science

GlobalEye

GlobalEye is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand GlobalEye rather than just read about it. In short: The Saab GlobalEye is a multi-role airborne early warning & control (AEW&C) platform from Swedish defence and security company Saab. In service since April 2020, GlobalEye consists of a suite of sensors using Saab's Erieye ER (Extended Range) radar and mission system, installed in the Bombardier Global 6000/6500 long-range business jet.

Key takeaways

GlobalEye belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect GlobalEye to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of GlobalEye from memory before moving on to harder problems.

Reference excerpt

The Saab GlobalEye is a multi-role airborne early warning & control (AEW&C) platform from Swedish defence and security company Saab. In service since April 2020, GlobalEye consists of a suite of sensors using Saab's Erieye ER (Extended Range) radar and mission system, installed in the Bombardier Global 6000/6500 long-range business jet.

Development In February 2016, Swedish defence company Saab announced the launch of a programme to integrate a variant of their Erieye radar system upon the Canadian Bombardier Global 6000, a long range business jet, to produce a specialised airborne early warning & control (AEW&C) aircraft. This platform is commonly referred to as GlobalEye. Saab stated that the launch was in response to expressions of interest from potential customers. Prior to the development of the GlobalEye, Saab had fitted the Erieye onto several separate AEW platforms, including the Swedish Saab 340 AEW&C and the Brazilian Embraer R-99. To facilitate the programme, Saab secured a supplemental type certificate, authorising the modification of the existing Global 6000 to the GlobalEye configuration. The manufacturing process involves the delivery of completed Global 6000s to Saab's facility in Linköping, where they undergo an extensive conversion process. Modifications include the strengthening of both the airframe and wing, enabling the carriage of the Erieye radar, along with other sensors and wingtip-mounted equipment for electronic warfare purposes. Aerodynamic changes include the adoption of an extended tailfin, along with several ventral strakes located beneath the rear fuselage. Additional power and cooling equipment is fitted. To improve survivability, a self-protection suite comprising laser and radar warning receivers, as well as countermeasures dispensers, is installed. In early 2018, Saab observed that it could produce up to three GlobalEyes per year, and could begin deliveries within three years of receiving a contract. On 23 February 2018, Saab unveiled the first GlobalEye surveillance aircraft. Days later, it began ground testing in advance of the type's first flight. On 14 March 2018, the first GlobalEye conducted its maiden flight from Linköping. Flown by Saab experimental test pilot Magnus Fredriksson, this first flight lasted for 1 hour and 46 minutes. By July 2018, the flight test programme was focused on expanding the aircraft's flight envelope. According to Saab's vice-president of airborne surveillance systems Lars Tossman, the first aircraft was being flown "more or less every day", and that no surprises had been uncovered during these flights. In January 2019, the second aircraft performed its first flight. In May 2019, it neared the end of the flight testing phase relating to certification.

Design

The primary sensor of the GlobalEye is its Erieye ER airborne early warning (AEW) radar. Weighing approximately 1 tonne, it is mounted atop the twinjet's fuselage. Saab has cited up to 450 km (216 nm) range for the AEW radar system when flown at an operating altitude of 30,000 ft, and 550 km (297 nm) at 35,000 ft. In comparison with earlier versions of the Erieye radar, Saab claims it has achieved a 70% increase in detection range, achieved via the use of new technology, such as gallium nitride transmit/receive modules. According to Saab Group, the GlobalEye is capable of detecting and tracking a combination of airborne and surface targets, the latter on both land and sea, while mission times of up to eleven hours in duration are possible. In addition to the AEW radar, the GlobalEye is equipped with additional sensors. These include the British Seaspray 7500E maritime surveillance radar, provided by Italian defence conglomerate Leonardo. The Seaspray radar features synthetic-aperture radar and ground-oriented moving target indication modes. The GlobalEye also has an electro-optical/infrared sensor, which is situated underneath the forward fuselage. Other mission equipment includes data links, voice and satellite communications and a command and control suite, the latter comprising five onboard operator stations. The GlobalEye can be operated without any onboard operators, streaming its surveillance output to ground-based stations instead. GlobalEye can simultaneously perform airborne, maritime and ground surveillance duties. It has been offered with three layers of capability: the baseline AESA and C2 system for air, land and sea surveillance, along with some electronic intelligence functions; a version with additional infrared and sea-search functionality; and one with a dedicated signals intelligence (SIGINT) system.

Operational history

United Arab Emirates In November 2015, the United Arab Emirates ordered the system, which it refers to as the Swing Role Surveillance System (SRSS), as part of a US$1.27 billion deal. In February 2017, the UAE exercised an option to procure an additional third GlobalEye in a deal worth US$238 million. According to UAE air force chief Ibrahim Naser Al Alawi, the GlobalEye should be a "strong force multiplier...an early warning radar which is capable also of detecting ballistic missiles, and to cover the whole domain as an air power". By May 2019, lead elements, including ground control stations, had been delivered to the UAE. The UAE took delivery of its first GlobalEye per schedule in April 2020 the second delivery in September 2020, and the third delivery in February 2021. In January 2021, Saab announced that it had received a follow on contract from the UAE for the supply of two more GlobalEye systems, valued at USD $1.018 billion. In September 2024 Saab announced that the fifth and final GlobalEye had been delivered to the UAE Air Force.

Operators

Current operators United Arab Emirates (5 in service) The United Arab Emirates Air Force operates 5 GlobalEye aircraft which were delivered between 2020-2024 at a total cost of SEK 23 billion. Orders: 2 in 2016 1 in 2017 2 in 2021

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with GlobalEye

Start with the simplest possible case. Write down what GlobalEye claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to GlobalEye before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about GlobalEye ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of GlobalEye

In research: GlobalEye appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses GlobalEye in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: GlobalEye is common in secondary-school and first-year university syllabi. It links to neighbouring topics AWACS aircraft, Aircraft radars, Military radars of Sweden, so understanding it makes those chapters shorter.
In everyday life: Look for GlobalEye outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study GlobalEye in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what GlobalEye means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain GlobalEye out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is GlobalEye in simple terms?

Why does GlobalEye matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study GlobalEye?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on GlobalEye.