Abstract: A method of displaying a corridor for an unmanned vehicle using a point cloud. The method includes: displaying the space vector points in a preset 3-dimensional space; and generating and displaying individual corridors, each individual corridor connecting between selected space vector points from among the space vector points. Each of the space vector points includes location information and size information, the individual corridor is displayed by a stereoscopic structure including an internal space in which the unmanned vehicle can fly, and the form of the individual corridor is determined based on the size information of a pair of adjacent space vector points.

Abstract: A light detection and ranging (LIDAR) signal processing apparatus capable of accurately measuring a distance to an object using an optical means may include: a flight length deriving unit to calculate a flight length of a first laser light emitted from a sensor toward a road with an inclination, a vertical inclination measurement unit to estimate a vertical inclination of the vehicle with respect to the road based on the flight length, a horizontal inclination measurement unit to estimate a horizontal inclination of the vehicle with respect to the road based on the flight length, a reliability determination unit to determine reliability of information detected by the sensor based on the vertical inclination and the horizontal inclination of the vehicle, and a data processing unit to process the detected information when the detected information is reliable.

Abstract: Disclosed is a system including a content receiver and an antenna coupled to the content receiver. A camera is mounted on the antenna. The content receiver includes a processor and a memory storing instructions that, when executed by the processor, cause the content receiver to: output a control signal to the camera mounted on the antenna, receive image data from the camera mounted on the antenna, determine that the image data received from the camera mounted on the antenna indicates a potential or actual obstruction of the antenna or movement of the antenna, and output a message indicating that the potential or actual obstruction of the antenna or movement of the antenna device has been detected, in response to determining that the image data received from the camera mounted on the antenna indicates the potential or actual obstruction of the antenna or movement of the antenna.

Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for identifying gesture. A radar antenna array applied to mobile User Equipment (UE) includes a transmit (Tx) antenna array located on a horizontal line and configured to transmit radar waves and a receive (Rx) antenna array including horizontal Rx antennae arranged along a horizontal dimension and/or pitch Rx antennae arranged along a pitch dimension. The horizontal dimension and the pitch dimension are perpendicular to each other. The Rx antenna array is configured to receive echoes caused by reflection of the radar waves. The horizontal Rx antennae are located on the horizontal line where the Tx antenna array is located. The pitch dimension is perpendicular to the horizontal line. A transmitting parameter for transmitting the radar waves and a receiving parameter for receiving the echoes are used at least for identifying a gesture within a radiation range.

Abstract: A system includes a sensor capturing sensor data and an imager capturing imager data in combination with a computing device configured to time calibrate the sensor and the imager, detect an occurrence of a first event in the sensor data and extract a first time at which the first event occurred, and identify a first image in the image data having a capture time correlating to the first time at which the first event occurred in combination with retrieving the first image for insertion into a composite image including further image data combined with at least a portion of the first image depicting the first event.

Abstract: Aspects of the disclosure relate to providing sensor data on a display of a vehicle. For instance, data points generated by a lidar sensor may be received. The data points may be representative of one or more objects in an external environment of the vehicle. A scene including a representation of the vehicle from a perspective of a virtual camera, a first virtual object corresponding to at least one of the one or more objects, and a second virtual object corresponding to at least one object identified from pre-stored map information may be generated. Supplemental points corresponding to a surface of the at least one object identified from the pre-stored map information may be generated. A pulse including at least some of the data points generated by the sensor and the supplemental points may be generated. The scene may be displayed with the pulse on the display.

Abstract: A sensor assembly for use in association with non-integrated, ground-based collision avoidance systems for aircraft, including (a) a sensor; and (b) a frame sub-assembly, wherein the sensor is releasably securable to the frame sub-assembly.

Abstract: Provided is a molded article (1) of a vehicle (S) designed to be placed in a path of millimeter wave transmitted from a radar device (7) that can minimize the attenuation of the millimeter wave. The molded product has a thickness as measured in a direction of the path of the millimeter wave transmitted from the radar device which is an integer multiple of a half wavelength of the millimeter wave in the molded article.

Abstract: A method is provided for determining a position of a mobile participant of a wireless communication network, wherein the method comprises: determining (102) a first distance between the mobile participant and a stationary participant of the wireless communication network depending on a location signal transmitted by the stationary participant or the mobile participant; determining (104) a second distance between a stationary replicator unit and the mobile participant depending on a replicated signal which is transmitted by means of the stationary replicator unit depending on the location signal, and depending on a further distance between the replicator unit and the stationary participant; and determining (106) a position of the mobile participant depending on the first distance and depending on the second distance.

