A system for precision displacement measurement based on a self-traceable grating interference includes a coherent light source, a photoelectric detection module, a self-traceable grating and a signal processing module. The self-traceable grating is arranged on a to-be-measured displacement motion platform. The coherent light source, the photoelectric detection module and the signal processing module are sequentially connected. Laser generated by the coherent light source propagates through the photoelectric detection module and is incident on the self-traceable grating, diffracts with the self-traceable grating, returns to the photoelectric detection module to continue propagating and enters the signal processing module. The signal processing module collects an interference signal to obtain a motion displacement and a motion direction.

Disclosed are a light detection and ranging (LIDAR) for both short range and long range based on a single light source, and a vehicle including the same. The lidar includes: a transmitter configured to generate and transmit light; a first receiver configured to receive light reflected from an object within a first detection region of a short range; and a second receiver configured to receive light reflected from an object within a second detection region of a long range, wherein a two-dimensional region of the second detection region at least partially overlapping the first detection region is included in the first detection region.

Disclosed are a light detection and ranging (LIDAR) for both short range and long range based on a single light source, and a vehicle including the same. The lidar includes: a transmitter configured to generate and transmit light; a first receiver configured to receive light reflected from an object within a first detection region of a short range; and a second receiver configured to receive light reflected from an object within a second detection region of a long range, wherein a two-dimensional region of the second detection region at least partially overlapping the first detection region is included in the first detection region.

A multi-laser bore-sighting riflescope system can receive a first laser beam having a first wavelength and a second laser beam having a second wavelength smaller than the first wavelength. The system can detect reflected light from the first laser beam. The system can calculate an initial range to a target. The system can determine a ballistics solution. The system can find a ballistics aimpoint. Further, the system can illuminate a display of a riflescope display assembly (RDA). The system can mark the ballistics aimpoint with an electronic reticle on the display. The system can redirect the first laser beam to the ballistics aimpoint. The system can redirect the second laser to the ballistics aimpoint. The system can detect secondary reflected laser light from the first laser beam. The system can calculate a secondary range to the target.

A device for the radio stimulation of an antenna includes at least one transmission sub-assembly formed by an array of radiating elements and an array of photoelectric receivers; as well as a generator that synthesizes a set of electrical signals that are intended to excite each radiating element. The electrical signals are transmitted to the transmission sub-assembly in the form of modulated light waves that are multiplexed to form a composite laser beam that illuminates the array of photoelectric receivers. Each of the photoelectric receivers receives a light wave. The array of photoelectric sensors and the array of radiating elements have substantially identical arrangements. Each photoelectric receiver is connected to a radiating element in its array at a position identical to the one that said receiver occupies within its own or a position symmetrical thereto.

A handheld laser distance measuring device for a contactless distance measurement between the laser distance measuring device and a remote object uses a laser beam that is emitted by the laser distance measuring device. The laser distance measuring device includes a device-side coupling device paired with the device housing. The coupling device is configured for reversibly arranging at least one attachment device on the laser distance measuring device. By arranging the at least one attachment device on the laser distance measuring device, at least one additional functionality can be provided.

A handheld laser distance measuring device for a contactless distance measurement between the laser distance measuring device and a remote object uses a laser beam that is emitted by the laser distance measuring device. The laser distance measuring device includes a device-side coupling device paired with the device housing. The coupling device is configured for reversibly arranging at least one attachment device on the laser distance measuring device. By arranging the at least one attachment device on the laser distance measuring device, at least one additional functionality can be provided.

LIDAR systems, and methods of measuring a scene are disclosed. A laser source emits one or more optical beams. A scanning optical system scans the optical beams over a scene and captures reflections from the scene. A measurement subsystem independently measures the reflections from N subpixels within each scene pixel, where N is an integer greater than 1, and combines the measurements of the reflections from the N subpixels to determine range and/or range rate for the pixel.

LIDAR systems, and methods of measuring a scene are disclosed. A laser source emits one or more optical beams. A scanning optical system scans the optical beams over a scene and captures reflections from the scene. A measurement subsystem independently measures the reflections from N subpixels within each scene pixel, where N is an integer greater than 1, and combines the measurements of the reflections from the N subpixels to determine range and/or range rate for the pixel.

A vehicle position and velocity estimation based on camera and LIDAR data are disclosed. A particular embodiment includes: receiving input object data from a subsystem of an autonomous vehicle, the input object data including image data from an image generating device and distance data from a distance measuring device; determining a two-dimensional (2D) position of a proximate object near the autonomous vehicle using the image data received from the image generating device; tracking a three-dimensional (3D) position of the proximate object using the distance data received from the distance measuring device over a plurality of cycles and generating tracking data; determining a 3D position of the proximate object using the 2D position, the distance data received from the distance measuring device, and the tracking data; determining a velocity of the proximate object using the 3D position and the tracking data; and outputting the 3D position and velocity of the proximate object relative to the autonomous vehicle.