Revision summary
Small UAVs drop arms, ammunition and narcotics across foggy and riverine borders, especially Punjab and Jammu. The operator can remain across the fence, which makes attribution hard. BSF has specialised drone response and works with police and the Narcotics Control Bureau. CIBMS adds sensors and cameras to high-risk fence stretches. Anti-drone radars, jammers and DRDO-type systems must sit with criminal cases against handlers.
Model answer
Introduction
A small unmanned aerial vehicle (UAV) can cross a fence that a person cannot. Adversaries and criminal groups have used quadcopters to drop arms, ammunition and narcotics into Indian border belts, especially along Punjab and Jammu. The threat is internal security because the payload is meant for terror modules and drug networks inside the country.
Body
The threat
- Low-cost drones fly below many older radars, at night, and from short range across a riverine or foggy border.
- Payloads have included pistols, ammunition, explosives and heroin in documented Border Security Force seizures.
- The operator can stay on the other side; attribution is slow.
- The same method can later carry better explosives or surveillance, so the problem scales.
Measures
- Border Security Force (BSF) has raised drone squads, night optics, and specialised companies; it seizes drones and payloads and works with State police and the Narcotics Control Bureau.
- Comprehensive Integrated Border Management System (CIBMS) layers fences, sensors, cameras, and command rooms on high-risk stretches so a small flight is not only a human lookout’s problem.
- Anti-drone tools: detection (radar, radio-frequency, electro-optic), and defeat (jammers, nets, spoofing, and in some forces DRDO D4-type systems and directed-energy pilots). The Ministry of Home Affairs has issued anti-drone guidelines for police and vital installations.
- Air-defence and Indian Air Force sensors cover higher and longer-range unmanned aircraft; the small commercial quadcopter is mainly a BSF–police problem.
- Legal and investigative follow-up uses Unlawful Activities (Prevention) Act and Narcotic Drugs and Psychotropic Substances Act cases so a drop is not treated as a petty smuggle.
- Gaps: cheap drones outpace jammers, civilian drones are dual-use, and riverine fog still blinds sensors. Measures must combine tech, patrol, and disruption of the handler network, not only a new gadget on the fence.
Flow diagram
flowchart TD U[Cross-border UAV] --> P[Arms ammo drugs] P --> I[Internal security] I --> B[BSF patrols seizures] I --> C[CIBMS sensors] I --> A[Anti-drone detect jam] B --> N[Handler network cases] A --> N
Conclusion
Cross-border UAVs ferry arms and drugs under the radar of a fence-era border. BSF seizures, CIBMS sensors, and anti-drone detect-and-jam systems are the present reply. They work if handlers are also caught and if the sensor layer is kept ahead of cheap aircraft.
Quick related
Students also ask
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Most of the unemployment in India is structural in nature. Examine the methodology adopted to compute unemployment in the country and suggest improvements.
Next question in the 2023 paper (Q11). View answer →
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Can a fence stop a drone?
No. A fence stops a walker. A UAV flies over it. Sensors and jammers are the relevant layer.
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Is this only a military air-defence problem?
Large UAVs are. The cheap quadcopter drop is mainly a BSF and police problem at fence height.
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