▎EW Mesh

Software-Defined Radio/ SDR

Radio whose physical-layer behavior is defined in software, enabling waveform reprogramming.

Definition

A Software-Defined Radio implements modulation, filtering, and protocol processing in software running over a generic RF front end. SDRs make it possible to load multiple waveforms onto the same hardware and to update behavior in the field, which is the foundation of cognitive radio, EW-resilient meshes, and rapid waveform innovation cycles.

Reference attributes

Key property: Reprogrammable physical layer
Enables: Cognitive radio, multi-waveform ops

Related terms

Cognitive Radio (CR)
Radio that senses its RF environment and adapts waveform, frequency, and power autonomously.
Joint Tactical Radio System (JTRS)
DoD program family for software-defined, multi-band tactical radios.
Dynamic Spectrum Access (DSA)
Real-time, opportunistic use of spectrum based on sensing and policy.

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