About RFeye Nodes

The original RFeye Node is still the benchmark for cost-effective, real-time 24/7 monitoring of the radio spectrum.

The range has now been extended with the recent launch of 2 new premium performance products for critical real-time applications with faster sweep speeds, improved sensitivity and extended frequency range to 8GHz or 18GHz.

Easy to deploy as fixed, portable or mobile units

RFeye Nodes are housed in a rugged, compact lightweight enclosure with optional environmental cover that provides IP67 protection. They can be discreetly deployed in-building, mast mounted outdoors or deployed in various man-portable or mobile configurations. Power consumption is low and the unit can be powered from multiple sources. Data can be accessed securely in real-time via IP, stored locally to USB drive or optional internal SSD, transmitted via the built-in modem or via Ethernet to a centralized database.

Flexible multi-user multi-mission capability

The Node’s unique architecture is capable of supporting multiple concurrent tasks and missions, as well as multiple queries from simultaneous users. Remote programming allows tasks to be assigned relative priorities and the Node is able to seamlessly execute the required tasks in the most efficient manner. These include performing sweeps and IQ captures, making spectrum occupancy measurements, alerting mask breakages and triggering alarms, logging data to memory, recording sequences for playback, measuring an Angle of Arrival (AOA) bearing or geolocating signal sources using Time Difference of Arrival (TDOA) and Power on Arrival (POA) techniques. In addition, there is no limit to the number of users who can simultaneously query the Node via IP and make independent requests to display information of interest.

Node architecture

RFeye Nodes have been designed using the latest microwave components to give the radio hardware exceptional RF performance in the following areas:

  • Low system noise figure
  • Excellent front end linearity under high signal conditions
  • Multi-stage pre-selection filtering
  • Class-leading phase noise
  • Low local oscillator re-radiation from all antenna ports
  • High dynamic range with extremely low internally generated spurious components
  • Manual and intelligent automatic gain control (iAGC) on a capture by capture basis

Only after the radio hardware section has completed its processing in the Analogue RF domain is the signal digitized and sent to the radio FPGA. This is a key differentiation between the RFeye Node and lower cost software defined radios. Without such close attention to managing the RF signals, RF performance will always be inferior.

The digitized RF data is then transferred to the baseband FPGA where it is formatted for IQ streaming or FFT processing. The IQ data and/or FFT spectral data are then made available to the embedded Linux system for further processing or routing to the network ports and/or on-board data storage using USB mounted flash drives or internal SATA SSD flash drive.

Software applications can be written to run on the Node or control the Node via external interfaces using the published APIs and software development kits.

Expansion ports are available to connect external references or output internal references and control external peripheral devices such as RFeye switches, UPS and/or SyncLinc in-building synchronization systems.

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