摘要:
A multifunctional vehicle antenna assembly that includes a primary multiple input and multiple output (MIMO) antenna component; a secondary MIMO antenna component; and a global navigation satellite system (GNSS) antenna component, wherein the GNSS antenna component is located between the primary MIMO antenna component and the secondary MIMO antenna component and is located nearer to the secondary MIMO antenna component.
摘要:
A method and system is provided for determining a relative position between a host vehicle and a remote vehicle using an indirect assisting entity technique. A GPS position of the host vehicle and a remote vehicle are obtained. A number of common satellites providing GPS data to the host vehicle and the remote vehicle are determined. An indirect-assisting entity is identified having a common number of satellites in communication between the host vehicle and remote vehicle, respectively, which is greater than the number of common satellites between host vehicle and the remote vehicle. A relative position is determined between the host vehicle and the indirect-assisting entity, and the remote vehicle and the indirect-assisting entity. A position of the host vehicle relative to the remote vehicle is determined as a function of the determined position of the host vehicle and remote vehicle relative to the indirect-assisting entity.
摘要:
A method of processing global navigation satellite system (GNSS) data includes identifying one or more GNSS satellites servicing a predefined area, receiving at least one of GNSS almanac data or space-based augmentation system (SBAS) data for the satellites servicing the predefined area, determining the performance of the GNSS satellites servicing the predefined area using the almanac data or SBAS data, and applying a performance rating to the predefined area based on the performance of the GNSS satellites.
摘要:
A traffic flow advisory system includes a locating device for identifying a position of a driven vehicle. A communication device exchanges vehicle position data, speed data, and heading data with remote vehicles. A processor constructs a traffic flow rate in a plurality of road lanes based on the position data and speed data. A human machine interface indicates to a driver of the driven vehicle the traffic flow rate of each of the road lanes.
摘要:
A system and method for calibrating the bias and scale factors of a heading rate sensor, such as a yaw-rate sensor, using GPS signals. The system receives wheel speed or rotation signals, a vehicle odometer reading, GPS signals and yaw-rate signals. The system includes a wheel-slip detection processor that determines whether there is wheel-slip based on the wheel speed signals and the GPS signals. The system also includes a wheel-based acceleration processor that estimates vehicle acceleration. The system also includes a differential odometry processor that determines vehicle heading based on wheel speed. The system also includes a GPS reference data validation processor that determines whether the GPS signals are valid using the estimated vehicle acceleration and wheel speeds. The valid GPS signals are then used to calibrate the yaw-rate sensor signals, which can be used for vehicle heading purposes.