Which of the following best characterizes the strategic advantages and technical challenges of space-based surveillance systems, particularly in the context of national security?
Show answer & explanation
Correct answer: C
Explanation
Solution: The correct answer is They enable high-resolution imagery, early warning, and missile tracking, but are vulnerable to anti-satellite (ASAT) weapons and require complex orbital coordination.
Explanation:
☛ Space-based surveillance systems provide unmatched strategic advantages by delivering high-resolution optical and radar imagery, continuous global monitoring, early warning of ballistic missile launches, and signals intelligence (SIGINT).
☛ These platforms operate across various orbits, including Low Earth Orbit (LEO) for high-resolution imaging and Geostationary Orbit (GEO) for persistent surveillance and early warning.
☛ Despite their capabilities, they face critical technical and security challenges, notably their vulnerability to Anti-Satellite (ASAT) weapons, kinetic impactors, directed-energy weapons (lasers), and cyber/electronic jamming.
☛ Furthermore, maintaining effective constellations requires complex orbital coordination, collision avoidance maneuvers against space debris, and secure ground-station communication links.
Extra Exam-Relevant Facts:
☛ Mission Shakti: On 27 March 2019, India successfully conducted its first direct-ascent Anti-Satellite (ASAT) test, destroying a live satellite in low Earth orbit and becoming the fourth country in the world with this capability.
☛ RISAT Series: India’s Radar Imaging Satellite (RISAT) series utilizes Synthetic Aperture Radar (SAR) to provide day-and-night and all-weather surveillance capabilities.
☛ Kessler Syndrome: A theoretical scenario where the density of objects in LEO is high enough that collisions between objects cause a cascade effect, severely endangering satellite operations.
☛ Defence Space Agency (DSA): India established the tri-service Defence Space Agency (DSA) in 2019, headquartered in Bengaluru, to handle space-based assets and cyber-electronic security.
Important One-Liners for Upcoming Exams:
☛ What was the code name of India's first anti-satellite missile test conducted in 2019? → Mission Shakti
☛ Which Indian satellite series is specifically designed for all-weather radar surveillance? → RISAT (Radar Imaging Satellite)
☛ Which orbit is primarily used by early warning satellites for continuous regional monitoring? → Geostationary Orbit (GEO)
☛ Where is the headquarters of India's Defence Space Agency (DSA) located? → Bengaluru
☛ Which term describes a cascade of collisions multiplying orbital space debris? → Kessler Syndrome