A temperature-controlled optical fiber inertial navigation structure and its design method
A fiber optic inertial navigation and design method technology, applied in the field of inertial navigation, can solve problems such as the temperature drift of the fiber optic gyroscope, and achieve the effect of suppressing temperature drift and improving stability
Active Publication Date: 2022-05-10
NO 717 INST CHINA MARINE HEAVY IND GRP
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[0005] Aiming at the problems existing in the prior art, the present invention provides a temperature-controlled optical fiber inertial navigation structure and its design method, which solves the problem that the existing optical fiber inertial navigation system does not effectively solve the temperature drift of the optical fiber gyroscope
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[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0045] The fiber optic gyro of the fiber optic inertial navigation system is very sensitive to changes in the ambient temperature. Temperature changes will cause a large bias drift in the fiber optic gyroscope. Aiming at the temperature drift of the fiber optic gyroscope, the existing technology performs temperature compensation on the fiber opti...
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The invention provides a temperature-controlled optical fiber inertial navigation structure and a design method thereof, including establishing a thermal resistance network model of the temperature-controlled optical fiber inertial navigation structure, and obtaining the relational expression of each node temperature in the thermal resistance network model; based on the thermal resistance network model and its The relationship between the temperature of each node is used to analyze the temperature characteristics of the temperature-controlled fiber optic inertial navigation structure; based on the temperature characteristics of the temperature-controlled fiber optic inertial navigation structure, the structure of the temperature-controlled fiber optic inertial navigation is designed with the goal of building a stable temperature field around the fiber optic gyroscope. The present invention analyzes the temperature characteristics of the temperature-controlled optical fiber inertial navigation structure by establishing a thermal resistance network model of the temperature-controlled optical fiber inertial navigation structure, and aims to build a stable temperature field around the optical fiber gyroscope according to the temperature characteristics of the temperature-controlled optical fiber inertial navigation structure. Design the structure of temperature-controlled fiber optic inertial navigation. The temperature-controlled fiber optic inertial navigation structure designed by this method can make the fiber optic gyroscope work in a relatively stable temperature field, improve the stability of the fiber optic gyroscope output, and suppress the temperature drift of the fiber optic gyroscope from the source.
Description
technical field [0001] The invention relates to the field of inertial navigation, in particular to a temperature-controlled optical fiber inertial navigation structure and a design method thereof. Background technique [0002] Fiber optic inertial navigation system is a kind of strap-down inertial navigation system. Compared with other inertial navigation systems, it has the advantages of long life, high reliability and light weight. At the same time, the startup time of fiber optic inertial navigation system Short, good adaptability to the mechanical environment, so a wide range of applications. [0003] Although the fiber optic inertial navigation system has many obvious advantages, it also has its own limitations. In fact, a serious problem encountered in engineering applications of fiber optic inertial navigation is that the fiber optic gyroscope is very sensitive to changes in the ambient temperature. The temperature change will cause a larger bias drift of the fiber ...
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IPC IPC(8): G01C19/72
CPCG01C19/72
Inventor 董文杰刘元锋杨建强马晓熊海宏黄勇
Owner NO 717 INST CHINA MARINE HEAVY IND GRP