// UNMANNED SYSTEMS AND NEXT-GEN WARFARE TERM
SDR
SDR stands for Software-Defined Radio, which is a radio communication system where components traditionally implemented in hardware, like mixers and modulators, are instead implemented by software on a computer or embedded system. This allows the radio to be highly flexible and adaptable to different communication standards and frequencies.

TECHNICAL DEFINITION
A Software-Defined Radio (SDR) is a radio communication system that leverages software on a reconfigurable hardware platform to implement physical layer components, enabling dynamic modification of waveforms, protocols, and frequency bands without hardware changes. In military contexts, SDRs are critical for electronic warfare (EW), intelligence, surveillance, and reconnaissance (ISR) operations, facilitating agile spectrum management and multi-standard interoperability.
BACKGROUND
Software-defined radio (SDR) is a radio communication system where components that conventionally have been implemented in analog hardware are instead implemented by means of software on a computer or embedded system.
READ MORE ON WIKIPEDIASYNONYMS & ALIASES
- Software Radio
- Digital Radio
- Cognitive Radio (related)
USAGE NOTE
In military and defense, SDRs are crucial for adapting to evolving threat landscapes, enabling rapid deployment of new communication modes, jamming techniques, and signal intelligence capabilities.
DEVELOPERS
Organizations developing technology related to SDR.
A global aerospace and defense technology innovator, L3Harris develops advanced software-defined radios and communication systems for military tactical, airborne, and naval applications, enhancing battlefield connectivity and electronic warfare capabilities.
Part of Raytheon Technologies, Collins Aerospace is a major supplier of advanced avionics, communication systems, and integrated solutions for military aircraft and ground platforms, leveraging SDR technology for flexible and secure communications.
A leading global defense and aerospace company, BAE Systems develops a range of electronic warfare systems, secure communication devices, and tactical radios that extensively utilize software-defined radio architectures for adaptability and future-proofing.
A prominent global aerospace and defense technology company, Northrop Grumman integrates SDR technology into various platforms, including secure communication systems, radar, and electronic warfare solutions for air, land, and sea domains.
General Dynamics Mission Systems provides mission-critical solutions for defense, intelligence, and civil clients, including secure communication systems and networking solutions built upon advanced SDR technologies for resilient command and control.
A global technology group offering innovative solutions in test and measurement, broadcast and media, cybersecurity, secure communications, and monitoring and network testing. They provide SDR-based secure radio systems for military and governmental users.
A global leader in advanced technologies, Thales designs and builds high-performance, secure, and resilient communication systems for armed forces worldwide, heavily relying on SDR technology for tactical radios and naval communications.