1     Definition

GNSS Object refers to

  1. GNSS Data from a Global Navigation Satellite System (GNSS) obtained from an integration of a constellation of satellites that transmit position and timing data to GNSS receivers and enable them to determine the receivers’ location.
  2. GNSS Qualifier specified by MPAI-TFA providing information of Sub-Types, Formats and Attributes.

2       Functional Requirements

GNSS Data can come from four GNSSs – GPS (US), GLONASS (RU), Galileo (EU), BeiDou (CN) and two regional systems – QZSS (Japan) and IRNSS or NavIC (India). Accuracy of the Position obtained from GNSS Data depends on the GNSS system used.

3       Syntax

https://schemas.mpai.community/CAV2/V1.0/data/GNSSObject.json

4       Semantics

Label Size Description
Header N1 Bytes GNSS Object Header
– Standard-GNSSObject 9 Bytes The characters “CAV-GNO-V”
– Version N2 Bytes Major version – 1 or 2 characters
– Dot-separator 1 Byte The character “.”
– Subversion N3 Bytes Minor version – 1 or 2 characters
MInstanceID N4 Bytes Identifier of M-Instance.
GNSSObjectID N5 Bytes Identifier of the GNSS Object.
GNSSObjectSpaceTime N6 Bytes Space and Time info of Data Object.
GNSSObjectDataQualifier N7 Bytes GNSSObject Data Qualifier.
DescrMetadata N8 Bytes Descriptive Metadata