Patent status

GB 2014929.0 (filed 22 September 2020); PCT/GB2020/000075 (filed 17 September 2020)





Available to license


Project number


Related datasheet


A portable and flexible spectrum monitoring system for use in RF monitoring field trials. Conventional RF test facilities comprise fixed installations in geographically distributed locations.

In-field RF test facilities historically use permanently installed monitoring and analytical equipment with spectrum analysers and antenna systems co-located in geographically distributed locations. Data is transferred to centralised control systems via coaxial cable or Ethernet.

These systems are inflexible, difficult to adapt to changing test requirements, and require sensitive and costly equipment to be secured at multiple distributed locations.

Distributed RF Spectrum Monitoring System (DSMS)

Developed by Dstl, the DSMS is modular, flexible and portable. Spectrum analysers can be located alongside control systems in a common central location, making it easy to secure and protect these high value and sensitive items of equipment during field trials.

The modular and portable nature of the technology enables rapid deployment of multiple antennas and alternative RF test equipment in diverse geographic configurations. The system is compact and is easily transported and integrated into new trial locations.


  • Modular – the design is modular, allowing the option to use multiple antennas, and to vary RF test equipment and system configurations.
  • Easily transportable – DSMS fits into a few large Peli cases and is easily moved and integrated into new trial locations. Known equivalents are fixed and installed into a single test facility or laboratory.
  • Avoids loss of signal – the use of fibre optic transmission enables the transfer of RF over long distances with virtually no signal loss. Older test facilities use coaxial cable (no RF conversion) and have to account for signal loss which complicates and limits measurements.
  • Ease of synchronisation – the co-location of control and analysis equipment in a single control station allows the synchronisation of antenna signals. Synchronisation of remote analysers used in more conventional configurations is often difficult.
  • Scalable – the design is inherently scalable, with easy increase of computing / RF receive capacity or the addition of a RF transmit capability.
  • Low cost – the system is relatively low cost and can be used in multiple locations and configurations.