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RODAR for Robust Dual-Antenna Receiver

RoDAR the Equaliser: Anti-jam for everyone

This year, Hexagon| NovAtel introduced Powerful anti-jam capabilities,
a new and unrestricted feature for dual-antenna OEM7 GNSS receiver cards.
Previously accessible only to defence industry and selected customers,
high level interference resiliency is now available for anyone needing.
The name of this new NovAtel firmware is RoDAR, which stands for
Robust Dual-Antenna Receiver.
Anyone with a dual-antenna OEM7 receiver such as
can add powerful anti-jamming mitigation to their operational arsenal.
As an example of newly enabled use cases, the designers and/or operators of small unmanned aerial vehicles (UAVs) weighing less than 5 kg (12 lb) can now carry out commercial survey and mapping tasks in environments rife with interference and jamming.
The critical importance of reduced weight and battery use would have eliminated anti-jamming from consideration in such cases.
Now, a robust anti-jamming solution is  achievable with commercially available firmware without changing or adding Hardware.

RoDAR joins-and greatly expands

NovAtel’s GNSS Resilience and Integrity Technology (GRIT) suite of

anti-jamming tools, available through the firmware.

RoDAR interference mitigation constitutes a separate solution from NovAtel’s GPS Anti-Jam Technology (GAJT), which is export controlled technology designed to be used as additional equipment .

As a reference product for anti-jamming, GAJT uses CRPA antennas to connect to any existing GNSS receiver.

RoDAR, on the other hand, is available on OEM7 receivers. It offers a low SWaP anti-jam solution for users and powerful protection from jamming at the same power consumption as an ITK enabled PwrPak7. 

The RoDAR receiver maintains high quality positioning under a much higher interfering power level than the unprotected receiver and then recovers much quicker, after being jammed out.
RoDAR firmware can be installed on NovAtel’s PwrPak7D dual-antenna receiver card through a firmware upgrade.

• The key to RoDAR's capability comes from the use of dual-antennas 


RoDAR the best and most powerful anti-jamming and anti-spoofing solution for non-military applications

The key to RoDAR’s capability comes from the use of dual-antennas, which enable signal processing in the spatial domain. The antennas need to be spaced only 10 cm (4 in) apart. RoDAR uses the two antennas to identify interference/jamming sources and builds resiliency against jamming and spoofing attempts.


The spatial anti-jam protection provided by RoDAR not only detects but also mitigates all interference types.

Processing in the spatial domain, however, expands this resiliency to both narrowband and wideband interference

RoDAR jamming detection and mitigation doesn’t require post-event data analysis to identify whether the signal was spoofed or jammed or not. RoDAR keeps an active lookout while tracking the signal, so users can go on doing their job. It’s almost a no-brainer solution. The user doesn’t have to worry about jamming. The mitigation is happening right there in the receiver and at really high speed

It’s unique to NovAtel that built it into its MINOS7 application-specific integrated circuit (ASIC) for the OEM7 years ago.

Now it is brought to life.

RoDAR offers 30 dB of nominal protection. It is not subject to ITAR or Canada Controlled Goods regulation.

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