Title :
The research of digital close-loop depolarized FOG
Author :
Xiaowu, Shu ; Cheng, Liu
Author_Institution :
State Key Lab. of Modern Opt. Instrum., Zhejiang Univ., Hangzhou, China
Abstract :
The fiber-optic gyroscope (FOG) has been selected for the inertial navigation system (INS) function of the new airspace. We have completed the development of an intermediate grade closed-loop mode FOG (0.2 to 0.4 degree/h, 1 σ, 500 ppm, 1 σ) satisfying the environment requirement with the 500 meter mono-mode fiber, which is controlled exclusively by a high-speed digital signal processor (DSP). The control and compensation algorithms are implemented in the software and carried out by a single high speed DSP. The processor also takes care of the communication protocol via a parallel bus
Keywords :
aerospace control; closed loop systems; compensation; digital instrumentation; fibre optic gyroscopes; inertial navigation; aerospace control; closed-loop mode; communication protocol; compensation; depolarisation; digital instrumentation; digital signal processor; fiber-optic gyroscope; inertial navigation system; mono-mode fiber; Digital signal processing; High speed optical techniques; Optical fiber communication; Optical fiber couplers; Optical fiber devices; Optical fiber polarization; Optical interferometry; Optical propagation; Optical sensors; Sagnac interferometers;
Conference_Titel :
Intelligent Control and Automation, 2000. Proceedings of the 3rd World Congress on
Conference_Location :
Hefei
Print_ISBN :
0-7803-5995-X
DOI :
10.1109/WCICA.2000.863495
