ITU-R RS.1416 PDF

Introduction

The frequency bands near 118 and 183 GHz are allocated to the EESS on a primary basis for passive sensors as shown in Table 1. The allocation near 118 GHz is shared with other services. Near 183 GHz, the passive services have an exclusively allocated band. A need has been identified in this band to expand the frequency range over which passive measurements can be made, and therefore the passive sensors may have to share with active services in adjacent bands. It is important that frequency sharing be examined:

– to determine if currently allocated sharing at 118 GHz adequately protects the passive sensors; and

– to determine if the expansion of the range over which passive sensors operate near 183 GHz would create potential sharing problem with other services.