Abstract: A system and method for operation of an autonomous vehicle (AV) yard truck is provided. A processor facilitates autonomous movement of the AV yard truck, and connection to and disconnection from trailers. A plurality of sensors are interconnected with the processor that sense terrain/objects and assist in automatically connecting/disconnecting trailers. A server, interconnected, wirelessly with the processor, that tracks movement of the truck around and determines locations for trailer connection and disconnection. A door station unlatches/opens rear doors of the trailer when adjacent thereto, securing them in an opened position via clamps, etc. The system computes a height of the trailer, and/or if landing gear of the trailer is on the ground and interoperates with the fifth wheel to change height, and whether docking is safe, allowing a user to take manual control, and optimum charge time(s). Reversing sensors/safety, automated chocking, and intermodal container organization are also provided.

Abstract: A system and method for operation of an autonomous vehicle (AV) yard truck is provided. A processor facilitates autonomous movement of the AV yard truck, and connection to and disconnection from trailers. A plurality of sensors are interconnected with the processor that sense terrain/objects and assist in automatically connecting/disconnecting trailers. A server, interconnected, wirelessly with the processor, that tracks movement of the truck around and determines locations for trailer connection and disconnection. A door station unlatches/opens rear doors of the trailer when adjacent thereto, securing them in an opened position via clamps, etc. The system computes a height of the trailer, and/or if landing gear of the trailer is on the ground and interoperates with the fifth wheel to change height, and whether docking is safe, allowing a user to take manual control, and optimum charge time(s). Reversing sensors/safety, automated chocking, and intermodal container organization are also provided.

Abstract: A local clock system for generating a local clock signal whose frequency and phase are synchronized to the frequency and phase of an external input clock reference signal, wherein the output local clock signal is a non-integer multiple of the input clock reference signal. A numerically controlled generator generates the clock output signal, and the frequency and phase thereof are controlled by a digital tuning word input thereto. An input frequency divider divides the input clock reference signal by a first constant k.sub.11 or a second constant k.sub.22, and an output frequency divider for dividing the output signal by a first constant k.sub.11 or a second constant k.sub.21. A relay-phase detector receives output signals from the input frequency divider and the output frequency divider, and produces a 0 or a 1 output, which controls the input frequency divider to divide by k.sub.12 or k.sub.22 and controls the output frequency divider to divide by k.sub.11 or k.sub.