Goto Section: 25.260 | 25.262 | Table of Contents
FCC 25.261
Revised as of October 1, 2011
Goto Year:2010 |
2012
§ 25.261 Procedures for avoidance of in-line interference events for Non
Geostationary Satellite Orbit (NGSO) Satellite Network Operations in the
Fixed Satellite Service (FSS) Bands.
(a) Applicable NGSO FSS Bands. The coordination procedures in this
section apply to non-Federal-Government NGSO FSS satellite networks
operating in the following assigned frequency bands: The 28.6-29.1 GHz
or 18.8-19.3 GHz frequency bands.
(b) Definition of "In-line interference events." For purposes of this
section, an "in-line interference event" is defined as the interference
associated with an occurrence of any physical alignment of space
stations of two or more satellite networks with an operating Earth
station of one of these networks in such a way that the angular
separation between operational links of the two networks is less than
10DEG as measured at the Earth station.
(c) Default procedure. If no agreed coordination exists between two or
more satellite networks, then the bands will be divided among the
affected satellite networks involved in an in-line interference event
in accordance with the following procedure:
(1) Each of n (number of) satellite networks involved in a particular
in-line interference event shall select 1/n of the assigned spectrum
available in each frequency band for its home base spectrum. The
selection order for each satellite network shall be determined by and
be in accordance with the date that the first space station in each
satellite network is launched and operating;
(2) The affected space station(s) of the respective satellite networks
shall only operate in the selected (1/n) spectrum associated with its
satellite network, its home base spectrum, for the duration of the
in-line interference event;
(3) All affected space station(s) may resume operations throughout the
assigned frequency bands once the angular separation between the
affected space stations in the in-line interference event is again
greater than 10DEG.
(d) Coordination procedure. Any coordination procedure agreed among the
affected operating satellite networks, which allows operations of the
satellite networks when each network's respective space stations are
within the 10 degree avoidance angle associated with an in-line
interference event, shall supersede the default procedure of paragraph
(c) of this section. Coordination may be effected using information
relating to the space stations and the parameters of one or more
typical earth stations. All parties are required to coordinate in good
faith.
[ 68 FR 59129 , Oct. 14, 2003]
Goto Section: 25.260 | 25.262
Goto Year: 2010 |
2012
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