The origin of the Vehicle Coordinate System is defined as the midpoint of the axis of the rear axle (see figures below).

List of vehicle-related coordinate systems

This page demonstrates the 3D coordinate system used in the virtual environment to calculate the coordinate of vehicle in the space. Each axis represents different domain to comprise the 3D area. More detailed information are listed below.

  • Global coordinate frame (vehicle position relative to the map)

    • pose_x, pose_y, pose_z

  • Vehicle coordinate frame (sensor position relative to the vehicle origin)

    • x, y, z

    • The origin of coordinates is the center between rear wheels

    • The x axis is the real wheel axis

    • The x axis is parallel to the ground and perpendicular to the y axis of the rear wheel.

    • The z axis is perpendicular to the ground