1 Definition
Spatial Data is the set of data produced by the Motion Actuation Subsystem that describes the Spatial Attitude of the Connected Autonomous Vehicle (CAV). It captures positional evolution, motion intensity, and inclination of the CAV in relation to its environment, enabling downstream AIMs to interpret movement, acceleration, and orientation consistently.
2 Functional Requirements
The unit of measure of Spatial Data are:
| Name | Unit of measure |
| Odometer Data | Scalar whose coefficients are expressed in metres (m) |
| Speedometer Data | Scalar whose coefficients are expressed in metres/second (m/s) |
| Accelerometer Data | Scalar whose coefficients are expressed in metres/second/second (m/s2) |
| Inclinometer Data | Vector of CAV inclination in the direction of travel and perpendicular to it, in degrees (°) |
3 Syntax
https://schemas.mpai.community/CAV2/V1.1/data/SpatialData.json
4 Semantics
| Label | Description |
| Header | Spatial Data Header – Standard “CAV-SPD-V” |
| SpatialDataID | ID of Spatial Data. |
| SpaceTime | Spatial Attitude and Time. |
| SpatialData | Set of Spatial Data. |
| – OdometerData | Data from Odometer. |
| – SpeedometerData | Data form Speedometer. |
| – AccelerometerData | Data from Accelerometer. |
| – InclinometerData | Data from Inclinometer. |
| DataExchangeMetadata |
Specific DataExchangeMetadata may be used, but not all DEM fields are required.
|
|---|---|
| Trace | Provenance trace providing Source and Time per AIF rules. |
| DescrMetadata | Descriptive Metadata |
