**Work Plan for Agenda Item 1.3**[^1]

**Agenda Item 1.3**: in accordance with Resolution **747** **(WRC 03)**,
consider upgrading the radiolocation service to primary allocation
status in the bands 9 000-9 200 MHz and 9 300-9 500 MHz and extending by
up to 200 MHz the existing primary allocations to the Earth
exploration-satellite service (active) and the space research service
(active) in the band 9 500-9 800 MHz without placing undue constraint on
the services to which the bands are allocated

**Short Description**: Resolution **747** **(WRC-03)**, contains the
following two issues:

1.  possible upgrade of the radiolocation service to primary allocation
    status in the frequency bands 9 000-9 200 MHz and 9 300-9 500 MHz;

2.  possible extension of the existing primary allocations to the Earth
    exploration-satellite service (active) and the space research
    service (active) in the band 9 500-9 800 MHz.

**Status:**

**Background**: At WRC-03, Committee 7 dealt with two proposed future
WRC agenda items that were combined into this agenda item. The
radiolocation upgrades were proposed by the United States, while the
EESS (active) extension was proposed by CEPT. The United States also
proposed an accompanying Resolution with the agenda item, which was
modified to include the EESS (active) and SRS (active) aspects of the
agenda item, which then became Resolution **747**.

The United States did not propose the EESS portion of the agenda item,
although NASA and DoD could support such an extension pending the
results of the appropriate compatibility studies. It is likely that CEPT
and CITEL will support both the radiolocation upgrades as well as the
EESS and SRS extensions. Italy is the chief proponent in Europe of the
EESS (active) extension.

**Countries with a particular interest:** Italy (EESS favourable)

**Scope of Agenda Item**:

The Responsible Group for this agenda item is WP 8B, with WP 7C as the
Contributing Group and WP 3M as the Interested Group. It is anticipated
that WP 8B will deal with all of the radiolocation studies and WP 7C
will contribute characteristics and compatibility studies concerning the
EESS (active) and SRS (active) extension.

Compatibility studies will ultimately determine possible support for
this agenda item. Sharing between the EESS (active) and the
radiolocation service is generally feasible and WRC-97 allocated the
band 9500-9800 MHz to the EESS (active) and SRS (active) based on
proposals from the United States and others. Technical considerations
for this allocation were based on compatibility studies completed by
ITU-R Joint Working Party 7-8R prior to WRC-97.

**Key technical/regulatory issues to be resolved**:

Compatibility between the radiolocation and radionavigation services on
one hand and between the EESS (active) and the radiolocation,
radionavigation (taking into account RR **5.475**), and, in the United
States, meteorological aids services on the other must be determined. Is
a footnote to protect radionavigation from radiolocation and EESS
appropriate? Would such a footnote be redundant with 4.10? If there is
no not have a footnote to protect radionavigation, then in the case of
interference is the determination of what is a safety service up for
debate and discussion in the BR and RRB?

**Key policy issues to be resolved**:

1.  Continued protection of the radionavigation service could be an
    issue (TBD).

2.  Agreement for increased protection criteria for radionavigation
    service.

**Work Plan and Organization Participation**: **All issues are
government.**

Work to be completed in support of this agenda item is as follows:

1.  determine the technical characteristics, protection criteria, and
    other factors of radiolocation and radionavigation systems that
    ensure compatible operations in the bands 9 000-9 200 MHz and 9
    300-9 500 MHz;

2.  determine the technical characteristics, protection criteria, and
    other factors of radiolocation, radionavigation, EESS (active) and
    space research (active) systems that ensure compatible operations in
    the band 9 300-9 500 MHz;

3.  study the compatibility between radars of the radiolocation and
    radionavigation services in the bands 9 000-9 200 MHz and
    9 300-9 500 MHz through testing and measurements;

4.  study and conduct test measurements to determine the protection
    criteria for aeronautical radionavigation and maritime
    radionavigation systems in the bands 9 000-9 200 MHz and
    9 300-9 500 MHz;

5.  USCG, utilizing IMO standards, determine target delectability
    standards for maritime radionavigation systems (i.e. range, target
    size, probability of detection);

6.  study the compatibility between terrestrial radars of the
    radiolocation and radionavigation services, and spaceborne radars of
    the Earth exploration-satellite and space research services in the
    band 9 300-9 500 MHz; also study the compatibility between
    meteorological aids and spaceborne radars of the EESS (active)
    within the United States;

7.  in the event that sharing studies in the 9 300-9 500 MHz band lead
    to unsatisfactory conclusions which do not fully satisfy the
    requirement for an increase by 200 MHz of contiguous spectrum for
    EESS (active) and space research (active) services, carry out
    additional sharing studies in the alternative frequency range
    9 800-10 000 MHz;

8.  include the results of the above studies in one or more
    Recommendations as appropriate.

There is need for an RCS lead within each ITU-R Working Party, CITEL and
other forums to ensure that the work conducted in each of these groups
is covered and that RCS actions are coordinated.

1.  ITU-R WP 8B Fred Moorefield (DoD)

2.  ITU-R WP 7C John Zuzek (NASA)

3.  CITEL PCC.II Fred Moorefield (DOD), Glenn Feldhake (NASA), Carmelo
    Rivera (DOC)

**Work Completed:**

1.  Draft New Report Test Results Illustrating the susceptibility of
    Maritime Radionavigation Radars to Emissions from Digital
    Communication and Pulsed Systems in the Bands 2900-3100 and
    9200-9500 MHz. The U.S./U.K. test measurements will aid in
    determining the protection criteria for maritime radionavigation
    systems in the band 9200 MHz -9500 MHz

2.  Preliminary Draft New Recommendation ITU-R M. \[8B.8-10 GHz\]
    "Characteristics of and protection criteria for radars operating in
    the radiodetermination service in the frequency band 8 500-10 500
    MHz."

**Reference Material**:

1.  ITU-R Recommendations M.1313, M.1372, M.1461, SA.516-1, SA.1280,
    SA.577-5

2.  Input Documents to ITU-R, Documents 8B/282 (2000-2003 study cycle),
    7C/7R1 and 7C/18 (2003-2007 study cycle), and Document 8B/307
    (Attachment 5) (2000-2003 study cycle)

3.  WRC Resolution **7**4**7**

[^1]: Author: Fred Moorefield (DoD) & John Zuzek (NASA)