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Information of gaussian distribution
Information of representative uncertainty area
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latency parameters, in second (s)
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coordinates
direction on the x-y plane
curvature on the x-y planning
accumulated distance from beginning of the path
derivative of kappa w.r.t s.
derivative of derivative of kappa w.r.t s.
The lane ID where the path point is on
derivative of x and y w.r.t parametric parameter t in CosThetareferenceline
A general 2D point. Its meaning and units depend on context, and must be explained in comments.
A general 3D point. Its meaning and units depend on context, and must be explained in comments.
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A point in the map reference frame. The map defines an origin, whose coordinate is (0, 0, 0). Most modules, including localization, perception, and prediction, generate results based on the map reference frame. Currently, the map uses Universal Transverse Mercator (UTM) projection. See the link below for the definition of map origin. https://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system The z field of PointENU can be omitted. If so, it is a 2D location and we do not care its height.
East from the origin, in meters.
North from the origin, in meters.
Up from the WGS-84 ellipsoid, in
A point in the global reference frame. Similar to PointENU, PointLLH allows omitting the height field for representing a 2D location.
Longitude in degrees, ranging from -180 to 180.
Latitude in degrees, ranging from -90 to 90.
WGS-84 ellipsoid height in meters.
A general polygon, points are counter clockwise
A unit quaternion that represents a spatial rotation. See the link below for details. https://en.wikipedia.org/wiki/Quaternions_and_spatial_rotation The scalar part qw can be omitted. In this case, qw should be calculated by qw = sqrt(1 - qx * qx - qy * qy - qz * qz).
speed (m/s)
acceleration (m/s^2)
jerk (m/s^3)
Used in: , ,
path point
linear velocity
in [m/s]
linear acceleration
relative time from beginning of the trajectory
longitudinal jerk
The angle between vehicle front wheel and vehicle longitudinal axis
Gaussian probability information
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Also known as "frame_id."
Also known as "child_frame_id."
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optional apollo.common.Header header = 1;
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trajectory point
The angle between vehicle front wheel and vehicle longitudinal axis
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Car center point is car reference point, i.e., center of rear axle. optional VehicleID vehicle_id = 2;
The following items are used to compute trajectory constraints in planning/control/canbus, vehicle max steer angle
vehicle max steer rate; how fast can the steering wheel turn.
vehicle min steer rate;
ratio between the turn of steering wheel and the turn of wheels
the distance between the front and back wheels
Tire effective rolling radius (vertical distance between the wheel center and the ground).
minimum differentiable vehicle speed, in m/s
minimum value get from chassis.brake, in percentage
minimum value get from chassis.throttle, in percentage
vehicle latency parameters