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    • 8. 发明申请
    • Electromagnetic survey systems and methods with rotation-corrected motion compensation
    • 具有旋转校正运动补偿的电磁测量系统和方法
    • US20110279120A1
    • 2011-11-17
    • US12800276
    • 2010-05-12
    • Gustav Göran Mattias SüdowUlf Peter LindqvistAndras Robert JuhaszCarl Joel Gustav Skogman
    • Gustav Göran Mattias SüdowUlf Peter LindqvistAndras Robert JuhaszCarl Joel Gustav Skogman
    • G01V3/00G01R33/025
    • G01R33/025G01V1/3835
    • A disclosed electromagnetic survey system includes one or more streamer(s) having multiple electromagnetic sensors and motion sensing units. Each motion sensing unit has one or more accelerometer(s) to measure motion perpendicular to an axis of the streamer, and a rotation sensor to measure rotation about the axis. The measurements of the accelerometer are adjusted based on measurements from the rotation sensor. The survey system also includes one or more processor(s) that determine, for each electromagnetic sensor, a motion signal based on the adjusted measurements. A described electromagnetic survey method includes processing acceleration and rotational motion measurements to obtain an orientation of motion sensing units as a function of time. The measured acceleration is manipulated based on the orientation to obtain one or more velocity signal(s) for each motion sensing unit. Interpolation is performed on the velocity signals to determine at least one velocity signal for each electromagnetic sensor.
    • 所公开的电磁勘测系统包括具有多个电磁传感器和运动检测单元的一个或多个拖缆。 每个运动感测单元具有一个或多个加速度计,用于测量垂直于拖缆轴线的运动,以及一个旋转传感器来测量围绕该轴线的旋转。 基于来自旋转传感器的测量值来调节加速度计的测量值。 调查系统还包括一个或多个处理器,其针对每个电磁传感器确定基于经调整的测量值的运动信号。 所描述的电磁勘测方法包括处理加速度和旋转运动测量以获得作为时间的函数的运动感测单元的取向。 所测量的加速度基于取向被操纵以获得每个运动感测单元的一个或多个速度信号。 对速度信号进行插值,以确定每个电磁传感器的至少一个速度信号。