Raytheon Sentinel

Sentinel R1ASTORRaytheon Sentinel R.1Sentinel R.1Bombardier SentinelR1 SentinelRaytheon Sentinel R1SentinelSentinel R1s
The Raytheon Sentinel is an airborne battlefield and ground surveillance aircraft operated by the Royal Air Force.wikipedia
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Northrop Grumman E-8 Joint STARS

E-8 Joint STARSJSTARSE-8C Joint STARS
The Sentinel is interoperable with other allied systems such as JSTARS and the NATO Alliance Ground Surveillance (AGS) system.
Bombardier is considering offering the Global 6000, in use with the Royal Air Force as the Raytheon Sentinel and the USAF as the E-11A airborne communications relay.

Airborne ground surveillance

ground scanning radar systemover ground targetsair-to-ground radar
The Raytheon Sentinel is an airborne battlefield and ground surveillance aircraft operated by the Royal Air Force.

Surveillance aircraft

reconnaissanceaerial surveillancesurveillance
The Raytheon Sentinel is an airborne battlefield and ground surveillance aircraft operated by the Royal Air Force.

Bombardier Global Express

Bombardier Global 5000Bombardier Global 6000Global Express
Based on the Bombardier Global Express ultra long range business jet, it was adapted by Raytheon to meet the RAF's requirements. The Sentinel R1 is a modified Bombardier Global Express powered by two Rolls-Royce BR700 turbofan engines.

Royal Air Force

RAFairmanR.A.F.
The Raytheon Sentinel is an airborne battlefield and ground surveillance aircraft operated by the Royal Air Force. The aircraft entered operational service with V (Army Co-operation) Squadron of the Royal Air Force based at RAF Waddington and flew its first operational sortie over Afghanistan on 15 Nov 2008.
The Sentinel R1 (formally known as ASTOR – Airborne STand-Off Radar) provides a ground radar-surveillance platform based on the Bombardier Global Express long range business jet.

Strategic Defence and Security Review 2015

2015 Strategic Defence and Security ReviewStrategic Defence and Security ReviewStrategic Defence and Security Review in 2015
The 2010 decision was reversed in 2014 by Prime Minister David Cameron and in the 2015 SDSR, the British government announced that the type's retirement would be delayed and that it would remain in service "into the next decade".

No. 5 Squadron RAF

No. 5 Squadron RFCNo. 5 Squadron5 Squadron
The aircraft entered operational service with V (Army Co-operation) Squadron of the Royal Air Force based at RAF Waddington and flew its first operational sortie over Afghanistan on 15 Nov 2008.
Since its reformation on 1 April 2004, it has operated the Raytheon Sentinel R.1 Airborne STand-Off Radar (ASTOR) aircraft.

RAF Waddington

WaddingtonRoyal Air Force WaddingtonWaddington airfield
The aircraft entered operational service with V (Army Co-operation) Squadron of the Royal Air Force based at RAF Waddington and flew its first operational sortie over Afghanistan on 15 Nov 2008.
The station is the RAF's Intelligence Surveillance Target Acquisition and Reconnaissance (ISTAR) hub and is home to a fleet of aircraft composed of the Sentry AEW1, Sentinel R1, Shadow R1, RC-135W Rivet Joint and operating base for the RAF's MQ-9 Reaper.

Active electronically scanned array

AESAAESA radaractive phased array
It uses AESA active electronically scanned array technology.

Strategic Defence and Security Review 2010

Strategic Defence and Security Review2010 Strategic Defence and Security ReviewStrategic Defence and Security Review of 2010
In 2010 the UK Conservative-Liberal Democrat coalition government's Strategic Defence and Security Review announced its intention to "withdraw the Sentinel airborne ground surveillance aircraft once it is no longer required to support operations in Afghanistan."

Operation Ellamy

LibyaEllamyLibya in 2011
Its role above Libya in 2011 was described as "pivotal" by the head of the RAF.

No. 54 Squadron RAF

No. 54 Squadron54 SquadronNo. 54 Squadron RFC
On 1 September 2005 it took on the role of Intelligence, Surveillance and Reconnaissance (ISR) Operational Conversion Unit, responsible for training all RAF crews assigned to the E-3D Sentry AEW1 and the Nimrod R1 and the Sentinel R1 as well as running the Qualified Weapons Instructor Intelligence, Surveillance and Reconnaissance Course (QWI ISR).

International military intervention against ISIL

Military intervention against ISILMilitary intervention against the Islamic State of Iraq and the LevantWar on ISIL
On 26 March 2015, the MOD announced the deployment of two Sentinel aircraft to provide surveillance to coalition forces fighting as part of the Military intervention against ISIL.
The Royal Air Force has deployed Sentinel R1, Sentry AEW1, RC-135W Rivet Joint and Shadow R1 aircraft to gather surveillance, in addition to Tornado GR4 and MQ-9 Reaper strike aircraft.

Synthetic-aperture radar

synthetic aperture radarSARsynthetic aperture
The main radar is a Raytheon dual-mode synthetic aperture radar / moving target indication (SAR/MTI) radar known as Sentinel Dual Mode Radar Sensor (DMRS).
In February 2009, the Sentinel R1 surveillance aircraft entered service in the RAF, equipped with the SAR-based Airborne Stand-Off Radar (ASTOR) system.

No. 56 Squadron RAF

No. 56 Squadron56 SquadronNo. 56 Squadron RFC
Upon their move to Waddington, the Firebirds initially tested and evaluated the: Boeing E-3D Sentry AEW.1; Raytheon Sentinel R.1; Hawker Siddeley Nimrod R.1, MR.2 and BAE Systems Nimrod MRA.4.

Raytheon

Raytheon CompanySubmarine Signal CompanyRaytheon Corporation
Based on the Bombardier Global Express ultra long range business jet, it was adapted by Raytheon to meet the RAF's requirements.

British Army

ArmyBritishBritish troops
Originally known as the ASTOR (Airborne STand-Off Radar) programme the aircraft is operated by a RAF squadron manned by both air force and army personnel.

Alliance Ground Surveillance

Alliance Ground Surveillance (AGS)
The Sentinel is interoperable with other allied systems such as JSTARS and the NATO Alliance Ground Surveillance (AGS) system.

Government of the United Kingdom

British GovernmentUK GovernmentGovernment
The 2010 decision was reversed in 2014 by Prime Minister David Cameron and in the 2015 SDSR, the British government announced that the type's retirement would be delayed and that it would remain in service "into the next decade".

Britten-Norman BN-2 Islander

Britten-Norman IslanderBritten Norman IslanderIslander
ASTOR has its roots in the British Army's Corps Airborne Stand-Off Radar (CASTOR) programme which in 1984 modified a Britten-Norman Islander (G-DLRA/ZG989) with a large nose radome for battlefield surveillance.

Gulf War

Operation Desert StormPersian Gulf WarOperation Desert Shield
The 1991 Gulf War confirmed the requirement for such an aircraft, but the end of the Cold War made funding difficult.

Rolls-Royce BR700

BR700BR710Rolls-Royce BR710
The Sentinel R1 is a modified Bombardier Global Express powered by two Rolls-Royce BR700 turbofan engines.

Turbofan

high-bypass turbofanturbofan engineturbofans
The Sentinel R1 is a modified Bombardier Global Express powered by two Rolls-Royce BR700 turbofan engines.

Link 16

Link-16Link1616
The Sentinel cockpit has a centrally housed, pull-down screen capable of displaying a moving map, Link 16 datalink information and defensive aids subsystem (DASS) data.

Battle

firefightBattlesskirmishes
While the image analysts can analyse the images on board the aircraft it is expected that, unlike the JSTARS, the actual battle management will occur on the ground.