Abstract: A method detects a lane for a transverse guidance of a vehicle. The transverse guidance of the vehicle is based on a roadway model. The method has the steps of ascertaining one or more features which are suitable for influencing the detection of the lane; detecting a lane on the basis of a sensor system of the vehicle; and ascertaining the roadway model on the basis of the detected lane and the ascertained one or more features. The method optionally has the steps of additionally receiving navigation data and transversely guiding the vehicle on the basis of the ascertained roadway model.

Abstract: A method and system for detection of a target by a passive radar system exploiting multichannel-per-carrier cellular illuminator sources, the method including: receiving a reference signal from a reference source, said reference signal being received at a reference element of a radar receiver of the passive radar system; receiving, at a surveillance element of said radar receiver, a reflected signal originating from said reference source and reflected off the target, said reflected signal including interference; deciphering components of said signals; and reconstructing said signals, from said components, excluding said interference.

Abstract: Device, system, and method of aircraft protection and countermeasures against threats. A system for protecting an aircraft against a threat, includes a dual frequency Radio Frequency (RF) module, which includes: a dual-band RF transmitter and a dual-band RF receiver, to transmit and receive high-band RF signals and low-band RF signals; and a threat confirmation and tracking module, to confirm and track a possible incoming threat based on processing of high-band RF signals and low-band RF signals received by the dual-band RF receiver. The system further includes a dual frequency band antenna, to transmit and receive the high-band RF signals and the low-band RF signals. The system also includes a directed high-power laser transmitter, to activate a directed high-power laser beam as countermeasure towards a precise angular position of a confirmed threat.

Abstract: A mechanism is provided to determine if a short-range automotive radar detection is a direct reflection or an indirect (also known as “multipath”) reflection from a physical target object. The multipath information is further used to perform a height estimation of the object. Embodiments provide a radar system having a range resolution smaller than a path difference between the direct reflection path and the indirect reflection path. Both range separation techniques and Doppler separation techniques are utilized to provide a reliable and accurate estimation of the height of the object.

Abstract: A system for providing integrated detection and deterrence against an unmanned vehicle including but not limited to aerial technology unmanned systems using a detection element, a tracking element, an identification element and an interdiction or deterrent element. Elements contain sensors that observe real time quantifiable data regarding the object of interest to create an assessment of risk or threat to a protected area of interest. This assessment may be based e.g., on data mining of internal and external data sources. The deterrent element selects from a variable menu of possible deterrent actions. Though designed for autonomous action, a Human in the Loop may override the automated system solutions.

Abstract: The present application generally relates to improve accuracy and sensitivity in a vehicular radar system through improved radar beamforming by initially detection of potential objects using a field of view image and image processing techniques. Specifically, a system and method are taught for performing object segmentation and/or contouring on an image corresponding to a radar field of view. The detected objects from the image are combined with the raw radar data to generate a beamformed radar data.

Abstract: In a method of determining a deviation of a path of a projectile from a predetermined path, the method uses an image of a target area in which the desired path or direction is pointed out. Subsequently, the real direction or real path is determined and the deviation is determined.

Abstract: A mobile scanning inspection system, comprising a vehicle body and an inspection arm including a cross arm and a vertical arm, wherein a first inspection device and a second inspection device are provided on the cross arm; the first inspection device is on the side close to the vehicle body and it emits a first laser inspection plane parallel to the side plane of the vehicle body, and the length of the longest portion of the first laser inspection plane is longer than the length of the vehicle body; the second inspection device is provided on the side close to the vertical arm and it emits a second laser inspection plane parallel to the side plane of the vehicle body and the second laser inspection plane is centered on the vertical arm, and extends a first preset distance and a second preset distance forward and backward.

Abstract: An unmanned vehicle includes WiFi sensors, which generate data by reflecting electromagnetic waves off an object within a vicinity of the unmanned vehicle. WiFi data processing circuitry receives the data generated by the WiFi sensors and analyzes the data to determine a characteristic of the object.

Abstract: A system and method for relating radar data to an image to track the flight of a path of a projectile includes a radar, an imager providing an image of an area into which a projectile is to be launched, a controller receiving the image and data from the radar relative to at least a portion of a trajectory of the projectile, the controller generating trajectory data by correlating the radar data and the image to determine the portion of the trajectory relative to at least one feature in the image, and a display displaying the trajectory data.

