Munich 01-Dec-2021

Rohde & Schwarz demonstrates robust data link communication for rotary wing aircraft

On behalf of the German armed forces, Rohde & Schwarz has performed a comprehensive series of measurements on three different types of rotorcraft to investigate the influence of rotors on radio waves.

Rohde & Schwarz, together with ESG Elektroniksystem- und Logistik-GmbH and representatives of the German armed forces (Bundeswehr)successfully carried out stationary tests on the premises of the Bundeswehr Technical Center for Aircraft and Aeronautical Equipment (WTD 61) in Manching. The influence of rotors on radio waves was tested on two types of helicopters, operational with the Bundeswehr, the CH53 and Tiger, as well as on the rotary wing UMAT R-350 UAV from ESG.

Piloted and unpiloted rotary-wing aircraft of the Bundeswehr need to be able to send data links through one or more rotor planes, where interference can by caused by rotor blade modulation. The successfully completed tests demonstrated how robust the radios are against level drops, phase shifts and diffraction at rotor blades' edges; while digital voice and data transmission was possible at the highest sensitivity. In addition, a comprehensive set of data was collected to develop robust waveforms for broadband data transmission in the SHF frequency band.

"Equipping today's armed forces with secure, up-to-date solutions for radio networking is essential for command and control effectiveness during deployment," explains Mathias Pauli, Vice President Secure Communications at Rohde & Schwarz. "These tests, on behalf of the German armed forces, investigated the influence of rotors from different types of helicopters on radio links. We achieved the goal of proving the suitability of the existing VHF/UHF and 5 GHz radio systems for operational deployment."

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Rohde & Schwarz is a leading supplier of solutions in the fields of test and measurement, broadcast and media, aerospace | defense | security and networks and cybersecurity. The technology group's innovative communications, information and security products help industry and government customers ensure a safer and connected world. On June 30, 2022, Rohde & Schwarz had about 13,000 employees worldwide. The independent group achieved a net revenue of EUR 2.53 billion in the 2021/2022 fiscal year (July to June). The company is headquartered in Munich, Germany, and has subsidiaries in more than 70 countries, with regional hubs in Asia and America.

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