New Radar Altimeters Designed to Mitigate 5G Interference

By Caroline Rees / 26 Jan 2021

Radar AltimetersFreeFlight Systems has released a new series of radar altimeters for heavy rotorcraft, turboprops, business aviation, and military segments designed to mitigate 5G interference.

The new radar altimeters feature redesigned RF circuitry built to withstand 5G interference; this adaptation increases the sensor’s availability and reliability in challenging RF interference environments.

The new set of radar altimeters, dubbed the Terrain Series, includes the RA 5500, RA 6500, and RA 7500 radar altimeters for multiple aviation markets, beginning with the RA 6500, which is focused on Part 29 Heavy Rotorcraft and business jet markets. The RA 6500 also features comprehensive interface capabilities, including the ARINC 552 legacy interface, which allows integration with legacy analog indicators, greatly simplifying the retrofit of the system. As an additional display option, the RA 6500 can be paired with the FreeFlight Systems RAD45 standalone indicator, which meets EASA AMC1 SPA.NVIS.110(b) guidelines.

The TSO’d, DAL-B rated RA 6500 meets the FAA’s most rigorous design standards, including TSO-C87a Class A, ETSO-2C87, DO-160G, and DO-178C, ensuring commercial transport and military-grade operability.

The RA 6500’s small footprint means that it can easily be installed in place of legacy altimeters from multiple manufacturers. The existing antennas can also be used in most installations, making the RA 6500 a very straightforward retrofit solution.

“The design represents the forward-thinking, future proof technology that FreeFlight Systems is known for,” said Tim Taylor, FreeFlight Systems CEO and President. “The Terrain family is designed for robust operation in future environments and platforms while offering a simple retrofit path for replacement of older less capable altimeters in service today.”

The Terrain Series altimeters feature dual-install capability making them suitable for installation in Part 29 rotorcraft and larger fixed-wing aircraft. The feature-rich radar altimeters have an update rate of 25 times per second (25 Hz), Frequency-Modulated Continuous-Wave (FMCW) at 4.3 GHz center frequency, an altitude range of -20 to 2,500 ft., antenna response angles of up to ±20° pitch and ±30° roll, and a service ceiling of 55,000 ft. This design allows for extraordinary robust operations and reliability, true to FreeFlight Systems’ long history of high integrity and dependable avionics.

Posted by Caroline Rees Caroline co-founded Unmanned Systems Technology and has been at the forefront of the business ever since. With a Masters Degree in marketing Caroline has her finger on the pulse of all things unmanned and is committed to showcasing the very latest in unmanned technical innovation. Connect & Contact