Fmcw automotive radar incorporating modified slow time processing of fine range doppler data

A technology of input data and Doppler terms, applied in the direction of radio wave reflection/re-radiation, instruments, measuring devices, etc., can solve the problems of circuit complexity and high cost, achieve good spatial accuracy and discrimination, and low sampling rate, the effect of preventing false detection

Pending Publication Date: 2020-12-15
ARBE ROBOTICS LTD
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  • Abstract
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  • Claims
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Problems solved by technology

However, the higher chirp bandwidth presents its own problems as the complexity and cost of circuitry in the receiver is significantly higher at the higher bandwidth

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  • Fmcw automotive radar incorporating modified slow time processing of fine range doppler data
  • Fmcw automotive radar incorporating modified slow time processing of fine range doppler data
  • Fmcw automotive radar incorporating modified slow time processing of fine range doppler data

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Embodiment Construction

[0116] In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures and components have not been described in detail so as not to obscure the present invention.

[0117] Among those benefits and improvements which have been disclosed, other objects and advantages of the present invention will become apparent from the following description taken in conjunction with the accompanying drawings. Detailed embodiments of the present invention are disclosed herein. It should be understood, however, that the disclosed embodiments are merely illustrative of the invention that may be embodied in various forms. Additionally, each of these examples are presented in conjunction with various embodiments of the invention...

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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.

Description

technical field [0001] The subject matter disclosed herein relates to the field of imaging radar, sonar, ultrasound and other sensors for performing distance measurements via FMCW signals and / or angle measurements via digital beamforming and array processing, and more particularly to utilizing fractional bandwidth time complexing Systems and methods for FMCW radar with nonlinear sequences of FMCW signals and correlated range and Doppler processing. Background technique [0002] Recently, radar applications in the automotive industry have begun to emerge. High-end cars already have radars that provide drivers with parking assist and lane departure warnings. Currently, interest in autonomous vehicles is growing and it is currently considered to be a major driver in the automotive industry for the next few years. [0003] Self-driving cars offer a new perspective on the application of radar technology in automobiles. Rather than just assisting the driver, automotive radar wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/34G01S13/36G01S13/536G01S13/931
CPCG01S13/931G01S13/343G01S13/347G01S7/023G01S13/346G01S13/584G01S7/35G01S7/356G01S7/352G01S7/0232G01S7/0235G01S7/2883
Inventor 约拉姆·斯特廷尔诺姆·阿尔坎
Owner ARBE ROBOTICS LTD
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