US 12,436,262 B2
Radar detection method and related apparatus
Qiang Li, Beijing (CN); Menglin Li, Beijing (CN); and Tong Jiang, Beijing (CN)
Assigned to SHENZHEN YINWANG INTELLIGENT TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Shenzhen Yinwang Intelligent Technologies Co., Ltd., Shenzhen (CN)
Filed on Dec. 30, 2022, as Appl. No. 18/148,625.
Application 18/148,625 is a continuation of application No. PCT/CN2020/099558, filed on Jun. 30, 2020.
Prior Publication US 2023/0140139 A1, May 4, 2023
Int. Cl. G01S 13/58 (2006.01); G01S 13/89 (2006.01)
CPC G01S 13/584 (2013.01) [G01S 13/89 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A radar detection method, comprising:
transforming a beat frequency signal of a radar into a two-dimensional spectrogram by:
dividing the beat frequency signal in a time domain to obtain a plurality of segments of sub-signals, wherein a time domain length of each segment of sub-signal is 1/N of a frequency modulation period of the radar, and wherein N is greater than or equal to 2;
separately performing a Fourier transform on the plurality of segments of sub-signals to obtain frequency domain information of each of the plurality of segments of sub-signals; and
generating the two-dimensional spectrogram based on the frequency domain information of each segment of sub-signal;
intercepting, based on a time domain sliding step, a plurality of measurement units (MUs) whose time domain lengths are equal to the frequency modulation period of the radar from the two-dimensional spectrogram, wherein a length of the time domain sliding step is less than the frequency modulation period of the radar; and
determining a radar detection result based on each of the plurality of MUs.