This User Guide is a companion document to the OGP P1/11 Geophysical position data exchange format (OGP report number 483-1), referred to in this document as the “P1/11 Format Description”. It provides additional guidance and detail around the writing, application and use of the OGP P1/11 format, and the user is encouraged to refer to both documents when writing or reading P1/11 files. This User Guide is intended to provide context and examples to demonstrate various implementations of the format, ad does not attempt to duplicate the complete format description, although there is inevitably some overlap in content.
Originally released in 2012 to replace the UKOOA P1/90 and P2/94 formats, Version 1.1, released in August 2018, incorporates industry feedback from the first release and provides greater flexibility – without changing the fundamental format structure. For example, the format now enables the recording of land and OBC formats and additional peripheral sensor, or QC data. It also includes enhancements such as: handling channel grouping, ‘virtual’ position objects such as mid-points, global pre-plot attributes, event-based attributes, receiver and source relation records.