science

SMART-L

SMART-L 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 SMART-L rather than just read about it. In short: SMART-L (Signaal Multibeam Acquisition Radar for Tracking, L band) is a long-range naval search radar introduced in 2002 by Thales Nederland, formerly Hollandse Signaalapparaten (Signaal). Design The digital antenna array has 24 elements; all are used for reception, while 16 are used for creating virtual receiver beams through digital beamforming.

Key takeaways

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

Reference excerpt

SMART-L (Signaal Multibeam Acquisition Radar for Tracking, L band) is a long-range naval search radar introduced in 2002 by Thales Nederland, formerly Hollandse Signaalapparaten (Signaal).

Design The digital antenna array has 24 elements; all are used for reception, while 16 are used for creating virtual receiver beams through digital beamforming. The beams' vertical elevation, and compensation for ship movement, is done electronically. Horizontal training is done by mechanically rotating the entire array. As designed, SMART-L has a maximum range of 400 km (220 nmi) against patrol aircraft, and 65 km (35 nmi) against stealthy missiles. A software upgrade, Extended Long Range (ELR) Mode, extends the maximum range for the detection of ballistic missiles to over 2000 km, since 2018 all four Zeven Provincien class Frigates of the Royal Netherlands Navy have been equipped with the update. On the 25th of September 2017, as part of the exercise Formidable Shield 2017 the SMART-L MM radar system mounted on the test tower at the Thales premises in Hengelo, detected and tracked a ballistic missile launched from the Hebrides in Scotland at an average range of more than 1500 km without difficulties. The Thales SMART-L Multi Mission radar in Hengelo detected the target as soon as it appeared over the horizon and maintained a stable track for more than 300 seconds. The track quality was sufficient to enable Launch On Remote by BMD-capable naval ships.

Variants SMART-L SMART-L MM/N (Multi-mission, Naval) SMART-L MM/F (Multi-mission, Fixed) S1850M

Specifications Antenna system: Dimensions; 8.4 × 4 × 4.4 m (28 × 13 × 14 ft), 7,800 kg (17,200 lb) Number of antenna elements: 24 (16 transceivers, 8 receivers) Number of beams formed: 16 Beamwidth 2.2° horizontal, 0–70° vertical Polarization: vertical Frequency: L band Rotational speed: 12 rpm IFF system integrated, D band Maximum detection ranges: Stealth missiles: 65 km (35 nmi) Patrol aircraft: 400 km (220 nmi) Ballistic missiles:2000 km after software upgrade. Maximal numbers of tracked targets: Airborne: 1000 Seaborne: 100

Users

Illustrations

Worked examples

Example 1 — a first encounter with SMART-L

Start with the simplest possible case. Write down what SMART-L 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 SMART-L 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 SMART-L 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 SMART-L

In research: SMART-L 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 SMART-L 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: SMART-L is common in secondary-school and first-year university syllabi. It links to neighbouring topics Military equipment introduced in the 2000s, Military radars of the Netherlands, Sea radars, so understanding it makes those chapters shorter.
In everyday life: Look for SMART-L 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 SMART-L in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what SMART-L 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 SMART-L out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SMART-L in simple terms?

SMART-L (Signaal Multibeam Acquisition Radar for Tracking, L band) is a long-range naval search radar introduced in 2002 by Thales Nederland, formerly Hollandse Signaalapparaten (Signaal). Design The digital antenna array has 24 elements; all are used for reception, while 16 are used for creating v…

Why does SMART-L 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 SMART-L?

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 SMART-L.