RRI Series of Research Radars

AiRadar Inc. offers fully compatible software defined Research Radar Interferometers.

Our Research Radar Interferometers (RRI) are all fully multi-mission capable with performance varying due to the number of elements and apertures present as detailed below. Our RRI’s come preprogrammed with a given set of modes typical for the type of research radar purchased to get you capturing data right out of the box. RRI’s come with the appropriate components of the AiRadar Software Ecosystem (See our Software Section and our Technology Section for a more comprehensive description) which allows for easy programming of the radar within the bounds of the radar mode/type selected. Our common RRI hardware supports these modes and types of radar instrument:

Real Aperture Radars (RAR)

  • Forward looking
  • Side Looking
  • Low Probability of Intercept
  • Multi Static Radars

Synthetic Aperture Radars (SAR)

Real Aperture CTFM Capabilities

A full suite of Transmit Waveforms. Linear and Non Linear FMCW, up to 4GHz BW. Specific Transmit waveforms for maximizing Probability of Detection, Resolving Doppler Ambiguities, Maximizing Doppler Bandwidth, Maximizing Doppler Resolution. Transmit linearity and amplitude control supports less common codes such as Huffman and Multi-Carrier Signals. Transmitter Beam Main Lobe Shape and Sidelobe control through Linear (Phase and Amplitude) excitation. Dynamic Control of Transmit power to maintain minimal SNR. Advanced irregular scan patterns. Ability to address a “Random Access Beam Space”, thus covering the entire space in an unpredictable manner. These scanning sequences may be PseudoRandom Sequences of almost arbitrary length. Extreme Frequency Agility, in CTFM Pulse Shape and Parameters, Non-Linear FM, Up/Down Slope changes from pulse to pulse and within pulse, etc. Monostatic/Bistatic/Multistatic operation with aiLPI & two or more RRI-100’s (or RRI-200 or 400’s), executing the same Tx/Rx/Beam sequence or different sequences. In multi or bistatic operation no wired synchronization is required; the GNSS 1PPS sync jitter is 30ns rms. As an option all Rx channels are brought out as raw InPhase and Quadrature Data. Operating center frequency may be adjusted from the design center frequency of 66GHz. The housings can be tailored for specific applications to meet specific mass and operating environments should that be required. All of our RRI research radars come in a triple base line interferometric arrangement with:

  • True Azimuth Zoom
  • Nominal Operating Frequency of Research Unit: 66GHz
  • Maximum Operating Bandwidth (full performance): 4GHz
  • Maximum Operating Bandwidth, (-3db Performance): 8GHz

Research Radar Models

The RRI array MIMO Configuration and Common Features:

  • 6 Linear azimuth arrays (3 Tx and 3 Rx) arranged as 3 vertical interferometers;
  • 2 medium baseline (14cm and 14.5cm, one long baseline (28.5cm).
  • One synthetic double difference baseline of ~1 wavelength.
  • PCIe interface for GPU
  • Transmit power per Antenna Array element: +11dBm.
  • AiRadar Software Ecosystem support.

Research Radar Models


  • 64 elements in each of 6 azimuth arrays,
  • Four 16 channel analog beamformers (one per aperture) per array,
  • Four Digital Azimuth Apertures per array (with optional raw I and Q outputs).
  • Realized gain = 27dB
  • Total Transmit Power/EIRP: 57dBmi (Non FCC Compliant)
  • Noise Figure: 7dB


  • 128 elements in each of 6 azimuth arrays,
  • Eight 16 channel analog beamformers (one per aperture) per array,
  • Eight Digital Azimuth Apertures per array (with optional raw I and Q outputs).
  • Realized gain = 30 dB
  • Total Transmit Power/EIRP: 63 dBmi (Non FCC Compliant)
  • Noise Figure 7db


  • 256 elements in each of 6 azimuth arrays,
  • Sixteen 16 channel analog beamformers (one per aperture) per array,
  • Sixteen Digital Azimuth Apertures per array (with optional raw I and Q outputs).
  • Realized gain = 33dB
  • Total Transmit Power/EIRP: 69 dBmi (Non FCC Compliant)
  • Noise Figure: 7dB

The RRI series can be configured to be any multiple of 64 elements per array as an option. Please enquire for alternate module counts.

There is a wide spectrum of radar solutions to very difficult problems. aiRadars’ business proposition trades significant technical risks in exchange for licensing fees.  We provide you with the tools to solve these problems rapidly, develop products rapidly, and get to market rapidly. All of your program’s systems will have been validated and verified on aiRadars’ proven standardized hardware and software platforms avoiding a build from scratch effort and all the risk that entails.  Developing AESA radars has never been easier.


What's New