Surveillance And Advanced Defence Technologies

* THAAD is a missile defense system developed by the United States to intercept and destroy short, medium, and intermediate-range ballistic missiles during their terminal phase of flight. * It is designed to defend against threats both within and outside the Earth's atmosphere, providing protection against potential missile attacks. * THAAD has been deployed by the United States military and has also been sold to allied countries such as South Korea and Saudi Arabia.

It is a delivery system that uses a low Earth orbit to bypass early warning systems and deliver warheads on targets very quickly. FOBS launches a warhead into a low Earth orbit trajectory instead of a full ballistic missile arc. These systems are typically designed to detect missiles launched on high ballistic trajectories. A FOBS warhead in a low orbit might be harder to detect until it re-enters the atmosphere for its final approach to the target. Due to the orbital path, the time between re-entry and target impact can be shorter compared to a traditional ballistic missile attack.

* **Statement 1 is incorrect:** This is typically done using **X-ray scanners** or advanced imaging technologies like **millimeter wave scanners**, not traditional radar. * **Statement 2 is correct:** Radars, specifically weather radars, are commonly used to monitor precipitation. They can detect rain, snow, and other weather conditions by bouncing radio waves off precipitation particles. * **Statement 3 is correct:** Radars can be used to track the migration of birds and other animals. They are often used in ornithological studies to monitor bird migration patterns.