Probabilistic target selection and threat assessment method and application to intersection collision alert system

摘要

A system and method for providing target selection and threat assessment for vehicle collision avoidance purposes that employ probability analysis of radar scan returns. The system determines a travel path of a host vehicle and provides a radar signal transmitted from a sensor on the host vehicle. The system receives multiple scan return points from detected objects, processes the scan return points to generate a distribution signal defining a contour of each detected object, and processes the scan return points to provide a position, a translation velocity and an angular velocity of each detected object. The system selects the objects that may enter the travel path of the host vehicle, and makes a threat assessment of those objects by comparing a number of scan return points that indicate that the object may enter the travel path to the number of the scan points that are received for that object.

主权项

1. A method for providing target threat assessment in a collision avoidance system on a host vehicle, said method comprising:
determining a travel path of the host vehicle using motion dynamics of the host vehicle; transmitting a scan signal from at least one sensor on the host vehicle; receiving multiple scan return points at the host vehicle from one or more detected objects that reflect the scan signal; generating a distribution signal defining a contour of each detected object using the scan signal; calculating a position, a translation velocity and an angular velocity of each detected object using the scan return points; selecting the objects that may be in or enter the travel path of the host vehicle using the distribution signal, position, translation velocity and angular velocity of each object; and determining a threat assessment of those objects that are in or may enter the travel path of the host vehicle by comparing a number of scan return points that indicate that the object is in or may enter the travel path to the number of scan points that are received for that object.