{"title":"Study on Necessary Technique of Positioning : To Evaluate the Navigation Environmental Difficulty","authors":"Nam-Ninh Ha, Hiroaki Kobayashi","doi":"10.9749/JIN.118.291","DOIUrl":null,"url":null,"abstract":"","PeriodicalId":270177,"journal":{"name":"The Journal of Japan Institute of Navigation","volume":"78 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2008-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Journal of Japan Institute of Navigation","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.9749/JIN.118.291","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}