Method and device for determining spatial positions and orientations
Номер патента: AU5800000A
Опубликовано: 19-02-2001
Автор(ы): Albert Markendorf, Raimund Loser
Принадлежит: LEICA GEOSYSTEMS AG
Опубликовано: 19-02-2001
Автор(ы): Albert Markendorf, Raimund Loser
Принадлежит: LEICA GEOSYSTEMS AG
Реферат: Using a laser-tracker (1) with an interferometer together with a retroreflector (3) in the form of a triple prism or a triple mirror arranged on an object and designed for parallel reflection of the laser beam (5) directed to the reflector (3), the position of the object is computed by way of measurement data with respect to the direction of the laser beam (5) and its path length. Additionally the spacial orientation of the object (2) is determined by producing additional measurement data with respect to the angle of incidence (alpha) of the laser beam into the reflector (3) and/or with respect to an adjustable orientation of the reflector (3) relative to the object (2) and by computing the position and spacial orientation of the object (2) by way of measurement data with respect to the direction and the path length of the laser beam (5) and by way of this additional measurement data. Thereby the measurement data of the direction measurement and of the interferometric measurement may be corrected by way of the additional measurement data with respect to the angle of incidence (alpha) such eliminating their dependency on the angle of incidence. For determining the angle of incidence (alpha), the reflector (3) is designed in a manner such that a central part of the laser beam (5) passes through the reflector (3) unreflected and behind the reflector (3) impinges a position sensor (12) arranged stationarily relative to the reflector, while a peripheral part of the laser beam (5) is reflected parallel and used for the interferometric measurement.
Method and dual frequency lidar system for determining distance and velocity of target
Номер патента: CA3058331A1. Автор: Jose Azana,Daniel ONORI. Владелец: Institut National de La Recherche Scientifique INRS. Дата публикации: 2021-04-09.