{"title":"Precise astroinertial attitude determination of a maneuvering land-survey satellite","authors":"Y. Somov, S. Butyrin, S. Somov, C. Hajiyev","doi":"10.1109/RAST.2017.8003010","DOIUrl":"https://doi.org/10.1109/RAST.2017.8003010","url":null,"abstract":"We consider some principal problems on precise attitude determination of the maneuvering land-survey satellites placed on the orbit altitudes from 600 up to 1000 km. We present onboard discrete algorithms for signal processing, calibration and alignment of astroinertial attitude determination system which is a part of the strapdown inertial navigation system.","PeriodicalId":434418,"journal":{"name":"2017 8th International Conference on Recent Advances in Space Technologies (RAST)","volume":"182 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120939231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Development of a mili-Newton level thrust stand for thrust measurements of electric propulsion systems","authors":"Ugur Kokal, M. Çelik","doi":"10.1109/RAST.2017.8002970","DOIUrl":"https://doi.org/10.1109/RAST.2017.8002970","url":null,"abstract":"Electric propulsion systems operate with high efficiency, however they generate low thrust. Therefore pendulum based sensitive measurement systems are used for thrust measurements of electric propulsion systems. In this study, a thrust stand is developed and built for the thrust measurements of electric thrusters. The thrust stand that is developed is based on inverted pendulum configuration, and can measure thrust forces at mili-Newton levels with a resolution of ∼100 micro-Newton levels. Measurement range can be changed according to the thruster, by adjusting the components of the thrust stand.","PeriodicalId":434418,"journal":{"name":"2017 8th International Conference on Recent Advances in Space Technologies (RAST)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127266105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}