Patent ID: 6275773
Filing Date: 2001-08-14
Classification: B60T,G01S,G07C,G08G

Abstract:
A computer controlled collision avoidance and warning method comprising the acts of:receiving continuously from a network of satellites on a first communication link at one of a plurality of automobiles GPS ranging signals for initially accurately determining the one automobile's position on a highway on a surface of the earth;receiving continuously at the one automobile on a second communication link from one of a plurality of stations having a known fixed position on the surface of the earth DGPS auxiliary range signals, including correction signals for correcting propagation delay errors in the GPS ranging signals and pseudolite signals for assistance in making further measurements for still further improving the accuracy of the GPS ranging signals and of determining the one automobile's position on the highway on a surface of the earth;determining continuously at the one automobile from the GPS, DGPS, and pseudolite signals the one automobile's kinematic tracking position on the surface of the earth with centimeter accuracy;communicating the one automobile's status information including the kinematic tracking position to each other one of the plurality of automobiles and to the one station or one of a plurality of control centers;analyzing the kinematic tracking positions and status information to identify and evaluate an inconsistent driving pattern of the one automobile relative to each other one of the plurality of automobiles;determining in a fuzzy logic associative memory the one automobile's expert driving response relative to the inconsistent driving pattern and for each collision hazard;generating expert driving response control signals for actuating a plurality of control systems of the one automobile in a coordinated manner;intelligibly indicating a warning of the inconsistent driving pattern; andcoordinately actuating the control systems of the one automobile with the control signals to operate the one automobile laterally and longitudinally in real time to terminate the inconsistent driving pattern.