Jacoby R. Larson - San Diego CA, US Michael H. Bruch - San Diego CA, US
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
G08G 1/16
US Classification:
701 23, 701301, 340435, 340436
Abstract:
A method involves calculating a closest point of approach (CPA) between a vehicle and a moving obstacle, determining the CPA is within a pre-determined distance from the vehicle at a point in time along the vehicle path, calculating a projected obstacle area (POA) for the moving obstacle, and modifying the vehicle path so the vehicle avoids the POA. The POA is a polygonal region between the boundaries calculated by determining a first point in time along the obstacle path that the moving obstacle is within the pre-determined distance, determining a second point in time along the obstacle path that the moving obstacle is within the pre-determined distance, creating a first line on one side of a midpoint line based upon a pre-determined angle of uncertainty, and creating a second line on the other side of the midpoint line based upon the pre-determined angle of uncertainty.
Registration Of Latitude/Longitude Coordinates Using Range Detection Sensors And Digital Nautical Charts
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.
Jacoby Larson - La Mesa CA, US Nghia Xuan Tran - San Diego CA, US Michael Bruch - San Diego CA, US Aaron Burmeister - San Diego CA, US Ryan Halterman - San Diego CA, US Jason Lum - San Diego CA, US Mark Tjersland - San Diego CA, US
International Classification:
G02B 26/10
US Classification:
700259
Abstract:
A single-scanning system for a robot can include a base and a nodding mechanism that pivotably attached to the base. A single-scan sensor such as a lidar or laser sensor can be fixed to the nodding mechanism, and a controller can be connected to the single-scan sensor and motor via a gear arrangement. The controller can manipulate nodding characteristics such as nodding range and nodding angular velocity dynamically, during operation of the robot, either in response to a command from a remote user, robot autonomy system, or according to written instructions included in the controller. An encoder disk can interconnect the nodding mechanism to the controller. With this configuration, the encoder disk can receive sensor data from the single-scan sensor, for further transmission to said controller. A transceiver can route sensor data to the remote user, and can also receive commands from the remote user.
Jacoby R. Larson - San Diego CA, US Michael H. Bruch - San Diego CA, US
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
G01C 22/00
US Classification:
701 23, 114 50, 114221 A, 89 5, 89 1809
Abstract:
A method includes the steps of receiving a present route for a vehicle based on a present vehicle location and a vehicle destination, receiving obstacle information from a sensor of a sensor array, the received obstacle information including information about at least one moving obstacle, and determining if the received present route is valid based upon the received obstacle information. If the received present route is invalid, the method determines a revised route based upon the received present route, the received obstacle information, and/or the vehicle destination. A system incorporating the method may include a sensor array, a communication link, a processing module, and a navigation module. The system and method may be used to control the route of a vehicle such as an unmanned surface vehicle that may be land-based, water-based, or air-based.
Localization Using Particle Filtering And Image Registration Of Radar Against Elevation Datasets
- San Diego CA, US Amin Mohammad Rahimi - San Diego CA, US Jacoby Ryan Larson - Surprise AZ, US Julian Yousif Raheema - El Cajon CA, US
International Classification:
G01S 13/90 G01S 13/86 G01S 7/04
Abstract:
A system for localization includes a radar, a database, a simulator, a registrar, and a filter. The radar is positioned at a disposed location requiring localization. The radar generates a radar image scanning a proximity around the disposed location. The database stores features of a landmass. The simulator generates synthesized images of the features that the radar is predicted to generate from corresponding viewpoints. The registrar calculates respective correlation indicators between the radar image and each synthesized image. The filter sets a pose estimate of the disposed location to an average of those viewpoints from which correspond the synthesized images having the best or better ones of the correlation indicators.
Youtube
Larson's House
Duration:
3m 15s
Larsons Sugar Music Video
The Larsons have only one day to deliver as much sugar as possible to ...
Duration:
4m 27s
Number One Fan Jeremy Larson meets Jacoby Sha...
Me(Jeremy Larson) finally meeting my hero Papa Roach you can even see ...