CUDA-based MIMO millimeter wave radar three-dimensional imaging method and system
A millimeter-wave radar and three-dimensional imaging technology, applied in the field of radar, can solve the problem of low calculation efficiency of millimeter-wave security inspection imaging, achieve the effect of reducing redundant calculations and achieving simple and high-resolution
Pending Publication Date: 2021-05-07
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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[0005] The purpose of the present invention is to provide a CUDA-based MIMO millimeter-wave radar three-dimensional imaging method to solve the problem of low calculation efficiency of millimeter-wave security imaging
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[0052] 以下结合附图和具体实施例对本发明作进一步详细说明,根据下面说明和权利要求书,本发明的优点和特征将更清楚。需要说明的是,附图均采用非常简化的形式且均适用非精准的比例,仅用以方便、明晰地辅助说明本发明实施例的目的。
[0053] 需要说明的是,为了清楚地说明本发明的内容,本发明特举多个实施例以进一步阐释本发明的不同实现方式,其中,该多个实施例是列举式而非穷举式。此外,为了说明的简洁,前实施例中已提及的内容往往在后实施例中予以省略,因此,后实施例中未提及的内容可相应参考前实施例。
[0054] 虽然该发明可以以多种形式的修改和替换来扩展,说明书中也列出了一些具体的实施图例并进行详细阐述。应当理解的是,发明者的出发点不是将该发明限于所阐述的特定实施例,正相反,发明者的出发点在于保护所有给予由本权利声明定义的精神或范围内进行的改进、等效替换和修改。同样的元模块件号码可能被用于所有附图以代表相同的或类似的部分。
[0055] Please refer to Figure 1 to Figure 6 ,本发明提供一种基于CUDA的MIMO毫米波雷达三维成像方法,包括:
[0056] 步骤S101,通过MIMO阵列对图像待检测区域进行聚焦区域自动定位处理,所述MIMO阵列由若干边界物理阵列构成,每个边界物理阵列分布物理阵元,所述物理阵元包括发射阵元与接收阵元,根据待检测区域的范围决定所述边界物理阵列单元的数量;
[0057] 步骤S102,读取MIMO阵列采集的目标数据,采用CUDA并行计算加速所述目标数据,所述CUDA并行计算通过多个CUDA kernel功能模块进行处理,将MIMO接收数据导入GPU显存,进行信号处理,从GPU显存中转出到主机内存并通过OpenCV进行成像展示。
[0058] 在一个实施例中,通过MIMO阵列对待检测区域进行聚焦区域自动定位处理,包括:
[0059] MIMO稀疏阵列采集目标信号数据;
[0060] 对所述目标信号数据进行单双基校准得到等效单基收发虚拟阵元接收信号;
[0061] 在水平向和高度向对所述等效单基收发虚拟阵元接收信号进行二维傅里叶变换;
[0062] 对变换后的信号进行相位因子补偿,得到补偿信号;
[0063] 将所述补偿信号进行水平向和高...
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The invention discloses a CUDA-based MIMO millimeter wave radar three-dimensional imaging method and system. The method comprises the steps that: automatic focusing area positioning processing is carried out on a to-be-detected area of an image through an MIMO array, wherein the MIMO array is composed of a plurality of boundary physical arrays, physical array elements are distributed in each boundary physical array and comprise transmitting array elements and receiving array elements, and the number of boundary physical array units is determined according to the range of the to-be-detected area; and target data collected by the MIMO array is read, CUDA parallel computing is adopted to accelerate the target data, processing is carried out through a plurality of CUDA kernel function modules, received data of the MIMO is imported into a GPU video memory, and signal processing is carried out. According to the invention, redundant calculation is reduced, high resolution is guaranteed, the parallel calculation efficiency is extremely high, CUDA kernel function modularization is carried out in each signal processing process in the algorithm, and good portability and universality are achieved.
Description
technical field [0001] The invention belongs to the technical field of radar, in particular to a CUDA-based MIMO millimeter-wave radar three-dimensional imaging method and system. Background technique [0002] Due to the advantages of short-range active millimeter-wave radar imaging, which can penetrate clothing, non-ionization without harming human health, and non-contact and non-perceptual detection, it has gradually become the development trend of security inspection methods in scenarios with high security requirements. The short-range active millimeter-wave radar imaging technology can be used to image the human body three-dimensionally and detect various dangerous and suspicious items such as pistols, knives, powders, and liquids. [0003] In recent years, some millimeter-wave imaging security inspection technologies and systems with excellent performance have been researched one after another in the world. The three-dimensional holographic imaging technology and syste...
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IPC IPC(8): G01S13/89
CPCG01S13/89
Inventor 陈振洪熊娣郭洧华李文扬崔婧
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT