A sparse array signal processing method, device, circuit and imaging system
A signal processing circuit and sparse array technology, applied in the field of signal processing, can solve problems such as information loss, reduce imaging resolution, etc., and achieve the effect of improving resolution
Active Publication Date: 2021-12-28
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Since the range of a single radiating unit in the sparse array in the device cannot be adjusted, signal modulation processing for a single radiating unit will cause information loss in the modulated signal due to the limited radiation range of the radiating unit, thereby reducing the Imaging resolution
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some 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] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. Also, the terms "first", "second", et...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a sparse array signal processing method, device, circuit and imaging system. The method includes: receiving signals of a sparse array composed of sub-array units, receiving local oscillator signals, transmitting signals and transmitting local oscillator signals, through After the power division and network division, the first frequency mixing is carried out to obtain the first mixed frequency signal, and after being coupled by a coupler, the second frequency mixed is carried out to obtain the second mixed frequency signal, and the first mixed frequency signal and the obtained The second mixed frequency signal is mixed again to obtain a modulated signal, which is input to a subsequent image processor for further processing to obtain image information. The method is based on a sparse array composed of sub-array units, and proposes a corresponding method for signal processing. Based on the number of sub-array units, during signal processing, the signal is divided into power and network, and then mixed. , and finally get multiple intermediate frequency signals, which can improve the imaging resolution.
Description
technical field [0001] The invention relates to the field of signal processing, in particular to a sparse array signal processing method, device, circuit and imaging system. Background technique [0002] Millimeter-wave human body imaging technology is currently an advanced technology in the global security field. This device can effectively detect objects hidden in various parts of the human body under clothing without directly contacting the human body, especially non-metallic objects. And information such as the shape, size and location of hidden objects can be obtained from the image. [0003] After receiving the echo signal, the device needs to perform modulation processing on the echo signal to obtain a modulated signal. Since the range of a single radiating unit in the sparse array in the device cannot be adjusted, signal modulation processing for a single radiating unit will cause information loss in the modulated signal due to the limited radiation range of the rad...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01V8/00G01S13/88G01S13/89
CPCG01V8/005G01S13/887G01S13/89
Inventor 杨明辉吴亮孙晓玮
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI