Navaids Test Equipment

Measuring Navigational Aids for Safer Aviation

Accurate performance measurement of navigational aids (navaids) such as ILS, DME, VOR, TACAN, and PAPI is critical to ensuring safe and reliable airport approaches. International standards, defined by ICAO and supported by organizations like Eurocontrol and NATO (STANAG), set clear guidelines for how these systems should be tested and validated.

Traditionally, flight checks have been the cornerstone of navaids verification. Today, innovative technologies such as drone-based measurements and specialized ground equipment are enhancing and complementing these airborne inspections. Intersoft Electronics supports this evolution by providing advanced tools for precise, compliant, and efficient navaids testing.

Drone Based CNS Measurements

SkyRF® is the drone platform delivering radio frequency (RF) measurement services for performance analysis on Communication, Navigation and Surveillance (CNS) systems. The dedicated equipment onboard SkyRF® and the software platform were specifically built for measuring CNS performance in the field. Measuring and analyzing signals at elevation was never before so easy, accurate and reliable. SkyRF® complements ground measurements and reduces the need for flight checks by up to 50%.

The SkyRF® CNS Measurement equipment is available for different drone platforms, including green-listed ones. Intersoft Services also offers drone-based CNS Measurements as a service.

SkyRF® brochure
Questions? Get in touch
SkyRF logo

SkyRF® Applications

Communication

  • Custom measurement services for communication systems
  • Telecom
  • Measure communication systems while flying a single predefined trajectory

NAvigation

  • Integrated ILS-DME measurement
  • Integrated VOR-DME measurement
  • PAPI
  • GBAS
  • Assess the performance of the ILS Localizer (LLZ) and the Glideslope (GS)
  • Mini-Approach test scenario flies the drone on the glidepath and allows to quickly measure LLZ and GS simultaneously
  • Live streaming of measurement data during flight

Surveillance

  • Integrated radar measurements
  • Horizontal and Vertical Polar Diagrams (HPD and VPD)
  • Predefined trajectories for multiple HPD/VPD measurements in a single flight
  • Compatible on a wide range of PSR and SSR/IFF systems
  • Live feed during measurement flight

Take CNS Measurements to the Next Level

SkyRF® is the most cost effective service for reliable and accurate CNS measurements. It operates manufacturer independent and is available for ANSP’s and military CNS users.

  • Reduce flight checks by up to 50% according to ICAO directives
  • Reduce carbon emissions
  • Faster, cheaper, less administrative and logistic overhead than real flight checks
  • Accuracy, repeatability and reliability exceeding industry standard
SkyRF® whitepaper

customer case

ANSP Enhances CNS Measurement Capabilities with SkyRF® Drone

Seeking to upgrade its Communication, Navigation and Surveillance (CNS) measurement capabilities, the Bosnia and Herzegovina Air Navigation Services Agency (BHANSA) adopted the SkyRF® drone-based measurement system. Curious about the implementation and the results? Read the full customer story.

See the Results – Download the Case Study

GroundRF Navaids Analyzer

Portable Navaids Multitool

GroundRF is your go-to solution for on-site performance verification of critical navigation aids such as ILS, DME, and VOR systems.

Designed for field engineers, technicians, and airport maintenance teams,
this compact device delivers laboratory-grade signal analysis in a rugged, portable form factor.

It is ideal for routine CNS maintenance, flight inspection support, installation, commissioning and site acceptance, as well as troubleshooting and diagnostics.

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Why Choose the Portable Navaids Receiver?

Unlike traditional spectrum analyzers or airborne systems like the CNS Drone SkyRF®, this device is ground-based and ultra-portable, offering unmatched convenience without compromising on performance. Whether you’re at a remote airstrip or a major international airport, GroundRF ensures you’re alwas in control of your navigation infrastructure.

Multi-Navaid compatibility

Supports ILS (Localizer & Glide Slope), DME, Marker Beacon, VOR and TACAN signal measurements with high accuracy.

Handheld interface

built-in, intuitive display provides real-time signal visualization, eliminating the need for external laptops or bulky equipment.

spectrum analyzer fuctionality

Offers advanced spectrum analysis capabilities tailored for CNS systems – all in the palm of your hand.

data logging and reporting

Store, review, and export measurement data for compliance documentation and trend analysis.

questions? get in touch!

Field-Ready Design Based on User Feedback

  • +8 hours battery capacity.
  • Ergonomic, light-weight design with touchscreen and membrane buttons.
  • High brightness display ensuring clear visibility under direct sunlight.
  • Robust, durable, and weather resistant.
  • Audio interface for morse analysis

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