Abstract: A surveillance apparatus includes an optical camera that captures images based on received light, the optical camera including a camera aperture and a radar sensor including one or more transmitting antennas configured to emit electromagnetic radiation and one or more receiving antennas configured to receive electromagnetic radiation. The one or more transmitting antennas and the one or more receiving antennas form a virtual antenna array. The one or more transmitting antennas and the one or more receiving antennas are arranged such with respect to the optical camera that the center area of the virtual antenna array and the center area of the camera aperture coincide.

Abstract: Methods and systems for producing data describing target measurements using a processor (102) in a system (100) having at least one on-board sensor (106) on a vehicle. The method includes obtaining data from an on-board sensor (106), obtaining data from a sensor (108) off-board the vehicle, approximating (312) a target alignment error between the on-board and off-board sensor data, receiving target alignment error data in respect of at least one other sensor set comprising at least two sensors, estimating (316) a bias using the received target alignment error data and correcting the approximated target alignment error using the bias, and performing (320) a data fusion process on the obtained off-board sensor data and the obtained on-board sensor data using the approximated target alignment error to produce target measurement data.

Abstract: An mechanism for range estimation mapping that includes creation of a world map on an azimuth/elevation (AZ/EL) grid, relation of the grid to an earth-fixed north, east, and down (NED) coordinate system through an address table, and association of each pixel in each frame, by a programmable device, with an entry from the address table in order to determine a range is discussed. The associations may be repeated for each frame while an updated world map and address table are generated. When an updated address table is complete, the process may begin anew using the updated data.

Abstract: A park exit assist system includes an electronic control unit. The electronic control unit is configured to detect a situation around a host vehicle parked or stopped in a parking/stopping area on a roadside. The electronic control unit is configured to calculate, on the basis of a detected result of the situation around the host vehicle, a park exit guidance path along which the host vehicle is moved out of the parking/stopping area to a traffic road and in which a steering angle becomes neutral at the time when a roadside front end of the host vehicle advances into the traffic road. The electronic control unit is configured to guide the host vehicle from the parking/stopping area toward the traffic road by at least executing steering control along the park exit guidance path.

Abstract: A communication method and system for communication utilizing modulation of digital signals, such as by targets and/or by use of low-complexity tags is presented. Targets may include any device or object that may alter signals, and tags can include a device with the ability to reflect and/or alter the properties of the signals and, in doing so, impose specific modulations on or alterations of such signals. Modulations can be sensed or detected using a receiver or receivers implementing processing algorithms derived from passive radar detection operations or other processes.

Abstract: Disclosed is an obstacle determination device (1) including a driving assistance ECU (3) that determines collision with an obstacle detected by output of a radar (2) mounted on a vehicle and performs driving assistance for the vehicle. When a distance of a null-point zone divided by null points where the output of the radar (2) is low is represented as a distance between the null points, the driving assistance ECU (3) determines, in a distant zone that is away from a reference zone that is the null-point zone nearest to a host vehicle in a predetermined range, if the null-point zone of the distance between the null points shorter than the distance between the null points in the reference zone is detected by a predetermined number or more, that the host vehicle does not collide with the detected obstacle.

Abstract: An obstacle detection apparatus includes a transmission antenna transmitting radio waves, a reception antenna receiving radio waves transmitted to and reflected by an obstacle, an obstacle detection unit configured to detect the obstacle based on the received radio waves, a false detection determination unit configured to determine presence or absence of a false detection characteristic, which is set in advance, with regard to the detected obstacle, a camera capturing an image, and an obstacle existence determination unit configured to determine, based on the image captured by the camera, presence or absence of the obstacle on which it is determined that the false detection characteristic is present.

Abstract: A land-based Smart-Sensor System and several system architectures for detection, tracking, and classification of people and vehicles automatically and in real time for border, property, and facility security surveillance is described. The preferred embodiment of the proposed Smart-Sensor System is comprised of (1) a low-cost, non-coherent radar, whose function is to detect and track people, singly or in groups, and various means of transportation, which may include vehicles, animals, or aircraft, singly or in groups, and cue (2) an optical sensor such as a long-wave infrared (LWIR) sensor, whose function is to classify the identified targets and produce movie clips for operator validation and use, and (3) an IBM CELL supercomputer to process the collected data in real-time. The Smart Sensor System can be implemented in a tower-based or a mobile-based, or combination system architecture. The radar can also be operated as a stand-alone system.

