Horizon Nulling Antenna

The Affordable Solution for Resilient PNT

Delivers the highest available signal-to-noise ratio in contested environments per unit of size/volume

Helix Geospace are redefining the entry-level price point for resilient Positioning, Navigation, and Timing (PNT) with the HNA – a horizon nulling GNSS antenna. 

Jamming signals often originate at low elevations from ground-based transmitters.

By carefully designing the radiation pattern of a GNSS antenna such that it is less sensitive to signals arriving between -10° to +15° from horizon provides an effective mechanism for suppressing this interference.

Helix Geospace’s Horizon Nulling Antenna does just that, utilising a conical directivity pattern to minimise signals received at elevations below 15° (15dB rejection) whilst supporting multiple constellations & multiple bands for maximum satellite tracking (GPS L1/L5, Galileo E1/E5, and QZSS L1/L5).

Helix’s HNA is also compact (ø75mm x 52.5mm) hence providing the highest available signal-to-noise ratio in contested environments per unit of size/volume.

CRPx: Anti-Jamming System

Key benefits:

Mitigates adjacent band interference

  • Patented DielectriX™ antenna technology provides sharp frequency selectivity that tightly tunes to the GNSS bands whilst blocking adjacent band interference.

 

Reduces multipath interference

  • Excellent circular polarisation purity (low axial ratio) without the need for a ground-plane, reduces multipath interference significantly.

 

Platform independent

  • Balanced and isolated from platform ground ensures high immunity to common-mode noise and very low proximity de-tuning caused by nearby objects

 

Suitable for high accuracy applications

  • Tight phase centre and consistent group delay over wide azimuth variations enables use with carrier-phase GNSS (e.g., RTK).

HNA: Built for Resilience. Designed for the Future

Request a technical call

Need more information?

Contact us at info@helixgeospace.com

Military-Grade & Multiband full constellation L1/L2/L5 available upon request. Email us to arrange an initial discussion with our technical engineers.

For more complex GNSS-contested environments, Helix Geospace have developed a world-beating CRPA, the CRPx GNSS Anti-Jamming System – learn more here.

A UK-sovereign, high-performance solution using Helix Geospace’s patented DielectriX™ technology, the HNA delivers affordable resilient PNT in contested environments.

Helix Geospace’s HNA is suitable for all GNSS applications across land, sea and air including drones & UAVs, high-precision carrier-phase GNSS, and resilient PNT for telecoms networks and other critical national infrastructure (CNI).

  • Single or multi-band GNSS

  • Mitigates adjacent band interference
  • Reduces multipath interference
  • Platform independent
  • Suitable for high accuracy applications
  • Affordable high-performance
  • Lightweight, platform-agnostic
  • ø75mm x 52.5mm

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