Safeguarding the Spectrum from Threats with Software-Defined Radios (Download)

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Dec. 15, 2025

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The electromagnetic spectrum (EMS) is more congested than ever. From airports and WiMAX centers to military and commercial satellites, unmanned aircraft, GPS jammers, and shipboard radar systems, the number of active RF signals and systems continues to grow. Whether it's a drone hobbyist or a coordinated swarm from a near-peer threat, detecting and neutralizing these activities has become increasingly difficult.

The challenge lies not only in the sheer number of signals, but also in their diversity: They range among pulsed; continuous-wave; wideband; and narrowband, low-power, intra-pulse signals, as well as their wide frequency range counterparts.

Identifying, analyzing, and protecting against these signals in real-time, and across diverse environments, requires a solution that’s both agile and resilient. This is where software-defined radios (SDRs) are stepping in.

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