scope:

This Recommended Standard is applicable only to the message format and content, not to its transmission. The method of transmitting the message between exchange partners could be based on a CCSDS data transfer protocol, a file based transfer protocol such as SFTP, stream-oriented media, or another secure transmission mechanism. In general, the transmission mechanism and the technical data content of a PRM are independent. It is recommended that the transmission method be documented in an Interface Control Document (ICD) between the exchange partners.

PURPOSE

The Pointing Request Message (PRM) allows space agencies and operators to exchange information in a standardized format about a requested pointing of a spacecraft. These can be requested (sequences of) changes to the attitude of the spacecraft or to an articulated spacecraft component.