Abstract: Device for laser surveying of an environment A device for surveying an environment by time-of-flight measurement of laser beams reflected therefrom comprises a beam deflection device having at least one mirror surface which can be rotated or oscillated about an axis of rotation which is non-normal to the mirror surface. The device further comprises a first laser transmitter with associated first laser receiver, and a second laser transmitter with associated second laser receiver. The transmission and reception directions of the first and second laser transmitters and receivers lie parallel to one another in pairs and at different angles to the axis of rotation. The first laser receiver is spaced apart from the first laser transmitter and the second laser receiver is spaced apart from the second laser transmitter, in each case in the direction of the axis of rotation.

Abstract: A laser scanner for scanning of an environment, comprising a laser transmitter for transmitting a transmission beam, a laser receiver for receiving the transmission beam reflected by the environment as a receive beam, a beam-deflection device arranged in the beam path of the transmission and receive beams in the form of a mirror pyramid that is rotatable about a rotational axis, and an elongated housing comprising a bottom face, a top face, and a lateral shell which connects said faces, a window for the transmission and receive beams being in the bottom face, wherein the beam-deflection device is adjacent to the window and has a rotational axis oriented in parallel with the bottom face, the laser receiver being arranged close to the top face, and a deflecting mirror being arranged beside the bottom face and deflecting the receive beam from the beam-deflection device onto the laser receiver.

Abstract: An apparatus for surveying an environment comprises a first and at least one further scanning unit each for transmitting a pulse train of laser pulses over successive deflection periods at a pulse repetition rate, wherein the laser pulses falling in each deflection period form, per deflection period, a scanning fan which the laser pulses scan with a predeterminable angular velocity profile, and for receiving the associated laser pulses reflected by the environment. All the scanning fans overlap as seen in the direction of one of the scanning axes. The apparatus further comprises a control device connected to the at least one further scanning unit and configured to pivot the scanning fans of each further scanning unit relative to the scanning fans of an adjacent scanning unit by a pivot angle dependent on the pulse repetition rate and the angular velocity profile, in such a way that their sampling points do not coincide.

Abstract: An apparatus for surveying an environment comprises a first and at least one further scanning unit each for transmitting a laser beam over a series of deflection periods with a respective deflection period duration, which laser beam in each deflection period scans over a scanning fan and scans the environment along a scan line, wherein the scan lines of each scanning unit form a scan line group, and for receiving the associated laser beam reflected from the environment. The apparatus further comprises a control device connected to the at least one further scanning unit and configured to offset the scan line group of each further scanning unit with respect to the scan line group of an adjacent scanning unit in the direction of movement by a position offset which is dependent on the relative speed and the deflection period duration, in such a way that their sampling points coincide.

Abstract: The present invention relates to a laser scanner, comprising a housing, a laser transmitter including a transmission aperture for a transmission beam, a laser receiver for a reception beam, and a beam deflection device in the form of a mirror pyramid, the pyramid axis of which forms its axis of rotation, and the pyramid sides of which each form a mirror facet The laser transmitter and the laser receiver are each directed at the mirror pyramid parallel to the axis of rotation of the mirror pyramid. The laser receiver comprises at least one converging lens arranged downstream of the mirror pyramid in the reception beam path. The converging lens, viewed in the direction of the axis of rotation, in its region of overlap with the mirror facets, is at least as large, in area comparison, as twice the largest of all mirror facets viewed in the direction of the axis of rotation.

Abstract: An optical device for detecting a light beam reflected by a remote target comprises a light source, which is designed to emit the light beam in a predetermined direction at the remote target, and a primary lens, which is designed to focus the light beam reflected by the remote target into a first focal point. The optical device further comprises a relay lens system, which is arranged in such a way that the first focal point is located between the primary lens and the relay lens system and which is designed to focus the light beam reflected by the remote target and diverging starting from the first onto a second focal point. A detector unit is essentially arranged in the second focal point. A diaphragm is arranged within a cross-section, which is normal to the optical axis, of the light beam reflected by the remote target between the first focal point and the relay lens system.