Abstract: A sensor assembly that integrates a camera and a radar sensor is described herein. The sensor assembly includes a housing configured to partially enclose the camera and the radar sensor, and define a partial radome that partially intrudes into the radar beam. The partial radome is configured such that after passing through the partial radome a first phase angle of the first portion of the radar beam differs from a second phase angle of the second portion of the radar beam by an amount substantially corresponding to an integer number of three hundred sixty degrees (360°) of phase angle shift. The partial radome provides glare shield to the camera, protection to assembly, and is configured to minimally effect radar performance.

Abstract: In a method of determining a deviation of a path of a projectile from a predetermined path, the method uses an image of a target area in which the desired path or direction is pointed out. Subsequently, the real direction or real path is determined and the deviation is determined.

Abstract: Disclosed herein are a method and a system for recognizing a space of a road shoulder using an ultrasonic wave sensor, a radar and an imaging device. The method includes: controlling the radar to transmit a radar beam within a preset range based on the vehicle location; detecting a fixed object located within the preset range using a reflective wave of the radar beam received by the radar; calculating a distance between the fixed object and the vehicle using the radar when the fixed object is located within the preset range; detecting a solid line lane marking in a front image of a travel lane obtained from the imaging device; and recognizing the calculated distance between the fixed object and the vehicle as a space width of the road shoulder when the solid line lane is in the front image of the travel lane.

Abstract: A system and method for detecting dangerous objects and substances are disclosed. According to one embodiment, a method comprises generating a microwave signal that is reflected by a target to render one or more reflected signals. The one or more reflected signals are received at an antenna array. The one or more reflected signals are converted into digital reflected signals. The microwave signal is converted into a digital signal. The digital reflected signals and the digital signal are processed to determine the three dimensional position of the target. The digital reflected signals and the digital signal are processed to identify the target. The digital reflected signals and the digital signal are processed to determine a state of the target; and determine whether the target a dangerous object.

Abstract: A sensor assembly that integrates a camera and a radar sensor is described herein. The sensor assembly includes a housing configured to partially enclose the camera and the radar sensor, and define a partial radome that partially intrudes into the radar beam. The partial radome is configured such that after passing through the partial radome a first phase angle of the first portion of the radar beam differs from a second phase angle of the second portion of the radar beam by an amount substantially corresponding to an integer number of three hundred sixty degrees (360°) of phase angle shift. The partial radome provides glare shield to the camera, protection to assembly, and is configured to minimally effect radar performance.

Abstract: In certain aspects, this invention is a “control system” that detects and minimizes (or otherwise optimizes) an angle between vehicle centerline (or other reference axis) and vehicle velocity vector—as for JDAM penetration. Preferably detection is exclusively by optical flow (which herein encompasses sonic and other imaging), without data influence by navigation. In other aspects, the invention is a “guidance system”, with optical-flow subsystem to detect an angle between the vehicle velocity vector and line of sight to a destination—either a desired or an undesired destination. Here, vehicle trajectory is adjusted in response to detected angle, for optimum angle, e.g. to either home in on a desired destination or avoid an undesired destination (or rendezvous), and follow a path that's ideal for the particular mission—preferably by controlling an autopilot or applying information from navigation.

Abstract: A system for providing RF spatial awareness of an environment includes an RF detection system and a control system. The RF detection system includes an antenna array for receiving RF signals from a plurality of RF sources; and, a receiver system operatively connected to the antenna array using digital beamforming (DBF) techniques for processing the received RF signals and providing measurements of the RF signals as output. The control system receives the measurements of the RF signals and displays a plurality of indicia indicating the RF sources, thereby providing a visual survey of the environment.

Abstract: A surveillance system includes a multi-propeller aircraft having a main propeller and a plurality of wing unit propellers; a housing that houses the main propeller and the wing unit propellers; an optical video camera; an ultra-wideband (UWB) radar imaging system; a control system for controlling flight of the multi-propeller aircraft from a remote location; and a telemetry system for providing information from the optical camera and the ultra-wideband (UWB) radar imaging system to a remote location.

Abstract: A combination speed-detection, video-recording, and timing device that can be hand-held. The device contains one or more speed detection means, including, but not limited to, a radar detection or laser detection device. The device includes a camera able to capture video in digital form, and a timing device, similar in function to a stopwatch. The device is pointed at the object whose speed is to be measured, or the events to be recorded, and can be operated by means of a trigger on a handle. The device may further include a display, along with display controls. Storage means is used to store the speed, video and timer data. The device may contain its own power-supply, or may be externally powered.

