Abstract:
A method and apparatus for directing a pursuing vehicle, such as a torpedo, on an intercept trajectory from a launching vehicle to a target vehicle th evasion capabilities. Models of the pursuing vehicle and evading target provide proposed trajectories based upon various environmental considerations. A guidance system uses estimates of initial operating parameter solutions, such as gyro angle, alertment time and intercept time, to begin a convergent, iterative process that defines final operating parameter solutions from which the guidance parameters are determined and transferred to the pursuing vehicle at launch. During each iteration, the solution determines an alertment time and an alertment bearing from the target vehicle to the pursuing vehicle at the alertment time. A selected evasive strategy includes a turn that is calculated relative to the alertment bearing.
Abstract:
A correction method is provided for a map-supported navigation system or for a navigation system, in which the position of a motor vehicle found by means of composite navigation is checked and corrected. To correct the fed back position, a range of error is initially established, whose magnitude is determined by the tolerances of the vehicle sensors of the measuring errors of a navigation system. Within this range of error, all paved roads are taken into consideration as a possible vehicle position. A main route on which the vehicle is travelling is selected for the most probable position of the motor vehicle. The other positions continue to be used as parallel routes. If plausibility considerations reveal that a parallel route has a greater probability for the vehicle position than the present main route, then the parallel route is defined as the new main route. With the aid of a hysteresis, the current (actual) vehicle position is prevented from continually jumping back and forth among several streets.
Abstract:
A digital computer system for displaying a computer generated terrain representing a 3-dimensional depiction of the real world terrain surrounding a vehicle in real-time while the vehicle is in motion. This 3-D (3-Dimensional) image is rendered in real time while the vehicle is in motion and uses Global Positioning System (GPS) or differential GPS (dGPS) data available from a GPS unit and translates that data into virtual space within an Image Generation Processing block of the digital computer system. The digital computer system generates a virtual world 3-D image representing the eye-point position of the vehicle and directional vector into a terrain database. Using the latitude, longitude, and altitude supplied from the GPS unit as the eye point position into a virtual world using a terrain database, the Image Generation Processing block has a render engine capable of rendering a depiction of the terrain outside of the vehicle, as would be seen in high visibility conditions, regardless of weather, lighting and atmospheric conditions.
Abstract:
An autonomous vehicle has a distance measuring sensor that periodically measures the distance to an object using a prescribed period and it's movement is controlled in accordance with the distance measured by the distance measuring sensor. A controller that controls the prescribed period based on the moving speed and the measured distance so that the prescribed period is made shorter as the moving speed increases and the distance to the object becomes shorter.
Abstract:
GPS satellite (4) ranging signals (6) received (32) on comm1, and DGPS auxiliary range correction signals and pseudolite carrier phase ambiguity resolution signals (8) from a fixed known earth base station (10) received (34) on comm2, at one of a plurality of vehicles/aircraft/automobiles (2) are computer processed (36) to continuously determine the one's kinematic tracking position on a pathway (14) with centimeter accuracy. That GPS-based position is communicated with selected other status information to each other one of the plurality of vehicles (2), to the one station (10), and/or to one of a plurality of control centers (16), and the one vehicle receives therefrom each of the others' status information and kinematic tracking position. Objects (22) are detected from all directions (300) by multiple supplemental mechanisms, e.g., video (54), radar/lidar (56), laser and optical scanners. Data and information are computer processed and analyzed (50,52,200,452) in neural networks (132, FIGS. 6-8) in the one vehicle to identify, rank, and evaluate collision hazards/objects, an expert operating response to which is determined in a fuzzy logic associative memory (484) which generates control signals which actuate a plurality of control systems of the one vehicle in a coordinated manner to maneuver it laterally and longitudinally to avoid each collision hazard, or, for motor vehicles, when a collision is unavoidable, to minimize injury or damage therefrom. The operator is warned by a heads up display and other modes and may override. An automotive auto-pilot mode is provided.
Abstract:
A method of displaying map data for use in an automobile traffic guidance system classifies map data into categories for user selected display. The classified map data is stored in registers which are selectively driven according to user selected menus of map data. Only selected map data is displayed to the user on an LCD unit by providing a corresponding data signal, clock signal and strobe signal to an LCD driver.
Abstract:
A traveling device for calculating the relative displacement of a vehicle in a road using a magnetic sensor and a CCD camera and performing automatic steering. The vehicle is equipped with a magnetic sensor and a CCD camera. A magnetic ECU processes a signal from the magnetic sensor, an image ECU processes a signal from the CCD camera and the resulting relative displacements are both output to a vehicle control computer. When a relative displacement output from the image ECU is not irregular, the vehicle control computer performs steering control after calculating an amount of corrective steering using this relative displacement and, when it is irregular, the vehicle control computer performs steering control after calculating an amount of corrective steering using the relative displacement output from the image ECU.
Abstract:
When a user selects an item from a menu displayed by a display unit of a vehicular terminal, a control unit of the vehicular terminal receives information data and location data corresponding to the information data from an information center and stores the data inside a database. After receiving present position data from a present position detection unit, the control unit determines location data that is nearest to the present position from among location data stored in the database. Then, the control unit drives the display unit to display the information data corresponding to the extracted location data, thus simplifying the selection process the user needs to perform to obtain the desired information.
Abstract:
Provided is an information transmitting apparatus for transmitting information to an external receiving apparatus by means of a radio wave comprising: a control information attaching device for attaching control information representing a control processing method on the receiving apparatus side of the information to the information to be transmitted; and a transmitting device for transmitting information to which the control information is attached. Further provided is an information receiving apparatus for receiving and displaying transmitted information comprising: a receiving device for receiving the transmitted information; a display device for displaying the received information; and information processing device operating, when control information representing a control processing method of the received information is attached to the received information, to execute information processing corresponding to the control information.
Abstract:
Methods and apparatus for generation of a route from a source location to a final destination are described. According to one embodiment, a two-ended search is performed based on the principles of the A* algorithm. That is, two routes are simultaneously generated, one from the source to the destination, and one from the destination to the source. According to another embodiment, a route generation algorithm determines when to stop searching for route candidates. The algorithm searches a map database for a first number of iterations thereby generating a first route candidate. After generation of the first route candidate, searching of the map database is terminated after a second number of additional iterations. A best route candidate is then selected as the route.