Abstract:
Die Erfindung schafft einen Mikrospiegelscanner und ein Verfahren zur Steuerung eines Mikrospiegelscanners. Das Verfahren umfasst dabei die folgenden Verfahrensschritte: Bereitstellen (S01) eines Schussmusters (13), welches zumindest Informationen über erste Ansteuersignale in Abhängigkeit von Spiegelstellungen (α1, α2, α3) eines verstellbaren mikromechanischen Spiegels (14) des Mikrospiegelscanners umfasst, welche zum Ansteuern einer Lichtquelle (10) des Mikrospiegelscanners bestimmt sind; Bestimmen (S02) einer aktuellen Spiegelstellung (α1, α2, α3) des Spiegels (14); Aussenden (S03) von Lichtstrahlen (20) in einen Raumwinkels durch Ablenken der Lichtstrahlen (20), welche in Abhängigkeit von der bestimmten (S02) aktuellen Spiegelstellung (α1, α2, α3) des Spiegels (14) gemäß den ersten Ansteuersignalen des Schussmusters (13) erzeugt werden, mittels des Spiegels (14) in der bestimmten aktuellen Spiegelstellung (α1, α2, α3); Messen (S04) von an einem Objekt (30) in dem Raumwinkel reflektierten Lichtstrahlen (22) mittels eines Lichtsensors (16) des Mikrospiegelscanners zum Bestimmen einer Distanz zwischen dem Objekt (30) und dem Mikrospiegelscanner; Bestimmen (S05) einer Position des Objekts (30) und/oder einer Art des Objekts (30) zumindest in Abhängigkeit von der bestimmten Distanz und der aktuellen Spiegelstellung (α1, α2, α3) des Spiegels (14); und Anpassen (S06) des Schussmusters (13) in Abhängigkeit von der Position und/oder Art des Objekts (30).
Abstract:
An aiming system of an aimable device includes a user display, an imaging system, user controls, a tracker, and a range finder such as a LRF. The imaging system displays, on the user display, an indicator of the direction in which the device points. The user uses the user controls to lock on a target towards which the device points according to the indicator. Then the tracker tracks the target, and the range finder measures the range to the tracked target. The tracker aims the range finder at the target, or alternatively scans the target and its background, one-dimensionally or two- dimensionally.
Abstract:
Aspects of the disclosure relate generally to detecting road weather conditions. Vehicle sensors including a laser 310, 311, precipitation sensors 340, and/or cameras 320, 322 may be used to detect information such as the brightness of the road, variations in the brightness of the road, brightness of the world, current precipitation, as well as the detected height of the road. Information received from other sources such as networked based weather information (forecasts, radar, precipitation reports, etc.) may also be considered. The combination of the received and detected information may be used to estimate the probability of precipitation such as water, snow or ice in the roadway. This information may then be used to maneuver an autonomous vehicle 101 (for steering, accelerating, or braking) or identify dangerous situations.
Abstract:
A processor calculates a safe landing zone for an aircraft. The processor executes the following steps: (a) converting 4D point cloud data into Cartesian coordinates to form a height map of a region; (b) segmenting the height map to form boundaries of an object in the region; and (c) determining maximum height within the boundaries of the object. Also included are (d) determining if the maximum height is greater than a predetermined height to form a vertical obstruction (VO) in the region; and (e) determining if the VO is in the line of sight (LOS) of the aircraft to classify the landing zone as safe or unsafe. The processor further includes the steps of: (f) forming a slope map over the height map, in which a slope of a pixel is based on 4-neighbors of the pixel of interest, and (g) determining roughness over the height map.
Abstract:
A method, apparatus, system, and article of manufacture provide object descriptors for objects in point cloud data for an urban environment by segmenting the point cloud data. Point cloud data for an urban environment is obtained using a ground- based laser scanner. Terrain points are filtered out from the point cloud data using ground filtering. The point cloud data is then segmented into two or more blocks. Objects that lie on neighboring adjacent blocks are combined. Object descriptors for the combined objects are then provided (e.g., to the user or a program used by the user).
Abstract:
A LIDAR optical remote sensing system and method is disclosed. The system and method analyzes the falling edge profile of a return LIDAR signal that may be indicative of an object or an aerosol cloud, which is generally more diffuse. Use of the falling edge profile permits burnthrough to an object that may be obscured by the aerosol cloud. The profile is compared against at least one threshold that may correspond, in various embodiments, to a negative slope of the falling edge, an integrated power under the falling edge, or a range estimate error for varying transmitted power values, varying transmitted pulse lengths and/or varying receiver detector field of view values.
Abstract:
There is provided a system for detecting distant seaborne objects by an airborne vehicle, including a seeker head having an axis in the direction of flight, a sensor mounted on the seeker's head, the sensor being operative to transmit towards the sea surface a laser radiation beam of selected wavelength and to receive from the sea water surface radiation reflected from the sea water surface and from a seaborne object, and a computing unit for differentiating between the reflection received from the sea water surface and from the seaborne object. A method for detecting distant seaborne objects by an airborne vehicle is also provided.