science

Type 751 Radar

Type 751 Radar 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 Type 751 Radar rather than just read about it. In short: Type 751 radar is a Chinese navigational radar used by Chinese merchant ships and ships of Chinese navy, and it is the first navigational radar developed by Shanghai 4th Radio Factory, which subsequently also developed many other Chinese navigational radars after this humble beginning. Development begun in October 1963, with a design team led by the deputy general engineer Mr.

Key takeaways

Type 751 Radar belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Type 751 Radar to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Type 751 Radar from memory before moving on to harder problems.

Reference excerpt

Type 751 radar is a Chinese navigational radar used by Chinese merchant ships and ships of Chinese navy, and it is the first navigational radar developed by Shanghai 4th Radio Factory, which subsequently also developed many other Chinese navigational radars after this humble beginning. Development begun in October 1963, with a design team led by the deputy general engineer Mr. Zhang Yuan-Zhen (张元震) and Engineer Gu Xie-Xiang (顾燮祥). First sample was completed by the end of 1964, and in September 1965, the radar was installed on the Chinese naval ship Luoyang (ex-HMAS Bendigo (J187)). The original antenna of Type 751 radar was parabolic, and later a slotted array was also developed in the later production stage. The maximum range is 48 nautical miles, and it utilizes a 31 cm display. The radar can be integrated to electronic support measures and IFF. To support the urgent production need, Qingdao 3rd Radio Factory was also tasked with the production. By the end of production run in June 1983, 1117 sets have been produced by Shanghai 4th Radio Factory and another 228 were produced by Qingdao 3rd Radio Factory. Type 751 radar utilized vacuum tubes.

See also Chinese radars Naval Weaponry of the People's Liberation Army Navy

References

Worked examples

Example 1 — a first encounter with Type 751 Radar

Start with the simplest possible case. Write down what Type 751 Radar 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 Type 751 Radar 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 Type 751 Radar 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 Type 751 Radar

In research: Type 751 Radar 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 Type 751 Radar 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: Type 751 Radar is common in secondary-school and first-year university syllabi. It links to neighbouring topics Chinese military stubs, Military radars of China, Sea radars, so understanding it makes those chapters shorter.
In everyday life: Look for Type 751 Radar 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 Type 751 Radar in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Type 751 Radar 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 Type 751 Radar out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Type 751 Radar in simple terms?

Why does Type 751 Radar 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 Type 751 Radar?

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 Type 751 Radar.