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One-bit signal single snapshot direction-of-arrival estimation method and related components

A technology of direction of arrival estimation and bit signal, which is applied to the field of a single snapshot direction of arrival estimation method of one-bit signal and related components, and can solve the problems that the real-time processing capability of the system needs to be improved, the quality of estimation needs to be improved, and the amount of data is large. , to achieve the effect of improving real-time processing capability, reducing design complexity, and improving estimation quality

Active Publication Date: 2020-10-16
SHENZHEN UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to provide a single-snapshot direction-of-arrival estimation method and related components of a one-bit signal, aiming to solve the problem of the direction-of-arrival estimation obtained by single-snapshot processing in the prior art with a large amount of data for signal acquisition and processing The quality of the system needs to be improved and the real-time processing ability of the system needs to be improved

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  • One-bit signal single snapshot direction-of-arrival estimation method and related components
  • One-bit signal single snapshot direction-of-arrival estimation method and related components
  • One-bit signal single snapshot direction-of-arrival estimation method and related components

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[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.

[0038] It should also be understood that the terminology used in th...

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Abstract

The invention discloses a one-bit signal single snapshot direction-of-arrival estimation method and related components. According to the method, the characteristics of frequency modulation one-bit quantitative sampling and one-bit signal single-snapshot direction-of-arrival estimation are combined; echo signals received by the front end of an array radar system are firstly subjected to dechirpingprocessing and frequency shift processing, then frequency modulation one-bit quantization is carried out, AD sampling is carried out, and then direction-of-arrival estimation of a detected target is carried out in a signal processing system at the rear end of the array radar by adopting single sampling snapshot. One-bit quantitative sampling at the front end of the array radar is highly matched with single-snapshot direction-of-arrival DOA estimation of one-bit signals at the rear end of the array radar; the structure of an array angle measurement radar system can be simplified, the cost of data acquisition, transmission, storage and processing is reduced, the design complexity of the system is reduced, and the real-time processing capacity of the system is improved. Accurate one-bit signal single-snapshot direction-of-arrival estimation is realized, and the super-resolution direction-of-arrival estimation quality is improved.

Description

technical field [0001] The invention relates to the field of radar system applications, in particular to a method for estimating the direction of arrival of a single-shot signal with one bit and related components. Background technique [0002] At present, most of the data acquisition modules used in radar systems use 12-bit (12bit) or 16-bit (16bit) high-precision AD sampling; however, with the increase in signal bandwidth and the number of receiving channels of array radar antennas, the burden of data acquisition, transmission, and processing is also continuously increasing. For example, according to the Nyquist sampling theorem, sampling a radar echo signal with a bandwidth of 1G Hz requires a sampling rate of 2G Hz / s. If each signal sample is quantized to 16 bits, the ADC rate needs to be 4GB / s. A medium-sized hard disk can be filled in one minute. For array radars with multiple receiving channels, the amount of collected data increases. [0003] In addition, when the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41G06F17/16G06F17/14
CPCG01S7/418G01S7/414G01S7/411G06F17/16G06F17/14Y02A90/10
Inventor 赵博袁伟健黄磊潘天伦李强侯万幸蒯成玲
Owner SHENZHEN UNIV
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