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Definition
Functional Requirements
Syntax
Semantics
Conformance Testing
Performance Assessment

1      Definition

RADAR Scene Descriptors are a Data Type including the RADAR Objects of a scene, their Sub-Scenes, and their arrangement in the Scene. RADAR Scene Descriptors may be hierarchical, i.e., they may contain Objects and RADAR Scene Descriptors.

2      Functional Requirements

A RADAR Scene Descriptors instance must include:

  1. The RADAR Scene Descriptors Header.
  2. The ID of the RADAR Scene Descriptors instance.
  3. The Space/Time of the RADAR Scene Descriptors instance.

A RADAR Scene Descriptors instance may include:

  1. The ID of a Virtual Space (M-Instance) where it is or is intended to be located.
  2. The ID of a U-Environment (Real Space) where it is or is intended to be located.
  3. Time when this instance was produced.
  4. RADAR Objects in the RADAR Scene, each with their Space/Time.
  5. RADAR Sub-Scenes in the RADAR Scene, each with their Space/Time.
  6. A mixed array of Basic RADAR Scene Descriptors and RADAR Scene Descriptors.
  7. MPAI-PTF Data Exchange Metadata.
  8. Descriptive Metadata.

3      Syntax

https://schemas.mpai.community/OSD/V1.5/data/RADARSceneDescriptors.json

4      Semantics

Table 1 – Semantics of the RADAR Scene Descriptors Data Type

Label
Description
Header RADAR Scene Descriptors Header – Standard “OSD‑RSD‑Vx.y”.
MInstanceID Identifier of the M-Instance (Virtual Space) where this RADAR Scene is or is intended to be located.
UEnvironmentID Identifier of the U-Environment (Real Space) where this RADAR Scene is or is intended to be located.
RADARSceneDescriptorsID Unique identifier of this RADAR Scene Descriptors instance.
RADARSceneDescriptorsTime Time this RADAR Scene Descriptors instance was produced.
RADARSceneDescriptorsSpaceTime Space/Time where/when this RADAR Scene Descriptors instance is located.
RADARObjectCount Number of RADAR Objects in the RADAR Scene.
RADARObjects[] Set of RADAR Objects in the RADAR Scene.
    – RADARObjectSpaceTime Space/Time where/when this RADAR Object is located within the RADAR Scene.
    – ObjectIDOrObject Either the ID of a RADAR Object or the RADAR Object itself.
SubRADARSceneCount Number of RADAR Sub-Scenes in the RADAR Scene.
SubRADARScenes[] Set of RADAR Sub-Scenes in the RADAR Scene.
    – SubRADARSceneSpaceTime Space/Time where/when this RADAR Sub-Scene is located within the RADAR Scene.
    – SubRADARSceneIDOrSubRADARScene Either the ID of a RADAR Sub-Scene or the RADAR Sub-Scene itself.
BasicRADARSceneOrRADARScene A mixed array of Basic RADAR Scene Descriptors and RADAR Scene Descriptors.
DataXMData MPAI-PTF Data Exchange Metadata providing provenance, authorisation, legal, security, and confidence information associated with this RADAR Scene Descriptors instance in a trusted data exchange context.
DescrMetadata Human-readable descriptive metadata of the RADAR Scene Descriptors instance (plain text, max 2048 characters).

5      Conformance Testing

A Data instance conforms with RADAR Scene Descriptors (OSD‑RSD) if:

  1. The Data validates against the RADAR Scene Descriptors’ JSON Schema.
  2. All Data in the RADAR Scene Descriptors’ 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 MPAI-OSD V1.5 Data Types