{"title":"Inertial pseudo star reference unit","authors":"J. Gilmore, T. Chien, R. Wingler","doi":"10.1109/PLANS.1992.185844","DOIUrl":null,"url":null,"abstract":"Summary form only given. The authors present the development of a precision pointing system, the inertial pseudo-star reference unit (IPSRU). The IPSRU implements a collimated light source mounted on an inertially stabilized platform that is configured using a centrally located two-degree-of-freedom (2-DOF) flexure assembly. The platform inertial sensing is achieved through the combined use of a precision, low-noise 2-DOF dry-tuned rotor gyro (DTG) and two angular displacement sensors (ADS). The composite gyro and ADS implementation optimally combines low-frequency gyro measurements with ADS higher frequency sensing to achieve a composite wide band, extremely low noise, and inertial sensing capability. The collimated light beam in effect becomes a jitter-stabilized pseudo-star. In addition, its pointing direction in inertial space can be changed at a precise rate by commands applied via torquing signals to the gyro.<<ETX>>","PeriodicalId":422101,"journal":{"name":"IEEE PLANS 92 Position Location and Navigation Symposium Record","volume":"10 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1992-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE PLANS 92 Position Location and Navigation Symposium Record","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PLANS.1992.185844","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 7
Abstract
Summary form only given. The authors present the development of a precision pointing system, the inertial pseudo-star reference unit (IPSRU). The IPSRU implements a collimated light source mounted on an inertially stabilized platform that is configured using a centrally located two-degree-of-freedom (2-DOF) flexure assembly. The platform inertial sensing is achieved through the combined use of a precision, low-noise 2-DOF dry-tuned rotor gyro (DTG) and two angular displacement sensors (ADS). The composite gyro and ADS implementation optimally combines low-frequency gyro measurements with ADS higher frequency sensing to achieve a composite wide band, extremely low noise, and inertial sensing capability. The collimated light beam in effect becomes a jitter-stabilized pseudo-star. In addition, its pointing direction in inertial space can be changed at a precise rate by commands applied via torquing signals to the gyro.<>
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