A database of drone radar cross sections has been made public to help those developing countermeasures. ‘We measured drone radar cross sections at multiple 26-40GHz millimetre-wave frequencies to better understand how drones can be detected, and to investigate the difference between drone models and materials in terms of scattering radio signals,” said researcher Vasilii Semkin ...

This story continues at Drone radar database made public for UAV hunters

Or just read more coverage at Electronics Weekly