The problems involve technical and legal challenges.
1. Technical
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Frequency Diversity: Drones use multiple frequencies (GPS, Wi-Fi, RF), requiring jammers to cover broad spectrums or adapt dynamically.
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Anti-Jamming Technologies: Advanced drones employ frequency hopping, encryption, or AI-driven autonomy, bypassing simple jamming.
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Range and Power Constraints: Some drone jammers are low-power and have a short jamming distance, thus they cannot jam the drones effectively. Effective jamming requires proximity and sufficient power, which may be impractical for portable systems.
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Signal Collateral Damage: Jamming may disrupt unrelated devices (e.g., emergency communications, cell networks) operating on the same frequencies.
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Limited function: Some jamming systems are specialized in drone jamming and do not possess tracking and identification abilities.
2. Legal
Using RF jammers to block drone signals is illegal in many countries because it poses the threat to public and personal security.