Abstract: The present disclosed subject matter relates to a method for measuring the distance of targets in the surroundings by way of a time-of-flight measurement of pulses reflected at said targets, in particular laser pulses, said method comprising: emitting a sequence of transmission pulses having varying pulse intervals, and receiving at least one receive pulse after each one of two different transmission pulses; for each receive pulse: generating a group of M candidate distances, each based on a different transmission pulse among M transmission pulses preceding the receive pulse, wherein each candidate distance is assigned to the corresponding transmission pulse on which it is based; for each candidate distance: determining a weighting value on the basis of at least the closest of the candidate distances assigned to such a transmission pulse which is adjacent to the transmission pulse to which the candidate distance being considered in this determining process is assigned; for each group: selecting the candidate

Abstract: The disclosed subject matter relates to a method for generating an orthogonal view of an object in a surrounding area, comprising the following steps: creating a location-based first 3D point cloud over a predefined angular range around a first location by way of a laser scanner; representing the object in a computer-generated representation; selecting a view direction and a view boundary in the computer-generated representation; projecting the first 3D point cloud, or a derived first 3D point cloud derived therefrom, counter to the view direction onto a plane defined by the view boundary; and outputting the first 3D point cloud, or the derived first 3D point cloud, projected onto the plane within the view boundary as an orthogonal view.

Abstract: The disclosed subject matter relates to a method for generating an orthogonal view of an object in a surrounding area, comprising the following steps: creating a location-based first 3D point cloud over a predefined angular range around a first location by way of a laser scanner; representing the object in a computer-generated representation; selecting a view direction and a view boundary in the computer-generated representation; projecting the first 3D point cloud, or a derived first 3D point cloud derived therefrom, counter to the view direction onto a plane defined by the view boundary; and outputting the first 3D point cloud, or the derived first 3D point cloud, projected onto the plane within the view boundary as an orthogonal view.

Abstract: The disclosed subject matter relates to a laser scanner for scanning a ground from a seaborne or airborne vehicle, comprising a scanning unit for emitting a fan-shaped scan pattern made of laser beams fanned out about a scan axis and for receiving the laser beams reflected off the ground and an evaluation unit connected to the scanning unit for evaluating the laser beams that are received. The laser scanner is characterized by a measuring unit that is designed to measure the height of the vehicle above ground, and an actuation device that can be anchored to the vehicle and that is connected to the measuring unit. The actuation device is designed to rotate the fan-shaped scan pattern of the scanning unit with respect to the vehicle about a first actuation axis that is different from the scan axis, depending on the measured height above the ground.

Abstract: The present invention relates to a method for measuring the distance of targets in the surroundings by way of a time-of-flight measurement of pulses, in particular laser pulses, reflected at said targets, said pulses each being successively emitted at a transmission time in accordance with a predeterminable pulse repetition rate and said pulses, after the reflection thereof, each being received at a reception time, said method comprising the following steps: selecting a first pulse repetition rate from a set of at least two different pulse repetition rates and predetermining the selected pulse repetition rate for the emission, ascertaining a transmission time lying closest in time to the reception time of a reflected pulse and a time interval between these, and, if the ascertained time interval drops below a predetermined first threshold, selecting a second pulse repetition rate from the set and predetermining the second pulse repetition rate for the emission.

Abstract: The invention relates to a laser scanning device for mounting on the roof rack of a vehicle, comprising a base support, which is configured as an “X”, can be mounted on a roof rack and on which a laser scanning module that spans the fork of the “X” can be fixed.

Abstract: A method for measuring distances of targets by measuring the time of flight of pulses, in particular laser pulses, reflected on those targets, including the steps of; transmitting pulses having a pulse interval which varies according to a modulation signal as transmitted pulses, and concomitantly recording of reflected pulses as received pulses; determining a first series of distance measurement values from times of flight between transmitted pulses and those received pulses which are respectively received within a first time window following each transmitted pulse; determining at least a second series of distance measurement values from times of flight between transmitted pulses and those received pulses which are respectively received within a second time window following each transmitted pulse; and determining that series of distance measurement values which is least affected by the modulation signal as result of the distance measurement.

Abstract: Apparatus for measurement of the reception time of a pulse in a receiving system, which contains at least one receiving channel with a non-linear transmission response, which receiving channel produces at its output a received signal, having a memory, in which the received signals of reference pulses with a predetermined different amplitude are available as reference signals with respect to a time scale, and having an evaluation device, which is connected to the receiving system and to the memory and compares a received signal with each reference signal with a variant time offset in order to determine that reference signal and that time offset for which the comparison discrepancy is a minimum, and outputs this time offset as the reception time with respect to the time scale.