Introduction

This Report provides relevant passive bands of interest to Earth exploration-satellite service (passive) (EESS(passive)) and space research service (passive) (SRS (passive)) in the 275-3 000 GHz frequency range and the corresponding scientific rationale.

It also provides information on EESS (passive) systems that are currently operating or planned to operate in the 275 to 3 000 GHz frequency range. Information on current and planned spaceborne passive remote sensing systems was reviewed for applicable information. Scientific literature and personnel were surveyed and consulted to determine currently known frequency bands of interest.

In addition, studies were conducted to examine possible interference to the Earth observing passive sensors from stations that may operate in the active services, both terrestrial and space-based, in the 1 000-3 000 GHz band.