{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1363670320880029952.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/98ja00678"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F98JA00678"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/98JA00678"}}],"dc:title":[{"@value":"Tomographic inversion for ALIS noise and resolution"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>In this report the problems of resolution and noise sensitivity of tomographic reconstructions from ground‐based multistation imaging of aurora with the auroral large imaging system (ALIS) are considered. ALIS is a ground‐based grid of high‐performance CCD‐imaging stations at high latitudes. For evaluation of the resolution and noise sensitivity of current tomographic reconstruction procedures a full model simulation of the ALIS system is presented. The results show that relative errors are typically in the range 0.05 – 0.1 for typical noise levels in measurements of aurora. A general method to estimate resolution in a tomographic imaging system is developed and used to give estimates of the horizontal and vertical resolution. Its current limitations and future perspective are briefly discussed. A method to retrieve feasible tomographic reconstructions from a few image projections with variable noise level are outlined.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1383670320880029952","@type":"Researcher","foaf:name":[{"@value":"Björn Gustavsson"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Space Physics"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"1998-11","prism:volume":"103","prism:number":"A11","prism:startingPage":"26621","prism:endingPage":"26632"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F98JA00678"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/98JA00678"}],"createdAt":"2004-02-03","modifiedAt":"2023-09-23","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050022708918026368","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Image Reconstruction Algorithm Using Weighted Mean of Ordered-Subsets EM and MART for Computed Tomography"}]},{"@id":"https://cir.nii.ac.jp/crid/1050304183897640832","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Tomographic Image Reconstruction Based on Minimization of Symmetrized Kullback-Leibler Divergence"}]},{"@id":"https://cir.nii.ac.jp/crid/1360588380165110912","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Application of generalized aurora computed tomography to the EISCAT_3D project"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848665119470080","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Stereoscopic determination of all-sky altitude map of aurora using two ground-based Nikon DSLR cameras"}]},{"@id":"https://cir.nii.ac.jp/crid/2051151842098768640","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Eastward-expanding auroral surges observed in the post-midnight sector during a multiple-onset substorm"}]},{"@id":"https://cir.nii.ac.jp/crid/2051433317036805504","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Altitude of pulsating arcs as inferred from tomographic measurements"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/98ja00678"},{"@type":"CROSSREF","@value":"10.1155/2018/8973131_references_DOI_F3rA0epEb1lfvWmkwufJzDQ5GG7"},{"@type":"CROSSREF","@value":"10.3390/math10224277_references_DOI_F3rA0epEb1lfvWmkwufJzDQ5GG7"},{"@type":"CROSSREF","@value":"10.1186/s40623-022-01592-8_references_DOI_F3rA0epEb1lfvWmkwufJzDQ5GG7"},{"@type":"CROSSREF","@value":"10.5194/angeo-42-179-2024_references_DOI_F3rA0epEb1lfvWmkwufJzDQ5GG7"},{"@type":"CROSSREF","@value":"10.1186/s40623-015-0350-8_references_DOI_F3rA0epEb1lfvWmkwufJzDQ5GG7"},{"@type":"CROSSREF","@value":"10.5194/angeo-31-1543-2013_references_DOI_F3rA0epEb1lfvWmkwufJzDQ5GG7"}]}