Invention Grant
- Patent Title: FMCW automotive radar incorporating nonlinear frequency hopping sequence of fractional bandwidth multiband chirps
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Application No.: US17048576Application Date: 2019-05-06
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Publication No.: US11609303B2Publication Date: 2023-03-21
- Inventor: Yoram Stettiner , Noam Arkind
- Applicant: Arbe Robotics Ltd.
- Applicant Address: IL Tel Aviv
- Assignee: Arbe Robotics Ltd.
- Current Assignee: Arbe Robotics Ltd.
- Current Assignee Address: IL Tel Aviv
- Agency: Zaretsky Group PC
- Agent Howard Zaretsky
- Priority: IL259190 20180507
- International Application: PCT/IL2019/050512 WO 20190506
- International Announcement: WO2019/215732 WO 20191114
- Main IPC: G01S7/35
- IPC: G01S7/35 ; G01S7/02 ; G01S13/34 ; G01S13/58 ; G01S13/931

Abstract:
A novel and useful system and method by which radar angle and range resolution are significantly improved without increasing complexity in critical hardware parts. A multi-pulse methodology is described in which each pulse contains partial angular and range information consisting of a portion of the total CPI bandwidth, termed multiband chirp. Each chirp has significantly reduced fractional bandwidth relative to monoband processing. Each chirp contains angular information that fills only a portion of the ‘virtual array’, while the full virtual array information is contained across the CPI. This is done using only a single transmission antenna per pulse, thus significantly simplifying MIMO hardware realization, referred to as antenna-multiplexing (AM). Techniques for generating the multiband chirps as well as receiving and generating improved fine range-Doppler data maps. A windowing technique deployed in the transmitter as opposed to the receiver is also disclosed.
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