Which pulse size is typically used for navigation and close-range operations?

• A. Long
• B. Very Short
• C. Short
• D. Medium

Answer: (D)

Pulse size in radar is all about energy and range resolution. For navigation and close-range operations, you need both reliable detection at practical navigation distances and enough ability to distinguish targets that are near one another. A medium-length pulse provides a balanced compromise: it carries enough energy to detect objects at typical navigation ranges, while still offering better range resolution than a long pulse. Long pulses can reach farther but sacrifice the ability to separate nearby targets, and very short pulses improve resolution at the cost of reduced detection range and weaker returns. So the medium pulse is typically used because it handles the everyday needs of navigating safely while still performing adequately at close range.