What is the MARKER NUMBER in the RINEX header?
A. The MARKER NUMBER field contains a unique ID number for the GPS antenna site. E.g. the active station at Leeds (LEED) has the number 13215S001. These numbers are known as DOMES numbers and are issued by the International Earth Rotation Service (IERS). The IERS maintains a worldwide database of permanent GPS sites using DOMES numbers. The numbers are especially important for distinguishing between multiple antennae on the same site. E.g. if there was more than one antenna at Leeds the general site ID would still be LEED but each antenna would be identified by it’s unique DOMES number. A sub network of the Active stations has been accepted as an official extension of the EUREF coordinate reference frame (see separate FAQ – “Why were the Active Network station coordinates updated in February 2002?”). One of the terms of acceptance is that the stations have DOMES numbers. DOMES numbers are unique and the 4 character site ID should be unique also. Before the submission to IERS a cross ch
