astronomy

WGS-11

WGS-11 is a astronomy 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 WGS-11 rather than just read about it. In short: Wideband Global SATCOM 11 (WGS 11) is a United States military communications satellite to be operated by the United States Space Force as part of the Wideband Global SATCOM Program. Scheduled for launch in 2026 by a Vulcan Centaur rocket into geostationary orbit, it will be the eleventh WGS satellite.

Key takeaways

WGS-11 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect WGS-11 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of WGS-11 from memory before moving on to harder problems.

Reference excerpt

Wideband Global SATCOM 11 (WGS 11) is a United States military communications satellite to be operated by the United States Space Force as part of the Wideband Global SATCOM Program. Scheduled for launch in 2026 by a Vulcan Centaur rocket into geostationary orbit, it will be the eleventh WGS satellite. WGS 11 was originally acquired by the United States Air Force.

Overview The WGS system is composed of three principal segments: the Space Segment (Satellite), the Control (TCT) Segment (operators), and the Terminal Segment (users). Each WGS satellite provides service in multiple frequency bands, with the ability to cross-band between the two frequencies on the satellite. WGS augments other satellites. In early 2001, a satellite communications industry team led by Hughes (Boeing Satellite Systems) was selected to develop the Wideband Gapfiller Satellite (WGS) system as a successor to the Defense Satellite Communications System (DSCS) series of communications satellites. This satellite communications system is intended to support ground forces. In March 2007, the acronym WGS changed to Wideband Global SATCOM. One WGS satellite provides more SATCOM capacity than the legacy Defense Satellite Communications System (DSCS) constellation.

Satellite Description In March 2018, U.S. Congress added US $605 million in funding for two more satellites, WGS 11 and WGS 12. This resulted in the order of WGS 11+ in April 2019 for a 2023 launch. This satellite will be based on the BSS-702X (X=experimental, for experiments, BSS702) variant of Boeing's commercial 702 satellite line, providing improved signal power and bandwidth efficiency compared to earlier WGS satellites. The U.S. Space Force will launch the craft and will perform command & control functions during its 14-year life expectancy.[2] Built by Boeing Satellite Systems, WGS 11+ is based on the BSS-702X (HS376++) satellite bus. It has a mass at launch of 5,987 kg (13,199 lb) and is expected to operate for fourteen years. The spacecraft is equipped with two solar panels for generate power to its communications payload, which consists of cross-band military X-band, Ka-band transponders, + 10meters solar panels.Propulsion will be provided by an R-4D-15 apogee motor, with four XIPS-25 ion engines for station keeping.

Launch WGS 11 will launch in 2026 on a Vulcan Centaur launch vehicle from Cape Canaveral SLC-41.

References

Illustrations

Worked examples

Example 1 — a first encounter with WGS-11

Start with the simplest possible case. Write down what WGS-11 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 WGS-11 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 WGS-11 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 WGS-11

In research: WGS-11 appears in astronomy 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 WGS-11 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: WGS-11 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2024 in spaceflight, Communications satellites in geostationary orbit, USA satellites, so understanding it makes those chapters shorter.
In everyday life: Look for WGS-11 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 WGS-11 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what WGS-11 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 WGS-11 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is WGS-11 in simple terms?

Why does WGS-11 matter?

Because it connects several astronomy 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 WGS-11?

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 WGS-11.