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21. 发明授权

US6073077A Method for determining gravity in an inertial navigation system 失效
标题翻译：用于确定惯性导航系统中重力的方法
公开(公告)号：US6073077A
公开(公告)日：2000-06-06
申请号：US120624
申请日：1998-07-22
申请人： David Y. Hsu
发明人： David Y. Hsu
IPC分类号： G01C21/00 , G01V7/16 , G01S3/02 , G06G7/78
CPC分类号： G01C21/00 , G01V7/16
摘要： The invention is a method for determining gravity in an inertial navigation system which periodically produces and stores in memory position coordinates. The method comprises the steps of (a) retrieving the most recently determined position coordinates, (b) determining coordinates L.sub.u, L.sub.n, H.sub.u, and H.sub.n from the position coordinates, L.sub.u and L.sub.n being predetermined functions of geodetic latitude and H.sub.u and H.sub.n being predetermined functions of geodetic altitude, (c) determining the vertical component of gravity by substituting either or both L.sub.u and H.sub.u in a first polynomial expression, (d) determining the north-south component of gravity by substituting either or both L.sub.n and H.sub.n in a second polynomial expression, and (e) utilizing the components of gravity determined in steps (c) and (d) in the next determination of the position coordinates.
摘要翻译：本发明是一种在周期性地产生和存储在存储位置坐标中的惯性导航系统中确定重力的方法。该方法包括以下步骤：（a）检索最近确定的位置坐标，（b）从位置坐标确定坐标Lu，Ln，Hu和Hn，Lu和Ln是大地纬度的预定函数，Hu和Hn是预定的大地测量高度的函数，（c）通过在第一个多项式表达式中替换Lu和Hu中的任一个或两个来确定重力的垂直分量，（d）通过在第二个中替换Ln和Hn中的任一个或两个来确定重力的南北分量多项式表达式，（e）在下一次确定位置坐标时利用步骤（c）和（d）中确定的重力分量。

22. 发明授权

US5402340A Gradiometer based terrain estimation 失效
标题翻译：基于Gradiometer的地形估计
公开(公告)号：US5402340A
公开(公告)日：1995-03-28
申请号：US236955
申请日：1994-05-02
申请人： John S. White , Albert Jircitano
发明人： John S. White , Albert Jircitano
IPC分类号： G01C21/00 , G01V7/16 , G06F19/00
CPC分类号： G01C21/005 , G01V7/16
摘要： A terrain estimation system and procedure in which prior knowledge of terrain configuration is taken as a starting point in the estimation procedure. The gravity field of the earth is sensed by a gradiometer which measures the gravity gradient as the gradiometer is transported by a moving platform past the earth's surface to obtain data of the topology of the earth's surface and of the geology of the terrain including subterranean oil and iron deposits. Optimal filter means, operative in response to a statistical model of terrain and residual geology predict values of gravity gradient to be sensed by said gradiometer at successive locations along a path of travel. Comparison is made between measured and predicted values of gravity gradient to update terrain altitude data by nulling a difference between measured values and predicted values of gravity gradient. Terrain surface is represented by the sum of a finite series of shells developed as cross covariance terms in a statistical mathematical model of terrain and residual geology. Each shell has a three-dimensional surface. A point on the surface of a shell is described by three parameters, namely the height of the point above a reference surface, north slope and east slope. A summation of shells of differing spatial frequency, such as a series of approximately one half dozen shells, provides for a smooth surface which represents the terrain at each of many points on the earth's surface.
摘要翻译：将地形构造的先验知识作为估算过程的起点的地形估计系统和程序。地球的重力场由梯度计测量，该梯度仪测量重力梯度，因为梯度计通过移动平台通过地球表面运输，以获得地球表面拓扑结构和包括地下油的地形地质学数据，铁矿床。最佳过滤器装置，响应于地形和残留地质学的统计模型而工作，预测在沿着行进路径的连续位置处由所述梯度计感测的重力梯度值。比较重力梯度的测量值和预测值，通过舍弃测量值与重力梯度预测值之间的差值来更新地形高度数据。地形表面由在地形和残余地质学统计数学模型中作为交叉协方差项开发的有限系列的壳的总和表示。每个壳都有三维表面。壳体表面的一个点由三个参数描述，即参考面上方的点的高度，北坡和东坡。不同空间频率的贝壳的总和，如一系列大约六分之一的壳，提供了一个平滑的表面，其表示地球表面上的许多点的每个地形。

23. 发明授权

US4435981A Airborne gravity surveying 失效
标题翻译：机载重力测量
公开(公告)号：US4435981A
公开(公告)日：1984-03-13
申请号：US309906
申请日：1981-10-09
申请人： Franklin D. Carson , William R. Gumert
发明人： Franklin D. Carson , William R. Gumert
IPC分类号： G01V7/16
CPC分类号： G01V7/16
摘要： Method and apparatus are disclosed for airborne gravity surveying in which the airborne vehicle is stabilized with respect to speed, direction of heading and altitude, and in which the gravity meter has adequate sensitivity and signals that are recorded at a high sample rate on a magnetic tape, in which the aircraft position is computed using a multi-range navigation system that is located geodetically.
摘要翻译：公开了一种用于空中重力测量的方法和装置，其中，空中车辆相对于速度，航向方向和高度稳定，并且其中重力计具有足够的灵敏度和以高采样率记录在磁带上的信号，其中使用位于地质上的多范围导航系统来计算飞机位置。

