Enabling higher resolution services for the EESS by extended allocations in the 9.6GHz frequency range

Presentation to New Zealand National MtgWellington, 3 August 2011

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Extension of the allocation to EESS in the 9.5GHz range

Very high resolution radar information is a key pre-requisite for

enhanced environmental monitoring

For considerations under AI8.2 (WRC-12):

Administrations are invited to consider an extensions

of the EESS allocation by 600MHz at WRC-15

Agenda Item 1.x (WRC-15)

“To consider an extension of the current worldwide allocation to the Earth Exploration Satellite Service (EESS) (active) and the Space Research Service SRS (active) in the frequency band 9 300 – 9 900 MHz by at least 600 MHz within the frequency range 8 700 – 10 500 MHz in accordance with Resolution [EESS+600MHz](WRC-12)”.

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Typical applications provided by EESS systems

Applications and services provided by several systems worldwide comprise

Emergency response

Topographic Mapping

Forest Monitoring

Surface Movement

Change Detection

Maritime Applications

Geodesy and Cadastre

And many others

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Why future EESS systems should operate with higher bandwidth

Very high resolution mapping and monitoring is required stipulating substantial socio-economic benefit

Disaster relief and humanitarian aid actions require ad hoc and up-to-date geoinformation also from the remote parts of the globe

Airborne imaging is very often limited by remoteness of the area to be observed and cloudy weather conditions

Current radar satellites are yet too low in resolution to allow adequate infrastructure damage assessment (and consequently a rough estimate of the number of affected people) to assist first responder activities

Identification of trafficable roads, landing strips or suitable spaces to set-up first aid or refugee camps is limited by the resolution of today’s radar sensors

Support of fight against Climate Change Monitoring of deforestation and forest degradation – enabling the REDD+ process Enabling Governments in developing countries can verify that their measures against

deforestation and forest degradation have been successful even at a single tree level

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Why future EESS systems should operate with higher bandwidth

Safety of energy supply Ensuring sustainable oil and gas production by careful monitoring of sites and

managing the extraction. Monitoring the integrity of comprehensive pipeline networks - detect leakages to avoid

severe environmental pollution. Enable reliable and weather independent monitoring

Cadastre To foster the economic development of developing countries by property ownership

registration High-precision cadastre is a major pre-requisite to maintain and develop properties by

protecting agricultural and infrastructure investments Especially countries in the tropical belt suffer from substantial cloud coverage while

facing nations rapid built-up areas, growth and land cover and change of use of land EESS can support affordable, reliable and weather independent mapping capacity

A successful and sustainable integration of derived information only can be achieved in a very high resolution mode in the sub meter area to fulfill essential user requirements

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Key criteria for a potential extension of the EESS (active)

Current allocation in the ITU RR 9.3 – 9.9GHz => 600MHz

Doubling picture resolution compared to current 600MHz needs 1.2 GHz

Any extension should include the current allocation to ensure long-term continuity of

observation data already collected for several years

The new allocation should be in the 9/10 GHz range: optimum compromise between

high resolution (RF bandwidth) and all-weather propagation performance

Any extension of the allocation should be contiguous

Agenda Item should investigate sharing conditions for either 600MHz above, below, or

any other appropriate apportionment between 8.7 … 10.5 GHz

in any case the actual radar exposure time is in the order of seconds

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Current Radio Regulations in the frequency range 8.65 – 10.5 GHz

Optional extensions and radio services affected (ITU RR Ed. 2008)

8.65 8.75 8.85 8.9 9.0 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9 10.0 10.1 10.2 10.3 10.45 10.5 GHz

Option 1

Option 2

Option 3

Option 4+ or any asymetric combination around the core EESS allocation

RLS

ARNS ARN

Mar RNS RNS RNS

RNS

EESS

SRS

FS

MS

ARS

Current allocation

Potentially affected service allocations as per ITU Radio Regulations (Edition 2008)

Radiolocation Service (RLS)

Fixed Service (FS)

ARNS

Amateur Radio Service (ARS)

Mobile Service (MS) R1+ R3

Space Research Service (SRS) (active)

Earth exploration-satellite Service EESS (active)

Radionavigation Service (RNS)

potential extension potential extension

potential extension

potential extension

EESS (active) and SRS (Active)

EESS (active) and SRS (Active)

EESS (active) and SRS (Active)

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Typical operating modes of EESS systems

EESS satellites typically- perform about 15 Earth orbits per day- travel at about 500km altitude- are inclined by 97° (angle of orbital plane vs. the equatorial plane)=> Track of sub-satellite points repeats every 11 days=> Exposure times of a few seconds per snap shot

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Typical RF characteristics of 1200MHz EESS Radars

The compatibilities of similar EESS Radar systems with other radio services allocated in the band 9.3 – 9.9 GHz have been studied in Report ITU-R RS.2094

Carrier centre frequency 9.6 GHz

Transmit signal formLinear frequency modulation

“Chirp”

Signal bandwidth ≤ 1200MHz Depending on mode of operation

Pulse Repetition Frequency (PRF)

~ 5000Hz

Transmit duty cycle (DC) ~ 20 %

e.i.r.p. (peak power) 84dBWEquivalent isotropic radiated power

Peak power density on the Earth’s surface

-17 / -12 dBm/ m² Far/ near slant rage

Average acquisition time < 2 … 3% per orbit “Snapshots”

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Thank You for Your kind attention