United States of America

DRAFT PROPOSALS FOR THE WORK OF THE CONFERENCE[^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 without placing undue constraint on the
services to which the bands are allocated;

**The 200 MHz extension of the primary EESS (active) and SRS (active)
allocations in the 9500-9800 MHz band**

**Background Information:** The band 9 500-9 800 MHz is allocated on a
primary basis to the Earth exploration-satellite (EESS) (active), space
research (SRS) (active), radiolocation and radionavigation services. In
order to satisfy requirements for increased resolution of global
environmental and land use monitoring and terrain mapping of planetary
surfaces, EESS (active) and the SRS (active) allocations require an
increase of 200 MHz.

The ITU-R studied the compatibility between EESS (active) and the
existing services in the two bands identified by Resolution **747
(WRC-03)** for consideration as extension bands.

Results of ITU-R tests and measurements indicate that representative
radiolocation and radionavigation radars do not suffer any performance
degradation due to any of the representative EESS (active) waveforms.
Results of various ITU-R compatibility studies combined with these test
and measurements indicate that sharing is feasible in the additional 200
MHz of spectrum between the EESS (active) and existing services in
either the 9 300-9 500 MHz band or the 9 800-10 000 MHz band. Since the
SRS (active) systems operate in the vicinity of planets and celestial
bodies other than the Earth, these systems need not show compatibility
with Earth-based systems.

The proposal provides for an extension of 200 MHz to the EESS (active)
and SRS (active). It extends the protection given in RR **5.476A** to
the radiolocation and radionavigation services in the existing
9 500-9 800 MHz band to this extension. Given that the extension is only
required for wideband systems that could not operate within the existing
allocation, the proposal restricts the use of the extension band to
wideband systems.

## Proposal

**USA/ /01 MOD**

8 500-10 000 MHz

+----------------------+----------------------+-----------------------+
| Allocation to        |                      |                       |
| services             |                      |                       |
+----------------------+----------------------+-----------------------+
| Region 1             | Region 2             | Region 3              |
+----------------------+----------------------+-----------------------+
| **.....**            |                      |                       |
+----------------------+----------------------+-----------------------+
| **9 300-9 500**      |                      |                       |
| [EARTH               |                      |                       |
| E                    |                      |                       |
| XPLORATION-SATELLITE |                      |                       |
| (                    |                      |                       |
| active)]{.underline} |                      |                       |
|                      |                      |                       |
| RADIONAVIGATION      |                      |                       |
| 5.476                |                      |                       |
|                      |                      |                       |
| Radiolocation        |                      |                       |
|                      |                      |                       |
| [SPACE RESEARCH      |                      |                       |
| (                    |                      |                       |
| active)]{.underline} |                      |                       |
|                      |                      |                       |
| 5.427 5.474 5.475    |                      |                       |
| [MOD 5.476A ADD      |                      |                       |
| 5.XXX]{.underline}   |                      |                       |
+----------------------+----------------------+-----------------------+
| **9 500-9 800**      |                      |                       |
| EARTH                |                      |                       |
| E                    |                      |                       |
| XPLORATION-SATELLITE |                      |                       |
| (active)             |                      |                       |
|                      |                      |                       |
| RADIOLOCATION        |                      |                       |
|                      |                      |                       |
| RADIONAVIGATION      |                      |                       |
|                      |                      |                       |
| SPACE RESEARCH       |                      |                       |
| (active)             |                      |                       |
|                      |                      |                       |
| [MOD]{.underline}    |                      |                       |
| 5.476A               |                      |                       |
+----------------------+----------------------+-----------------------+
| **9 800-10 000**     |                      |                       |
| RADIOLOCATION        |                      |                       |
|                      |                      |                       |
| Fixed                |                      |                       |
|                      |                      |                       |
| 5.477 5.478 5.479    |                      |                       |
+----------------------+----------------------+-----------------------+

**Reasons**: Provides a worldwide contiguous primary allocation to meet
the requirements of EESS (active) and SRS (active) systems for global
environmental monitoring and surface terrain mapping.

**USA/ /02 MOD**

**5.476A** In the band 9 [3]{.underline}~~5~~00-9 800 MHz, stations in
the Earth exploration-satellite service (active) and space research
service (active) shall not cause harmful interference to, or constrain
the use and development of, stations of the radionavigation and
radiolocation services.     (WRC-~~97~~[07]{.underline})

**Reasons:** Extends the provisions of RR **5.476A** in the existing
9 500-9 800 MHz band to the 9 300-9 500 band.

**USA/ /03 ADD**

**5.XXX** The use of the band 9 300-9 500 MHz by Earth
exploration-satellite service (active) and space research service
(active) is limited to systems that cannot be accommodated within the
9 500-9 800 MHz band and that require bandwidths larger than 300 MHz.

**Reasons:** The extension is only required for wideband systems that
cannot operate within the existing 9 500 - 9 800 MHz allocation.

**USA/ /04 SUP**

RESOLUTION 747 (WRC-03)

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, and\
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

**Reasons:** As a consequence to the completion of agenda item 1.3 at
WRC-07, Resolution **747** can be suppressed.

[^1]: The United States has previously adopted a proposal concerning the
    radiolocation part of this agenda item covering some of the same
    frequency bands as this proposal. This proposal is in addition to
    that earlier proposal.