） 摘要： FSINS (Fiber Strapdown Inertial Navigation System) based on fiber optic gyros, is used more and more widely nowadays
The navigation precsion of FSINS is mainly determained by the performance of its inertial measurment unit (IMU, including three fiber optic gyros and three accelerometers)
Different from the traditional FSINS, this paper proposed a new conformation named RFSINS( Rotary FSINS ) to improve the navigation precsion of SINS, by adding a rotating disk, on which two mid-precision FOGs were placed orthogonally, while the third high-precision FOG ,which is sensing orientation angular rate, isn't fixed on the disk
The purpose of the proposed scheme of RFSINS is to increase the presiton of inertial navagation system clearly as well as lower it's cost, in the way of modulating and depressing the errors of IMU through the rotating disk
The error-modulated theory of RFSINS was analysed, and the structure of RFSINS was proposed
And also, a method of compensating the FOG's output errors which caused by the temperature in RFSINS was propsed in this paper
At last, the result of simulation and experimentation indicated that the propsed scheme can improve the positioning precision of strapdown inertial navigation system apparently
Besides, in line with the development of FSINS, the proposed scheme with the characters of low-cost and high-precision,will have great value in its engeering application
关键词： Fiber Strapdown Inertial Navigation System; Rotary FSINS; modulation of errors Lai Jizhou *
） Abstract： FSINS (Fiber Strapdown Inertial Navigation System) based on fiber optic gyros, is used more and more widely nowadays
The navigation precsion of FSINS is mainly determained by the performance of its inertial measurment unit (IMU, including three fiber optic gyros and three accelerometers)
Different from the traditional FSINS, this paper proposed a new conformation named RFSINS( Rotary FSINS ) to improve the navigation precsion of SINS, by adding a rotating disk, on which two mid-precision FOGs were placed orthogonally, while the third high-precision FOG ,which is sensing orientation angular rate, isn't fixed on the disk
The purpose of the proposed scheme of RFSINS is to increase the presiton of inertial navagation system clearly as well as lower it's cost, in the way of modulating and depressing the errors of IMU through the rotating disk
The error-modulated theory of RFSINS was analysed, and the structure of RFSINS was proposed
And also, a method of compensating the FOG's output errors which caused by the temperature in RFSINS was propsed in this paper
At last, the result of simulation and experimentation indicated that the propsed scheme can improve the positioning precision of strapdown inertial navigation system apparently
Besides, in line with the development of FSINS, the proposed scheme with the characters of low-cost and high-precision,will have great value in its engeering application
Keywords： Fiber Strapdown Inertial Navigation System; Rotary FSINS; modulation of errors 下载PDF阅读器 PDF全文下载： 初稿 （ 121 ） 作者简介： LAI Jizhou（1977-）
刘建业 2
（ 1、 南京航空航天大学自动化学院导航研究中心
2、 南京航空航天大学自动化学院导航研究中心
male,Associate Professor,Basic research fields:FOG-based inertial navigation technology,SINS/GNSS integrated navigation and intelligent measurement and control system
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孙永荣等
旋转光纤捷联惯导系统的误差调制研究及建模[EB/OL]
