2378 Septentrio Binary Format Dataset Septentrio Binary Format (SBF) is the binary output format of Septentrio receivers, with data are arranged in binary blocks referred to as SBF blocks. Each block consists of a sequence of numeric or alphanumeric fields of different types and sizes. The total block size is always a multiple of 4 bytes. This format is used in conjunction with the Septentrio PolaRxS PRO GNSS receiver, that performs over multiple frequencies and constellations. It is used for ionospheric monitoring and space weather observations. 180 The National Archives and Records Administration / The National Archives and Records Administration 18 Nov 2021 18 Nov 2021 fmt/1553 PUID sbf File extension 1897 Septentrio Binary Format BOF: offset 0-3000; Magic bytes '$@{460-3000}PolaRxS_PRO' 1 Absolute from BOF 0 460 2440{460-3000}506F6C615278535F50524F