Abstract: A sensor system and method of using the system synergistically to improve the accuracy and usefulness of measured results is described. The system is comprised of electronically linked components that act as markers to trigger events, producers that gather data from sensors and aggregators that combine the data from a plurality of producers using triggers from marker devices to select the data of interest. The system is shown to be applicable to selection of data regions of interest and to analysis of the data to improve accuracy. The analysis of the data of any particular sensor within the system makes use of extrinsic data, being data generated by other sensors and intrinsic data, that is data or data limits that are known to be true from nature, laws of physics or just the particular information the user wants to acquire. The system is demonstrated on the analysis of Doppler radar measurements of a thrown object.

Abstract: A forward facing sensing system for a vehicle includes a radar sensor device disposed within the vehicle cabin and having a sensing direction forward of the vehicle, and an image sensor disposed within the vehicle cabin and having a viewing direction forward of the vehicle. A control includes an image processor that is operable to analyze images captured by the image sensor in order to, at least in part, detect an object forward of the vehicle. The control, at least in part, determines that a potentially hazardous condition may exist in the path of the vehicle, with the potentially hazardous condition including at least one of (i) another vehicle, (ii) a person and (iii) an animal in the path of the vehicle. The radar sensor device and the image sensor collaborate to enhance the sensing capability of the sensing system for the potentially hazardous condition in the vehicle's path.

Abstract: Surveillance system for detecting the position, movement, nature of one or more objects and even communicate with it, that is adaptive to any extent and suitable for any mobile or fixed structure and even for persons, because of its flexible open architecture, which is fully modular to develop self-contained compact radar devices of special performances when working either autonomously, like conventional video-cameras nevertheless operating also with microwaves and therefore called microwave-cameras or radar-cameras, or jointly to form more complex interactive systems.

Abstract: A system includes a multi-system approach to detecting concealed weapons and person borne improvised explosive devices (PBIED). A first and second radar system operate at different center frequencies to provide, respectively, isolation of a target of interest from clutter and fine detail information on the target, such as whether the target is a living person, whether a concealed object may be present, material composition of the object, and shape, size, and position of the target relative to the system. Circular polarized radar beam may be used to distinguish a suspect object from within a crowd of people. Radar image of the object may be overlaid on visual image of a person carrying the object. Radar tracking of the object is coordinated with visual tracking of the target provided by a camera system, with visual display and tracking of the target overlaid with the radar information.

Abstract: Disclosed herein are systems, methods, and non-transitory computer-readable storage media for radio phase retrieval. A system practicing the method gathers first data from radio waves associated with an object observed via a first aperture, gathers second data from radio waves associated with the object observed via an introduced second aperture associated with the first aperture, generates reduced noise data by incoherently subtracting the second data from the first data, and performs phase retrieval for the radio waves by modeling the reduced noise data using a single Fourier transform. The first and second apertures are at different positions, such as side by side. This approach can include determining a value Q which represents a ratio of wavelength times a focal ratio divided by pixel spacing. This information can be used to accurately measure and correct alignment errors or other optical system flaws in the apertures.

Abstract: An obstacle detection apparatus includes a transmission antenna transmitting radio waves, a reception antenna receiving radio waves transmitted to and reflected by an obstacle, an obstacle detection unit configured to detect the obstacle based on the received radio waves, a false detection determination unit configured to determine presence or absence of a false detection characteristic, which is set in advance, with regard to the detected obstacle, a camera capturing an image, and an obstacle existence determination unit configured to determine, based on the image captured by the camera, presence or absence of the obstacle on which it is determined that the false detection characteristic is present.

Abstract: A land-based smart sensor system and several system architectures for detection, tracking, and classification of people and vehicles automatically and in real time for border, property, and facility security surveillance is described. The preferred embodiment of the proposed smart sensor system is comprised of (1) a low-cost, non-coherent radar, whose function is to detect and track people, singly or in groups, and various means of transportation, which may include vehicles, animals, or aircraft, singly or in groups, and cue (2) an optical sensor such as a long-wave infrared (LWIR) sensor, whose function is to classify the identified targets and produce movie clips for operator validation and use, and (3) a supercomputer to process the collected data in real-time. The smart sensor system can be implemented in a tower-based or a mobile-based, or combination system architecture. The radar can also be operated as a stand-alone system.

