{"title":"基于速率偏差RLG的寻北器研究","authors":"Zhang Yan, Wu Wenqi, Cao Ju-liang","doi":"10.1109/ISSCAA.2010.5633349","DOIUrl":null,"url":null,"abstract":"Rated biased RLG is used in the north-finder based on a continuous rotation platform. Along with the rotating platform, the input axis of RLG relative to the earth rotation rate vector periodically changes. In this way, the measurement error of RLG is modulated in every direction. The cross-correlation analysis method is used for getting the azimuth angle. Considering the periodicity of gyro outputs, a digital filter is designed to decrease the influence of quantization error of RLG and some other wideband error sources. Experiment results show that the “cross-correlation analysis + filter” method can markedly increase the precision of the north-finder.","PeriodicalId":324652,"journal":{"name":"2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics","volume":"116 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"The study of north-finder based on rate biased RLG\",\"authors\":\"Zhang Yan, Wu Wenqi, Cao Ju-liang\",\"doi\":\"10.1109/ISSCAA.2010.5633349\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Rated biased RLG is used in the north-finder based on a continuous rotation platform. Along with the rotating platform, the input axis of RLG relative to the earth rotation rate vector periodically changes. In this way, the measurement error of RLG is modulated in every direction. The cross-correlation analysis method is used for getting the azimuth angle. Considering the periodicity of gyro outputs, a digital filter is designed to decrease the influence of quantization error of RLG and some other wideband error sources. Experiment results show that the “cross-correlation analysis + filter” method can markedly increase the precision of the north-finder.\",\"PeriodicalId\":324652,\"journal\":{\"name\":\"2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics\",\"volume\":\"116 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2010-06-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISSCAA.2010.5633349\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISSCAA.2010.5633349","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The study of north-finder based on rate biased RLG
Rated biased RLG is used in the north-finder based on a continuous rotation platform. Along with the rotating platform, the input axis of RLG relative to the earth rotation rate vector periodically changes. In this way, the measurement error of RLG is modulated in every direction. The cross-correlation analysis method is used for getting the azimuth angle. Considering the periodicity of gyro outputs, a digital filter is designed to decrease the influence of quantization error of RLG and some other wideband error sources. Experiment results show that the “cross-correlation analysis + filter” method can markedly increase the precision of the north-finder.
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