NanoAvionics gets BROS radio-location twin CubeSat construction order

by | Apr 20, 2020 | Military space, Satellites

A consortium of Norwegian and Dutch research centres (Norwegian Defence Research Establishment (FFI), the Royal Netherlands Aerospace Centre (NLR) and Netherlands Organisation for Applied Scientific Research (TNO)) has selected satellite integrator NanoAvionics to build two nanosatellites, dubbed ‘Birkeland’ and ‘Huygens’, asthe BROS (binational radiofrequency observing satellites) twin-satellite mission. This is a military two-satellite system to detect, classify, and accurately geolocate Radio Frequency signals, including navigation radars used on ships, by combining the measurement angle of arrival (AoA) and time difference of arrival (TDOA). Simultaneous detection of pulsed radio signals by both satellites flying in tandem enables accurate geolocation during all weather conditions.

BROS system satellite. Courtesy: NanoAvionics

The BROS system’s Birkeland and Huygens satellites will both be based on NanoAvionics’ M6P nanosatellite bus with a deployable solar panel configuration, high precision attitude determination and control system (ADCS) and a propulsion system. The mass of each 6U nanosatellite will be up to 10 kilograms. The launch of the two nanosatellites is scheduled for the second quarter of 2022 when they will be placed into a polar low Earth orbit (LEO) with an altitude range of 450 to 600 km. Both will be positioned in the same orbital plane with a separation of 15-25 km, allowing the two nanosatellites to simultaneously detect emissions from radar systems. For a polar LEO orbit of 600 km altitude, the payload antenna will be able to cover any point on the Earth’s surface at least four times per day.

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