24. 发明授权

US3633003A Off-leveling computer 失效
标题翻译：离线电脑
公开(公告)号：US3633003A
公开(公告)日：1972-01-04
申请号：US3633003D
申请日：1970-02-11
申请人： US NAVY
发明人： TALWANI MANIK
IPC分类号： G01V7/16 , G06G7/78 , G01C19/54
CPC分类号： G01V7/16 , G06G7/78 , Y10T74/12 , Y10T74/1229 , Y10T74/1232
摘要： This invention describes an off-leveling computer which continuously corrects for the error induced in sea gravimetry measurements because the gravimeter measuring axis is not aligned with the local vertical at all times. The apparatus computes the error in the measurement of the local gravitational acceleration due to off-leveling of a stable platform on which the gravimeter is mounted by first determining the sum of the angular positioning errors induced by the servo loop and the gyro erection system. It then computes the component of the horizontal acceleration which, by virtue of this error in verticality, is along the gravimeter measuring axis. This computed signal is then subtracted from the gravimeter signal to eliminate errors in the measurement of gravitational acceleration due to the misalignment of the gravimeter with the local vertical.
摘要翻译：本发明描述了由于重力计测量轴始终不与局部垂直线对齐而在海重测量测量中连续校正误差的脱水计算机。该装置通过首先确定由伺服回路和陀螺仪架设系统引起的角度定位误差的总和，计算由于安装有重力仪的稳定平台的平整而导致的局部重力加速度的测量误差。然后，它计算水平加速度的分量，由于这种垂直度的误差，沿着重力计测量轴。然后从重力仪信号中减去该计算的信号，以消除由于重力仪与局部垂直度的不对准而引起的重力加速度的测量误差。

25. 发明授权

US3610900A Crosscoupling computer 失效
标题翻译： CROSSCOUPLING计算机
公开(公告)号：US3610900A
公开(公告)日：1971-10-05
申请号：US3610900D
申请日：1969-11-24
申请人： US NAVY
发明人： TALWANI MANIK
IPC分类号： G01V7/16 , G06G7/48 , G06G7/78 , G01M1/12
CPC分类号： G01V7/16 , G06G7/48 , G06G7/78
摘要： A crosscoupling computer is disclosed which generates a signal that is subtracted from the output of a highly damped beam gravimeter to eliminate the crosscoupling acceleration errors introduced into the gravity measuring system by horizontal forces acting on the beam. In gravity measurements made at sea, these forces are produced by the motion of the ship in which the gravimeter is mounted.

26. 发明授权

US3073165A Gravimeter 失效
标题翻译：重力仪
公开(公告)号：US3073165A
公开(公告)日：1963-01-15
申请号：US75466358
申请日：1958-08-12
申请人： NORTH AMERICAN AVIATION INC
发明人： SLATER JOHN M , WILCOX DOYLE E , PONDROM WALTER L
IPC分类号： G01C19/38 , G01V7/16
CPC分类号： G01V7/16 , G01C19/38

27. 发明授权

US3011346A Apparatus for gravity gradient surveying 失效
标题翻译：重力梯度测量装置
公开(公告)号：US3011346A
公开(公告)日：1961-12-05
申请号：US67123057
申请日：1957-07-11
申请人： CALIFORNIA RESEARCH CORP
发明人： GARVIN WALTER W
IPC分类号： G01V7/16
CPC分类号： G01V7/16 , Y10T74/1218

28. 发明授权

US2626525A Apparatus for aerogravimetric prospecting 失效
标题翻译：航空重度勘探设备
公开(公告)号：US2626525A
公开(公告)日：1953-01-27
申请号：US68190746
申请日：1946-07-08
申请人： HEILAND CARL A
发明人： HEILAND CARL A
IPC分类号： G01V7/16
CPC分类号： G01V7/16

29. 发明授权

US10078152B2 Gravity transducer system and method including junctions with a first metal and a second metal 有权
公开(公告)号：US10078152B2
公开(公告)日：2018-09-18
申请号：US15727157
申请日：2017-10-06
申请人： NXT Energy Solutions, Inc.
发明人： George Liszicasz , Xiang Gui
IPC分类号： G01V11/00 , G01V7/00 , G01V7/16 , G01V7/06
CPC分类号： G01V7/005 , G01V7/06 , G01V7/16
摘要： An airborne gravity-based transducer is disclosed as two embodiments with similar physical structures but different operating principles. The first design includes a particle acting as an active interface characterized by internal vibrations relating to its de Broglie wave, a resonant cavity for trapping the particle, and a phonon-wave source wherein the de Broglie and phonon waves interact over a junction area. In the second design, mechanical displacements between the transducer elements can be monitored through electromechanical transduction.

30. 发明授权

US09891341B2 Gravity gradiometer system with spherical air bearing based platform 有权
公开(公告)号：US09891341B2
公开(公告)日：2018-02-13
申请号：US14147899
申请日：2014-01-06
申请人： Lockheed Martin Corporation
发明人： Thomas J. Meyer
IPC分类号： G01V7/16 , G01V7/08 , F16C32/06 , G01V7/04
CPC分类号： G01V7/16 , F16C32/0614 , F16C32/0696 , F16C2370/00 , G01V7/04 , G01V7/08
摘要： A non-contacting spherical air bearing-based stable platform for use by a gravity gradiometer instrument (GGI) is provided by attaching a spherical ball-shaped bearing to a rotational stage of the GGI and integrating a concave spherical cup in the linear stage and mounting base assembly of the GGI which is fixedly attached to a host vehicle or platform. The spherical cup supports the spherical ball-shaped bearing on a thin cushion of air provided by a source of compressed air or gas at the concave surface of the spherical cup. The spherical ball-shaped bearing is supported, providing three degrees of rotational freedom of motion without the need for slip rings, flex capsules, races, or mechanical bearings, thereby reducing or eliminating gradient disturbance signals owing to parasitic torques and jitter in the output of the accelerometers of the GGI.

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