Method for determining the distance of an object by means of a polarization-modulated transmission light beam

In a method of determining the distance of an object (10), a polarization-modulated transmission light beam (LS) is reflected at the object (10) and is received as a reception light beam (LE) by a polarization analyzer, and the output signal thereof is fed to an evaluation unit (A) for determining t...

Full description

Saved in:
Bibliographic Details
Main Author Fendt, Guenter Anton
Format Patent
LanguageEnglish
Published 15.05.2018
Subjects
ANALOGOUS ARRANGEMENTS USING OTHER WAVES
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
GYROSCOPIC INSTRUMENTS
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
MEASURING DISTANCES, LEVELS OR BEARINGS
NAVIGATION
PHOTOGRAMMETRY OR VIDEOGRAMMETRY
PHYSICS
RADIO DIRECTION-FINDING
RADIO NAVIGATION
SURVEYING
TESTING
Online AccessGet full text

Cover

More Information
Summary:In a method of determining the distance of an object (10), a polarization-modulated transmission light beam (LS) is reflected at the object (10) and is received as a reception light beam (LE) by a polarization analyzer, and the output signal thereof is fed to an evaluation unit (A) for determining the distance. The polarization-modulated transmission light beam (LS) is generated by at least two light sources (D1, D2, D3) which emit differently polarized light beams (L1, L2, L3), wherein the light sources (D1, D2, D3) are each respectively operated with a distinct defined mark-space pattern (M1, M2, M3, M4, M5, M6). The polarization analyzer has polarization filters (P1, P2, P3) corresponding at least to the number of light sources. The respective polarization plane of each one of the polarization filters is correspondingly adapted to a respective polarization plane (E1, E2, E3) of the light beams (L1, L2, L3).
Bibliography:Application Number: US201414904492