摘要:
Some embodiments of the invention include a vehicle control system having: two GNSS receivers positioned fixedly in a known relationship with respect to one another on a vehicle, for receiving signals from navigation satellites, a computer unit for using the signals to form direction vectors, and generating instructions for steering the vehicle as a function of the direction vectors, wherein at least one retro-reflector is arranged in a predefined position with respect to the GNSS receivers on the vehicle, a geodetic measuring device is positioned in an immovable fashion at a known reference position in order to determine exact absolute positions of the retro-reflector, wherein the measuring device has a transmitter for transmitting the exact absolute positions to a receiver of the computer unit, and the computer unit is also designed to generate the instructions as a function of the exact absolute positions.
摘要:
A method may include projecting, onto a first projection plane of a first projection volume, first points from a point cloud of a setting that are within the first projection volume. Further, the method may include matching a plurality of the projected first points with a cross-section template that corresponds to a line parametric object (LPO) of the setting to determine a plurality of first element points of a first primary projected element. Additionally, the method may include projecting, onto a second projection plane of a second projection volume, second points from the point cloud that are within the second projection volume and matching a plurality of the projected second points with the cross-section template to determine a plurality of second element points of a second primary projected element. Moreover, the method may include generating a parameter function based on the first element points and the second element points.
摘要:
Some embodiments of the invention relate to a laser tracker for determining the position of a target, comprising a beam source for generating measurement radiation; a base; a beam deflection unit which can pivot with respect to the base −4° C. about two axes in a motorized manner, for the emission and alignment of the measurement radiation and to capture at least one part of the measurement radiation reflected onto the target; a first position-sensitive surface detector and an evaluation and control unit for determining a point of impact of the reflected measurement on the surface detector for generating an output signal in order to determine the position of said target. Said laser tracker also comprises a calibration device for use with a self calibrating function to determine the calibration parameters thereof with respect to a position and/or direction of the measurement radiation.
摘要:
Method for precisely determining the position offset and orientation offset of a second deployment relative to a first deployment in the same measurement environment of a geodetic surveying device, in particular a total station or a theodolite, on the basis of directions, determined on the basis of the image, and at least one distance, measured by laser-optical means, to measurement environment points, which are imaged both in a second and in a first environment image.
摘要:
A laser imaging, detection, and ranging (LIDAR) system may include a scanner and a compression module. The scanner may be configured to generate a scan including multiple range values associated with multiple scan points of the scan. The compression module may be configured to map multiple range values to multiple integers. The multiple integers may represent multiple range intervals. The multiple range intervals may include multiple differently sized range intervals. The size of the range intervals may be a function of range according to an interval size function.
摘要:
A co-located global navigation satellite system (GNSS) antenna (40) and beamforming antenna (20), where the phase centres of the two antennae are co-located in at least one axis, preferably the vertical axis. Differences in the phase centre locations can be compensated using, for example, orientation and/or sensor data.
摘要:
Some embodiment include a handheld distance measuring device having a laser distance meter for measuring distances to target points in an environment and an image acquisition unit for acquiring images of the environment, characterized by a control unit having program code for controlling a spatial modeling functionality having a measurement sequence, in the scope of which images of a region of the environment are acquired from different positions of the distance measuring device, these images having a shared image region, wherein the image acquisition unit assumes different, which represent the respective position and alignment of the distance measuring device, during the acquisition of the first image and the second image.
摘要:
Some embodiments described herein include a laser tracker for continuously tracking a reflective target and for determining the distance with respect to the target. The laser tracker may include beam directing unit for emitting a measurement radiation and for receiving at least part of the measurement radiation reflected at the target. The laser tracker additionally comprises an interferometer for determining a change in distance with respect to the target. A control and evaluation unit is designed in such a way that an interferometer wavelength of the measurement radiation is determined by defined sample measurements being carried out with variation of the distance with respect to the target, wherein the sample measurements are effected for at least two different distances with respect to the target, the measurement radiation is constantly oriented towards the target and with the interferometer wavelength being kept stable.
摘要:
Some embodiments include determining geometrical data in a space, with a measurement sequence having a measurement of a first distance to a first target point by emitting a laser beam in a first emission direction, and a measurement of a second distance to a second target point by emitting a laser beam in a second emission direction. In some embodiments the geometrical data comprises a distance between the two target points and/or a solid angle between the first emission direction and the second emission direction. Some embodiments include detecting a series of images; relating the detected images to one another using image processing and using the at least one common image area; determining a distance between the mappings of the target points in the images put in relationship with one another; and determining the geometrical data on the basis of the distance between the mappings.
摘要:
An electro-optic modulator includes a waveguide of a nonlinear optical material and an electrode line for generating an electrical field in a modulating region of the waveguide when a voltage is applied to the electrode line, thereby modulating light passing through the waveguide. Therein, the forward electro-optic response of the modulating region is the same as the backward electro-optic response; and the electro-optic response has a band-pass or a low-pass characteristic. A distance measuring device includes a light source emitting light, and such an electro-optic modulator arranged such that the emitted light passes through the electro-optic modulator in a first direction before being emitted from the distance measuring device, and after being reflected from a target passes through the electro-optic modulator in a second direction which is opposite to the first direction.