Method and rotating laser for determining an item of attitude information of at least one object
AssigneeLeica Geosystems AG
InventorPeter A. Stegmaier
Life of this patent
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Abstract
The invention relates to both a method for determining the horizontal position of an object which is to be oriented toward a height reference plane in a highly precise manner; while using at least one rotating laser, as well as to the rotating laser itself. The rotating laser comprises a rotating unit, a laser source for emitting a laser radiation into a rotating, horizontal direction of emission, and means for affecting at least one radiation parameter of the laser radiation with an item of angle-dependent information from which the direction of emission can be derived so that the direction of emission is associated with the direction from the rotating laser toward the object that receives the laser radiation.
Claims11
A method for determining an item of horizontal attitude information of at least one object to be oriented highly precisely with respect to a height reference surface using at least one rotating laser, comprising a rotating unit and a laser source for emission of laser radiation substantially parallel in the vertical direction in a rotating, horizontal emission direction, so that the laser radiation defines a highly precise height reference surface for the object, the laser radiation carrying an item of angle-dependent information from which the emission direction can be derived, so that the emission direction is associated with the direction of the rotating laser to the object which receives the laser radiation, comprising the acts:
- emission of the laser radiation by the rotating laser;
- first reception of the laser radiation by a first detector of the object;
- second reception of the laser radiation at the object in a defined horizontal position away from the position during the first reception of the laser radiation;
- height orientation of at least one component of the object with the laser radiation;
- derivation of a first emission direction of the laser radiation received by the first detector during the first reception and derivation of a second emission direction of the laser radiation received during the second reception, the derivation being effected at least once from the angle-dependent information;
- and
- derivation of the distance or horizontal position of the object relative to the position of the rotating laser from a knowledge of the first emission direction, of the second emission direction, and of the positional difference during the second reception relative to the first reception;
- wherein:
- the second reception of the laser radiation is effected by the first detector;
- in a preceding act to the second reception, a defined change in the position of the first detector of the object relative to its position during the first reception of the laser radiation to a changed position a defined horizontal distance away takes place;
- and
- the derivation of the distance or horizontal position of the object relative to the position of the rotating laser is effected from a knowledge of the first emission direction, of the second emission direction and of the defined change in the position of the first detector between the first reception, and the second reception.
A method for determining an item of horizontal attitude information of at least one object to be oriented highly precisely with respect to a height reference surface using at least one rotating laser, comprising a rotating unit and a laser source for emission of laser radiation substantially parallel in the vertical direction in a rotating, horizontal emission direction, so that the laser radiation defines a highly precise height reference surface for the object, the laser radiation carrying an item of angle-dependent information from which the emission direction can be derived, so that the emission direction is associated with the direction of the rotating laser to the object which receives the laser radiation, comprising the acts:
- emission of the laser radiation by the rotating laser;
- first reception of the laser radiation by a first detector of the object;
- second reception of the laser radiation at the object in a defined horizontal position away from the position during the first reception of the laser radiation;
- height orientation of at least one component of the object with the laser radiation;
- derivation of a first emission direction of the laser radiation received by the first detector during the first reception and derivation of a second emission direction of the laser radiation received during the second reception, the derivation being effected at least once from the angle-dependent information;
- derivation of the distance or horizontal position of the object relative to the position of the rotating laser from a knowledge of the first emission direction, of the second emission direction, and of the positional difference during the second reception relative to the first reception;
- reception of the laser radiation of a further rotating laser a distance away from the rotating laser via the first detector of the object;
- derivation of a further emission direction of the laser radiation of the further rotating laser received by the first detector;
- and
- derivation of the horizontal position of the object relative to the two rotating lasers from a knowledge of the first emission direction, of the further emission direction and of the positions of the two rotating lasers.
A rotating laser for the emission of laser radiation in
- a rotating emission direction, comprising:
- a laser source for producing the laser radiation;
- a rotating unit for producing a rotational movement, the rotating unit having an operative connection to the laser source such that the emission of the laser radiation is effected in the rotating emission direction;
- and
- means for associating at least one radiation parameter of the laser radiation with an item of angle-dependent information from which the emission direction are capable of being derived, wherein the means for associating at least one radiation parameter includes:
- at least one annular optical filter or polarizer which surrounds the centre of rotation of the rotating emission direction so that the laser radiation passes through the filter or polarizer with influencing of at least one radiation parameter, the filter or the polarizer having continuously differing optical properties at least in one segment along its annular circumference so that the emission direction is capable of being derived from the influence on the at least one radiation parameter.
Dependencies are inferred from the claim text.