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内框架光学跟踪陀螺是光、机、电、磁等的组合体。它既包括能敏感各种干扰的低噪声探测器,又包括构成干扰源的电场、磁场以及运动零件。这些干扰源又都十分靠近探测器,因而对探测器产生程度不一的各种干扰噪声。这些并非由探测器和电子线路自身随机起伏噪声所引起的干扰噪声应引起设计人员的充分重视。本文讨论了电场干扰噪声,磁场干扰噪声,热背景干扰噪声,振动噪声,气动噪声等。本文根据研究结果解析了这些噪声存在的机理,并从理论上提出抑制这些噪声的技术途径。电场干扰噪声是由陀螺电机系统的交变电场通过空间分布电容耦合到探测器所产生的干扰噪声。在干扰源附近设置良好接地的电屏蔽层就可将电场耦合隔离,从而使电场干
The inner frame optical tracking gyroscope is a combination of light, machine, electricity, magnetism and so on. It includes both low-noise detectors that can be sensitive to a variety of disturbances, as well as electric, magnetic and moving parts that form the source of interference. These sources of interference, in turn, are all very close to the detector, creating various levels of interfering noise on the detector. These interference noise, which is not caused by the random noise of the detector and the electronic circuit itself, should be given full consideration by the designer. This article discusses the electric field interference noise, magnetic interference noise, thermal background interference noise, vibration noise, aerodynamic noise and so on. Based on the research results, this paper analyzes the mechanism of the existence of these noises, and puts forward the technical way of suppressing these noises theoretically. Electric Field Disturbance Noise is the interference noise generated by the capacitive coupling of an alternating electric field of a gyroscopic motor system through a spatial distribution to the detector. A well-grounded electrical shield can be placed near the source of the interference to isolate the electric field so that the electric field is dry