Abstract: The various embodiments herein provide a moving vehicle speed detection system for recording the speed violation. The system comprises third generation photo radar for determining an accurate speed of the moving vehicles by measuring a speed and also by measuring the speed with the help of an image processor. The speed of one or more vehicles moving in different lanes within the detection range of the system is accurately measured. The system has a traffic counter system and it can determine an average speed with a very high precision. Generally this system provides the operator with various directorial data and graphs which facilitates an intelligent management of traffic speed control. Also it can determine the accurate speed of any number of vehicles within the range of the system by a third generation photo radar system.

Abstract: A forward facing sensing system for a vehicle includes a windshield electronics module disposed in the vehicle cabin behind the windshield, a radar sensor device disposed within the windshield electronics module with a sensing direction forward of the vehicle, an image sensor disposed within the windshield electronics module with a viewing direction forward of the vehicle, and a control operable to analyze images captured by the image sensor in order to, at least in part, detect an object present forward of the vehicle in its direction of forward travel. The control, at least in part, determines that a potentially hazardous condition may exist in the path of forward travel of the vehicle. The radar sensor device and the image sensor collaborate in a way that enhances the sensing capability of the sensing system for the potentially hazardous condition in the path of forward travel of the vehicle.

Abstract: Embodiments of an apparatus and method for defending a physical zone from airborne and ground-based threats are disclosed. In the various embodiments, an apparatus includes a detection component configured to detect and track a ground-based or airborne threat proximate to the physical zone, an integration component to receive data from the detection component and process the data to determine a threat assessment. A defensive component receives the determined threat assessment and disables the ground-based and airborne threat based upon the determined threat assessment. A method includes detecting an object proximate to the physical zone to be protected, identifying the object as a hostile threat, determining at least one of a path and a point-of-origin for the object, and actuating a defensive system in response to the hostile threat.

Abstract: Presented is a system and method for eliminating spurious data in radar cross section (RCS) data. The system and method receives RCS data, and determines an expected number of scattering centers for an object of interest in said RCS data. The RCS data is processed to remove a plurality of frequency components in said RCS data based at least in part upon said expected number of scattering centers, and the RCS data is reconstructed without said plurality of frequency components to produce a reconstructed RCS data for the object of interest. In an embodiment, the TLS-Prony transform is used to transform the RCS data into a set of damped frequency components and coefficients, which are then constrained to the expected number of scattering centers in the known object using a TLS-Prong linear prediction order, and the order of the frequency components is varied until the order yields a least-error approximation.

Abstract: A forward facing sensing system comprises a windshield electronics module disposed in the interior cabin of a vehicle at and behind the windshield. A radar sensor device is disposed within the windshield electronics module and a forward facing image sensor is disposed within the windshield electronics module, and with both disposed behind or adjacent to an upper region of the windshield. A control comprising an image processor analyzes images captured by the forward facing image sensor in order to, at least in part, detect an object present forward of the vehicle in its direction of forward travel. The radar sensor device may utilize beam aiming or beam selection or may utilize digital beam forming or digital beam steering or may comprise an array antenna or a phased array antenna or the forward facing image sensor may comprise a pixelated imaging array sensor. The radar sensor device comprises a silicon germanium radar sensor.

Abstract: The present invention can find the exact location anywhere in the nautical world (latitude/longitude coordinates) by correlating or matching radar returns with maps produced by a digital nautical chart called a Chart Server, because each pixel location on the Chart Server maps can be traced back to a latitude/longitude coordinate. An obstacle avoidance module called a Chart Server provides digital nautical charts to create a map of the world. To determine the current world location of a vehicle, the invention combines the Chart Server maps with a radar return, which also appears to display prominent features such as coastlines, buoys, piers and the like. These return features from the radar are correlated or matched with features found in the Chart Server maps. The radar then reports its current location inside of its local map, which when translated to the Chart Server map, correlates to a latitude/longitude registration location.

Abstract: In a method for checking the plausibility of objects in driver assistance systems for motor vehicles is described, two measured variables are derived from position data from two object position-finding systems of the vehicle that operate independently of one another, for an object located by the two position-finding systems, one variable for each position-finding system, these variables representing one and the same physical parameter, and the two measured variables are then checked for consistency, which is characterized by the fact that the parameter is the time to collision of the vehicle with the object, which is calculated in advance.