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1. 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。

2. 发明授权

US5359889A Vertical position aided inertial navigation system 失效
标题翻译：垂直位置辅助惯性导航系统
公开(公告)号：US5359889A
公开(公告)日：1994-11-01
申请号：US26570
申请日：1993-03-05
申请人： Albert Jircitano , Daniel E. Dosch
发明人： Albert Jircitano , Daniel E. Dosch
IPC分类号： G01C21/16 , G01C21/00
CPC分类号： G01C21/16
摘要： A vertical position and gravity map aided INS is self contained (no external signals required); covert (no signals emanated); unrestricted in operating area; able to operate in quiet or active gravity regions; and able to be configured with proven instruments.
摘要翻译：垂直位置和重力图辅助INS是独立的（无需外部信号）; 隐蔽（没有信号发出）; 操作区无限制; 能够在安静或活跃的重力区域运行; 并能够配置成熟的仪器。

3. 发明授权

US5339684A Gravity aided inertial navigation system 失效
标题翻译：重力辅助惯性导航系统
公开(公告)号：US5339684A
公开(公告)日：1994-08-23
申请号：US805544
申请日：1991-12-10
申请人： Albert Jircitano , Daniel E. Dosch
发明人： Albert Jircitano , Daniel E. Dosch
IPC分类号： G01C21/16 , G01C21/20 , G01C21/24 , G06G7/78
CPC分类号： G01C21/16
摘要： An autonomous covert Inertial Navigation System uniquely suited for underwater applications wherein Schuler and siderial errors are bounded without external navigation aids or active instrumentation of ground speed is achieved by integrating a conventional Inertial Navigation System with a gravity gradiometer capable of measuring gravity field components independently of platform accelerations.
摘要翻译：一种独特的隐蔽惯性导航系统，其独特的适用于水下应用，其中Schuler和siderial误差是无外部的导航辅助或有效的地面速度的仪器仪表，是通过将传统的惯性导航系统与能够独立于平台测量重力场分量的重力梯度计加速度。

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