Go to CAV-TEC V1.1 Data Types

Definition
Functional Requirements
Syntax
Semantics
Conformance Testing
Performance Assessment

1    Definition

Weather Data is a Data Type representing the meteorological conditions relevant to the operation of a Connected Autonomous Vehicle, including temperature, humidity, pressure, precipitation, wind, fog, and ice.

2    Functional Requirements

Weather Data shall represent the following meteorological measurements:

  1. Temperature.
  2. Relative Humidity.
  3. Air Pressure.
  4. Ice presence.
  5. Wind Conditions.
  6. Fog.
  7. Rain.
  8. Hail.
  9. Snow.
  10. Sleet.

3    Syntax

https://schemas.mpai.community/CAV2/V1.1/data/WeatherData.json

4    Semantics

Table 1 – Semantics of the Weather Data Data Type

Label Description
Header Weather Data Header – Standard “CAV-WDT-Vx.y”.
MInstanceID Identifier of the M-Instance (Virtual Space) associated with this Weather Data instance.
UEnvironmentID Identifier of the U-Environment (Real Space) associated with this Weather Data instance.
WeatherDataID Unique identifier of this Weather Data instance.
WeatherDataTime Time this Weather Data instance was produced.
WeatherData Set of meteorological measurements.
– Temperature Air temperature.
  – Value Measured value in the unit specified by context.
  – Accuracy Absolute 1-sigma / RMS uncertainty.
  – Confidence Confidence in the measured value (0–1).
  – Unit Unit symbol (e.g., K, %RH, Pa, m/s).
– RelativeHumidity Relative humidity (%).
  – Value Measured value in the unit specified by context.
  – Accuracy Absolute 1-sigma / RMS uncertainty.
  – Confidence Confidence in the measured value (0–1).
  – Unit Unit symbol (e.g., K, %RH, Pa, m/s).
– AirPressure Air pressure (Pa).
  – Value Measured value in the unit specified by context.
  – Accuracy Absolute 1-sigma / RMS uncertainty.
  – Confidence Confidence in the measured value (0–1).
  – Unit Unit symbol (e.g., K, %RH, Pa, m/s).
– Ice Presence of ice.
  – Value Boolean value indicating presence of ice.
  – Confidence Confidence in the measured value (0–1).
– WindConditions Wind conditions as a set of wind vectors.
  – Azimuth Wind azimuth (deg, 0–360).
    – Value Measured value in the unit specified by context.
    – Accuracy Absolute 1-sigma / RMS uncertainty.
    – Confidence Confidence in the measured value (0–1).
    – Unit Unit symbol (e.g., K, %RH, Pa, m/s).
  – Elevation Wind elevation angle (deg).
    – Value Measured value in the unit specified by context.
    – Accuracy Absolute 1-sigma / RMS uncertainty.
    – Confidence Confidence in the measured value (0–1).
    – Unit Unit symbol (e.g., K, %RH, Pa, m/s).
  – Velocity Wind speed (m/s).
    – Value Measured value in the unit specified by context.
    – Accuracy Absolute 1-sigma / RMS uncertainty.
    – Confidence Confidence in the measured value (0–1).
    – Unit Unit symbol (e.g., K, %RH, Pa, m/s).
– Fog Fog density / visibility.
  – Value Measured value in the unit specified by context.
  – Accuracy Absolute 1-sigma / RMS uncertainty.
  – Confidence Confidence in the measured value (0–1).
  – Unit Unit symbol (e.g., K, %RH, Pa, m/s).
– Rain Rain precipitation rate (mm/h).
  – Value Measured value in the unit specified by context.
  – Accuracy Absolute 1-sigma / RMS uncertainty.
  – Confidence Confidence in the measured value (0–1).
  – Unit Unit symbol (e.g., K, %RH, Pa, m/s).
– Hail Hail precipitation rate (mm/h).
  – Value Measured value in the unit specified by context.
  – Accuracy Absolute 1-sigma / RMS uncertainty.
  – Confidence Confidence in the measured value (0–1).
  – Unit Unit symbol (e.g., K, %RH, Pa, m/s).
– Snow Snow precipitation rate (mm/h).
  – Value Measured value in the unit specified by context.
  – Accuracy Absolute 1-sigma / RMS uncertainty.
  – Confidence Confidence in the measured value (0–1).
  – Unit Unit symbol (e.g., K, %RH, Pa, m/s).
– Sleet Sleet precipitation rate (mm/h).
  – Value Measured value in the unit specified by context.
  – Accuracy Absolute 1-sigma / RMS uncertainty.
  – Confidence Confidence in the measured value (0–1).
  – Unit Unit symbol (e.g., K, %RH, Pa, m/s).
DataXMData MPAI-PTF Data Exchange Metadata providing provenance, authorisation, legal, security, and confidence information associated with this Weather Data instance in a trusted data exchange context.
DescrMetadata Human-readable descriptive metadata of the Weather Data instance (plain text, max 2048 characters).

5    Conformance Testing

A Data instance conforms with Weather Data (CAV-WDT) if:

  1. The Data validates against the Weather Data JSON Schema.
  2. All Data in the Weather Data JSON Schema:
    1. Have the specified type.
    2. Validate against their JSON Schemas.
    3. Conform with their Data Qualifiers.

6    Performance Assessment

Not part of this specification.

Go to CAV-TEC V1.1 Data Types