Which of the following statements with regard to drone swarms is/are correct ?

1. They use Terahertz band of frequency to communicate with the command centre.
2. Individual drones in the swarm can communicate with other drones in the swarm.
3. GPS Spoofing is a commonly used technique to counter drone swarm attack.

Select the answer using the code given below :

Question

Which of the following statements with regard to drone swarms is/are correct ?

1. They use Terahertz band of frequency to communicate with the command centre.
2. Individual drones in the swarm can communicate with other drones in the swarm.
3. GPS Spoofing is a commonly used technique to counter drone swarm attack.

Select the answer using the code given below :

Accepted Answer

B. Unmanned Aerial Vehicle swarms utilize RF bands or SATCOM for command communication rather than the experimental Terahertz band. Electronic Warfare units commonly deploy GPS spoofing to counter swarms.

Let's evaluate the operational technology of drone swarms based on **Ministry of Defence Drone Warfare Manuals**:

*   **Statement 1 is Incorrect:** Drones rely on standard **Radio Frequency (RF) bands** (like UHF, S-band) or **Satellite Communications (SATCOM)** to maintain long-range contact with command centres. The **Terahertz (THz) band** is highly experimental; because its waves suffer severe atmospheric absorption, it is strictly limited to ultra-short-range research, making it impossible for long-distance command links.
*   **Statement 2 is Correct:** A drone swarm is defined by its decentralized, collective AI intelligence. Drones actively form ad-hoc mesh networks to communicate directly with one another, allowing them to adjust formations and avoid collisions without human intervention.
*   **Statement 3 is Correct:** In Electronic Warfare (EW), **GPS Spoofing** is a primary defensive countermeasure. By broadcasting counterfeit satellite signals, defenders can override a drone's navigation system, forcing the swarm off-course or triggering automated emergency landings.

**Conclusion:** Statements 2 and 3 are scientifically accurate.

Answer

A. 1 only

Incorrect because: The examiner deliberately pairs a futuristic, buzzword-heavy technology ('Terahertz band') with a modern military concept ('drone swarms') to trick candidates who lack a fundamental understanding of radio wave physics and attenuation.

Answer

C. 1 and 2 only

Incorrect option. This combination is unsupported by the primary citations.

Answer

D. 1, 2 and 3

Incorrect.

Modern Electronic and Unmanned Warfare

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Quick Recall

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Examiner's Trap

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