111],"guidance":[6,39,98],"scheme":[7],"is":[8,49,105,116],"presented":[9,118],"in":[10,119],"this":[11,120],"paper":[12,121],"for":[13,63],"the":[14,21,26,42,60,71,77,86,96,101,129,145,148,159,165],"soft":[15],"landing":[16,56],"of":[17,85,125,147,161,164],"a":[18,50,106],"spacecraft":[19,43],"on":[20],"Lunar":[22],"surface":[23],"by":[24,59],"using":[25],"recently":[27],"developed":[28],"computationally":[29],"efficient":[30],"Generalized":[31],"Model":[32],"Predictive":[33],"Static":[34],"Programming":[35],"(G-MPSP).":[36],"The":[37],"proposed":[38,166],"ensures":[40],"that":[41,67],"passes":[44],"through":[45],"two":[46],"waypoints,":[47],"which":[48,104,157],"strong":[51],"requirement":[52,127],"to":[53,90,122,128,143],"facilitate":[54,123],"proper":[55],"site":[57],"detection":[58],"on-board":[61,162],"camera":[62],"mission":[64],"safety.":[65],"Constraints":[66],"are":[68],"required":[69],"at":[70,76],"waypoints":[72],"as":[73,75],"well":[74],"terminal":[78],"point":[79],"include":[80],"position,":[81],"velocity,":[82],"and":[83],"attitude":[84],"spacecraft.":[87],"In":[88],"addition":[89],"successfully":[91],"meeting":[92],"these":[93],"hard":[94],"constraints,":[95],"G-MPSP":[97],"also":[99,117],"minimizes":[100],"fuel":[102,126],"consumption,":[103],"very":[107],"good":[108],"advantage.":[109],"An":[110],"final":[112],"time":[113],"selection":[114],"procedure":[115],"minimization":[124],"best":[130],"extent":[131],"possible.":[132],"Extensive":[133],"simulation":[134,152],"studies":[135],"have":[136],"been":[137,154],"carried":[138,155],"out":[139],"with":[140],"various":[141],"perturbations":[142],"illustrate":[144],"effectiveness":[146],"algorithm.":[149],"Finally,":[150],"processor-in-loop":[151],"has":[153],"out,":[156],"demonstrates":[158],"feasibility":[160],"implementation":[163],"guidance.":[167]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":6},{"year":2020,"cited_by_count":3},{"year":2019,"cited_by_count":1}],"updated_date":"2026-05-21T06:26:12.895304","created_date":"2025-10-10T00:00:00"}
