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68 条记录 (耗时 0.012 秒)

    Ball-Loading Device For Fee Fall Experiment
    1.
    发明公开
    Ball-Loading Device For Fee Fall Experiment 审中-公开

    公开(公告)号：US20240295671A1

    公开(公告)日：2024-09-05

    申请号：US18276949

    申请日：2022-09-26

    申请人： NATIONAL UNIVERSITY OF DEFENSE TECHNOLOGY

    发明人： Haobin ZHENG ,  Jian LUO ,  Yangjianming OU ,  Gang PENG ,  Yong WANG ,  Weimeng SUN ,  Zhenyu PENG ,  Liansheng MENG

    IPC分类号： G01V7/02 ,  G01V7/14

    CPC分类号： G01V7/02 ,  G01V7/14

    摘要： The ball-loading device for free-fall experiments includes an inlet tube and a shell. The first end of the shell is connected to the inlet tube, and the shell has a ball channel. A ball outlet is located at the second end of the shell, with the first end of the inlet shell positioned higher than the second end. Additionally, a bracket is rotatably connected to the shell and has a first blocking part and a second blocking part. As the bracket rotates around the shell, the first blocking part is switched to block the ball outlet, or the second blocking part is switched to block the ball channel. This device provided by the present disclosure allows automatic loading and resetting of the balls used in free fall experiments, thereby improving experimental efficiency.

    Matter-wave gravimeter with microwave separation at the magic field
    2.
    发明授权
    Matter-wave gravimeter with microwave separation at the magic field 有权

    公开(公告)号：US09791593B2

    公开(公告)日：2017-10-17

    申请号：US14704556

    申请日：2015-05-05

    申请人： THALES

    发明人： Mahdi Ammar ,  Sylvain Schwartz ,  Landry Huet

    IPC分类号： G01V7/02 ,  G01V7/00

    CPC分类号： G01V7/02 ,  G01V7/00

    摘要： The general field of the invention is that of matter-wave gravimeters. The gravimeter according to the invention comprises at least: means for generating, for capturing and for cooling a cloud of ultra-cold atoms; means of transferring the atoms into a superposition, with equal weights, of a first internal electronic state called state |1>) and of a second internal electronic state called state |2> comprising the application of at least a first microwave field and of a radiofrequency field; means for separating the atoms into two wave packets for a given period of time under the effect of at least a second microwave field, the said separation leading to a phase-shift associated with the local gravitational field; calibration means allowing a “magic” magnetostatic field to be determined for which the difference in energy between the first internal electronic state and the second internal electronic state is independent, to a first order, of the fluctuations of the magnetostatic field.

    Floated gravity gradiometer and method
    3.
    发明授权
    Floated gravity gradiometer and method 失效
    浮式重力梯度仪及方法

    公开(公告)号：US4955232A

    公开(公告)日：1990-09-11

    申请号：US359454

    申请日：1989-05-31

    申请人： Theodore V. Lautzenhiser ,  Melvin Eisner

    发明人： Theodore V. Lautzenhiser ,  Melvin Eisner

    IPC分类号： G01V7/02

    CPC分类号： G01V7/02

    摘要： An apparatus and method for measuring the vertical gradient of the vertical gravitational field using a gravity gradiometer comprising a housing containing a fluid, a float buoyantly supported within the fluid, mechanism for varying the metacentric height of the float, and apparatus for obtaining a measure of the gravitational gradient acting on the float resulting from varying the metacentric height.

    摘要翻译： 一种用于使用重力梯度计测量垂直重力场的垂直梯度的装置和方法，所述重力梯度计包括包含流体的壳体，浮动地支撑在流体内的浮子，用于改变浮子的中心高度的机构，以及用于获得 作用在浮子上的重力梯度由于改变中心高度而产生。

    SYSTEM AND METHOD FOR GRAVIMETRY WITHOUT USE OF AN INERTIAL REFERENCE
    10.
    发明申请
    SYSTEM AND METHOD FOR GRAVIMETRY WITHOUT USE OF AN INERTIAL REFERENCE 审中-公开
    没有使用惯性参考的GRAVIMETRY的系统和方法

    公开(公告)号：US20160041300A1

    公开(公告)日：2016-02-11

    申请号：US14454468

    申请日：2014-08-07

    申请人： Lockheed Martin Corporation

    发明人： Thomas J. Meyer

    IPC分类号： G01V7/02

    CPC分类号： G01V7/02 ,  G01V7/16

    摘要： A gravimeter for measuring the gravitational field of the Earth without an inertial reference comprises accelerometer pairs disposed on a platform where the sensitive axis of each accelerometer is arranged on the platform to measure plumb gravity. At least one accelerometer pair is spatially configured to define a baseline therebetween. The gravimeter is positioned so that the baseline is maintained parallel to a linear survey path. Each accelerometer outputs a signal representative of the sum total of the accelerations detected, including accelerations due to gravity and kinematic accelerations of the host vehicle and mounting structure. A processor subtracts the accelerometer pair outputs for common-mode rejection determination of a down gravity gradient and combines with a direct plumb gravity measurement to obtain an enhanced gravity data output that is not subject to frequency limits attributed to the performance limitations of inertial reference devices.

    摘要翻译： 用于测量没有惯性参考的地球的重力场的重力仪包括设置在平台上的加速度计对，其中每个加速度计的灵敏轴被布置在平台上以测量铅垂重力。 至少一个加速度计对在空间上被配置为在其间限定基线。 重力仪被定位成使得基线保持平行于线性测量路径。 每个加速度计输出表示所检测的加速度的总和的信号，包括由于主车辆和安装结构的重力和运动学加速度引起的加速度。 一个处理器减去加速度计对输出，用于下行重力梯度的共模抑制确定，并与直接铅锤重力测量相结合，以获得不受惯性参考装置性能限制的频率限制的增强重力数据输出。