ITU-R F.1571-2002 Mitigation techniques for use in reducing the potential for interference between airborne stations in the radionavigation service and stations in the fixed service in the band 31.8-33.4 GHz
that appropriate mitigation techniques be used, where possible or practical, in order to significantly reduce the potential for interference between stations in the FS and airborne stations in the radionavigation service (see Note 2).
ITU-R F.1571-2002 history
2002ITU-R F.1571-2002 Mitigation techniques for use in reducing the potential for interference between airborne stations in the radionavigation service and stations in the fixed service in the band 31.8-33.4 GHz