Patent ID: 7885745
Filing Date: 2011-02-08
Classification: G01C

Abstract:
1. A GNSS control system for a GNSS controlled vehicle, which control system comprises: a GNSS receiver associated with the controlled vehicle; multiple antennas associated with the controlled object and connected to the GNSS receiver; X, Y and Z axis inertial sensors associated with the controlled object and providing outputs corresponding to vehicle pitch, roll and yaw respectively; a direction sensor associated with the vehicle and determining its direction of travel; a control module connected to the receiver and the vehicle and adapted for controlling the vehicle in response to GNSS input; a GNSS control function associated with said control module; a guide function for covering a predetermined area with said vehicle; multiple guidance mode functions including: straight line (AB); contour; concentric circle; spiral and point A +direction; a function for detecting an end-of-swath turnaround of said vehicle; a function for prioritizing GNSS data acquisition in response to said vehicle turnaround whereby said GNSS control function acquires and guides said vehicle along a previous swath; and a function for continuing guidance during GNSS signal interruption using the output of said direction and inertial sensors for maintaining a predetermined path of travel of said vehicle.