公开(公告)号：US06545751B2

公开(公告)日：2003-04-08

申请号：US09791736

申请日：2001-02-26

申请人： Sean Beliveau ,  Edward R. Barrientos ,  Yvan Beliveau ,  Thomas M. Hedges ,  Eric J. Lundberg ,  Edmund S. Pendleton ,  Timothy Pratt ,  Rick Slater ,  Michael J. Sobel

发明人： Sean Beliveau ,  Edward R. Barrientos ,  Yvan Beliveau ,  Thomas M. Hedges ,  Eric J. Lundberg ,  Edmund S. Pendleton ,  Timothy Pratt ,  Rick Slater ,  Michael J. Sobel

IPC分类号： G01B1126

CPC分类号： G01S5/16 ,  G01C15/002 ,  G01S1/70

摘要： An improved low cost theodolite position measurement system and process which is particularly useful in enabling a single operator to conveniently set up the system and calculate elevation (el) and azimuth (az) angle data. Only a single optical transmitter is positioned within a predetermined workspace thus significantly decreasing equipment costs and setup time. The single transmitter is positioned and leveled at a predetermined point in the workspace. In operation the single rotatably mounted transmitter head illuminates the workspace volume with a pair of spaced apart precalibrated fan beams which sweep the space and a periodically emitted reference strobe pulse. At least one optical receiver is selectively positionable within said workspace so that during each revolution of said single transmitter head said receiver receives a first position strike and a second position strike of said fan beams. To determine elevation angle data, tracker logic means responsive to said receiver determines a first tie interval separation between receiving said first position strike and said second position strike and calculation means for converting said first time separation interval into an elevation angle data. To determine an azimuth angle data said receiver receives a strobe pulse and a fan beam position strike, both of which are repeatedly transmitted with a known periodicity, determining a measure of time separation related to the strobe pulse and the position strike, and converting the measure of time separation into the azimuth angle data utilizing the known periodicity.

公开(公告)号：US06662103B1

公开(公告)日：2003-12-09

申请号：US09532026

申请日：2000-03-21

申请人： Jeffrey F. Skolnick ,  Edward R. Barrientos ,  Sean M. Beliveau ,  Thomas M. Hedges ,  Eric J. Lundberg ,  Edmund S. Pendleton ,  Roger Wells

发明人： Jeffrey F. Skolnick ,  Edward R. Barrientos ,  Sean M. Beliveau ,  Thomas M. Hedges ,  Eric J. Lundberg ,  Edmund S. Pendleton ,  Roger Wells

IPC分类号： G01C2126

CPC分类号： G06Q10/08 ,  G01C15/00 ,  G01C15/002 ,  G01S1/54 ,  G01S1/70 ,  G01S5/16

摘要： A method and system allows conversion of three-dimensional data from a default coordinate frame to an arbitrary user-selected coordinate frame. The method includes obtaining position data in a default coordinate frame and transforming the data into an alternate coordinate frame defined by the user. The alternate coordinate frame can be defined by allowing the user to select a plane, an origin, and an axis, using any desired coordinate system and in any desired orientation. The transformed data allows presentation of position measurements in a form that is relevant to the user's specific application.

摘要翻译： 方法和系统允许将三维数据从默认坐标系转换为任意用户选择的坐标系。 该方法包括在默认坐标系中获取位置数据，并将数据变换为由用户定义的备用坐标系。 可以通过允许用户使用任何所需的坐标系和任何期望的方向来选择平面，原点和轴来定义替代坐标系。 转换的数据允许以与用户的具体应用相关的形式呈现位置测量。