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System based on fiber-optic gravimeters for a measurement of gravitational field gradient vector for navigation of flying objects

机译:基于光纤重力仪的系统,用于测量引力场梯度矢量,用于飞行物体的导航

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Abstract: There are many tasks, which are required simultaneously to measure value and direction of gravitation field vector in 3D space. For instance, the task of flying objects navigation by measurement of full gravitation field vector horizontal gradient. To solve this problem is suggested the system, consists of two remote fiber-optic gravimeters, situated in different ends of flying object. Fiber-optic gravimeter based on effect of influence of longitudinal strains of silicon single-mode fibers on lightwave phase shift. Fiber-optic gravimeter includes fiber-optic interferometers Mach-Zehnder and electronic scheme for measurement of phase shift. Sensitivity of this fiber-optic gravimeter is 10$+$MIN@7$/ g, where g-acceleration of free fall, if resolution of electronic scheme is 10$+$MIN@3$/ rad. As source of radiation for fiber-optic gravimeter is employed tunable diode laser on GaAlAs-GaAs with external dispertial cavity and frequency modulation of radiation. Frequency modulation of radiation is applied for measurement of phase shift in fiber-optic interferometers. !4
机译:摘要:在3D空间中测量引力场矢量的值和方向需要同时完成许多任务。例如,通过测量全重力场矢量水平梯度来导航物体的任务。为了解决这个问题,建议该系统由两个遥远的光纤重力仪组成,分别位于飞行物体的两端。光纤重力仪基于硅单模光纤的纵向应变对光波相移的影响。光纤重力仪包括光纤干涉仪Mach-Zehnder和用于测量相移的电子方案。该光纤重力仪的灵敏度为10 $ + $ MIN @ 7 $ / g,如果电子方案的分辨率为10 $ + $ MIN @ 3 $ / rad,其中g的自由落体加速度。作为光纤重力仪的辐射源,是在GaAlAs-GaAs上采用具有外部色散腔和辐射频率调制的可调谐二极管激光器。辐射的调频应用于光纤干涉仪中的相移测量。 !4

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