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公开(公告)号：US20230305132A1
公开(公告)日：2023-09-28
申请号：US17948227
申请日：2022-09-20
CPC分类号： G01S13/38 , G01S7/356 , G01S7/4008
摘要： In described examples, a frequency modulated continuous wave (FMCW) radar system includes an FMCW signal generator, a number N transmitters, N phase shifters, multiple receivers, and a processor. The FMCW signal generator is configured to generate FMCW chirps. Different ones of the phase shifters have different respective base phase shifts selected in response to N. The transmitter is configured to transmit the phase shifted FMCW chirps. The receivers are configured to receive an FMCW chirp reflected by an object in range of the FMCW radar system. The processor is configured to determine a location of the object in range in response to the received FMCW chirp.
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公开(公告)号：US12007462B2
公开(公告)日：2024-06-11
申请号：US17351654
申请日：2021-06-18
发明人： Karthik Subburaj , Karthik Ramasubramanian , Shailesh Joshi , Kameswaran Vengattaramane , Indu Prathapan
IPC分类号： G01S13/04 , G01S7/35 , G06F16/22 , G06F16/901 , G06F17/14
CPC分类号： G01S13/04 , G01S7/35 , G06F16/2264 , G06F16/9017 , G06F17/142
摘要： A system includes a memory configured to store a two-dimensional data structure that includes radar data arranged such that radar data of a first transmitter is separated from radar data of a second transmitter by a Doppler offset in the two-dimensional data structure. The system also includes a data fetch mechanism that includes a lookup table (LUT) applied on either of two dimensions. The lookup table is configured to store a data fetch location in the two-dimensional data structure, where the data fetch location indicates a location from which to fetch a subset of the radar data from the two-dimensional data structure and the data fetch mechanism is configured to fetch the subset of the radar data from the two-dimensional data structure based on the LUT. The system includes a processor configured to perform a fast Fourier transform (FFT) on the fetched subset of the radar data.
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