Article:
The recent incident involving the United States shooting down a Chinese surveillance balloon that had been lingering over US airspace for a few days has brought into focus the use of surveillance technologies and airspace laws. This event raises several pertinent questions about surveillance techniques, the purpose of such operations, and international laws governing airspace.
Understanding Surveillance Balloons
Surveillance balloons, inexpensive, elusive, and quiet, have seen use for reconnaissance purposes dating back to conflicts like the American Civil War. They gained popularity during World War I and the Cold War when the US dispatched hundreds of them to gather intelligence on the Soviet Union and China. Despite the advent of unmanned drones and satellites, many countries continue to use spy balloons.
China, which has long protested against US surveillance near its territory, claimed that the intercepted balloon was meant for research purposes but had veered off course.
The Advantage of Surveillance Balloons
In the era of satellites, surveillance balloons, fitted with high-tech imaging equipment pointed downwards, offer close-range monitoring. Unlike the lowest orbiting satellites, these lower-flying balloons can capture clearer images as they hover at approximately the same height as commercial airplanes. Beyond imaging, surveillance balloons can “gather electronic signals” and intercept communications, adding another layer to their utility.
Other Surveillance Techniques
Beyond balloons, several other surveillance methods exist. Electronic surveillance can monitor digital communication forms like emails and phone calls. Human Intelligence (HUMINT) employs individuals with access to sensitive information for surveillance purposes. Cyber espionage steals classified data to gain a competitive edge. Satellites can gather information about foreign lands, while drones equipped with sensors and cameras can fly over foreign territories for intelligence purposes.
The Concept of Air Space and Related Laws
Airspace, in international law, refers to the space above a nation’s territory, considered to belong to the governing body of that territory. The Outer Space Treaty of 1967 declares outer space, which does not include airspace, free and immune to national appropriation. However, the treaty does not set the altitude at which outer space begins and airspace ends.
Air Sovereignty allows a sovereign state to regulate its airspace usage and enforce its aviation law. This principle is established through the Paris Convention on the Regulation of Aerial Navigation (1919) and reaffirmed by later multilateral treaties.
Types of Air Space
Prohibited airspace refers to airspace where aircraft flight is forbidden, usually for security reasons. Restricted airspace, different from prohibited airspace, forbids entry for all aircraft and does not require clearance from Air Traffic Control or the controlling body of the airspace.
Previous Questions from UPSC Civil Services Examination
A question from the 2014 examination asked candidates to explain the term ‘airspace’ and discuss the implications of international civil aviation laws on the space above this airspace. It further prompted them to suggest ways to contain the associated threats and discuss the challenges posed by these laws.
Last Modified: February 20, 2024