US 12,372,605 B2
Unmanned aerial vehicle detection method and apparatus with radio wave measurement
Sang Tae Kim, Sejong-si (KR); Seong Yun Lee, Sejong-si (KR); and Mi Kyung Suk, Sejong-si (KR)
Assigned to HURA CO., LTD., Daejeon (KR)
Filed by HURA CO., LTD., Daejeon (KR)
Filed on Aug. 15, 2022, as Appl. No. 17/887,584.
Claims priority of application No. 10-2021-0132101 (KR), filed on Oct. 6, 2021; and application No. 10-2022-0076281 (KR), filed on Jun. 22, 2022.
Prior Publication US 2023/0108038 A1, Apr. 6, 2023
Int. Cl. G01S 5/02 (2010.01); G01S 3/46 (2006.01)
CPC G01S 5/0278 (2013.01) [G01S 3/46 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method performed by an apparatus that detects unmanned aerial vehicles (UAVs), the method comprising:
generating a spectrogram;
determining a first region to find a direction of the UAVs in the spectrogram;
finding a direction of a first UAV of the UAVs based on signal values in the determined first region;
determining a second region to identify a type of the first UAV in the spectrogram; and
identifying the type of the first UAV based on signal values in the determined second region,
wherein the identifying the type of the first UAV comprises:
determining a receive beamforming weight for signals from the first UAV based on the detected direction of the first UAV;
performing receive beamforming on the signals from the first UAV included in the second region based on the receive beamforming weight; and
determining the type of the first UAV based on the receive-beamformed signals.