Frequency Diversity Array Synthetic Aperture 3D Imaging Radar System and Imaging Method
A frequency diversity array, three-dimensional imaging technology, applied in radio wave measurement systems, instruments, measurement devices, etc., can solve problems such as difficult implementation, complex imaging algorithms, and complex synthetic aperture radar transmission systems, reducing requirements, costs, and saving. The effect of the number of radars and the simple form of the transmitted signal
Active Publication Date: 2022-07-22
GUILIN UNIV OF ELECTRONIC TECH
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] The technical problem to be solved by the present invention is that the two-dimensional planar frequency diversity array is not easy to be used in actual scenes and is difficult to realize, the traditional linear array synthetic aperture radar transmission system is complicated, and the traditional three-dimensional synthetic aperture radar imaging algorithm is complicated. Provide a frequency diversity array synthetic aperture three-dimensional imaging radar system and its target three-dimensional imaging method, the purpose is to realize multi-target three-dimensional imaging
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
[0059] The content of the present invention will be further described below in conjunction with the embodiments and the accompanying drawings, but it is not intended to limit the present invention.
[0060] refer to Figure 1-2 , the frequency diversity array synthetic aperture three-dimensional imaging radar system of the present invention consists of a linear frequency diversity array radar ( figure 1 medium rectangular solid line area) and a motion platform. The moving platform in the present invention is an aircraft, and the linear frequency diversity array radar is mounted on the aircraft.
[0061] Linear frequency diversity array radar includes transmitting part and receiving part;
[0062] The transmitting part includes a baseband frequency selection unit, a baseband signal generator, an up-conversion, an antenna selection unit and a transmitting antenna array connected in sequence;
[0063] The receiving part includes a receiving antenna array, an antenna selection ...
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 frequency diversity array synthetic aperture three-dimensional imaging radar system and an imaging method thereof. The system consists of a linear frequency diversity array radar and a moving platform (airplane); the array radar includes a transmitting part and a receiving part; The baseband frequency selection unit, baseband signal generator, up-conversion, antenna selection unit and transmitting antenna array; the receiving part includes the receiving antenna array, antenna selection unit, filter, down-conversion and imaging algorithm unit connected in sequence; linear frequency diversity array The radar is mounted on a moving platform, and the moving platform is connected with the imaging algorithm unit of the linear frequency diversity array radar. The system uses a frequency diversity array, combined with aperture synthesis, to complete the three-dimensional imaging of the target. The transmission signal form of the imaging method is simple, the range resolution can be obtained without pulse compression, and the range, azimuth and elevation images of the target can be simultaneously obtained by compensating the phase once.
Description
technical field [0001] The invention relates to the technical field of radar signal processing, in particular to a frequency diversity array synthetic aperture three-dimensional imaging radar system and an imaging method thereof. Background technique [0002] Three-dimensional Synthetic Aperture Radar (3D-SAR) introduces a linear array antenna in the vertical heading direction in the flight plane to form a real aperture, so that it has the three-dimensional resolution capability of range, azimuth and vertical heading. The imaging process is based on the traditional two-dimensional SAR imaging principle. The pulse compression technique is used to obtain high range resolution, the synthetic aperture principle is used to obtain azimuth high resolution, and the real aperture is used to obtain vertical heading high resolution. However, in terms of system implementation, due to the need to transmit broadband signals, for real aperture arrays, it is difficult to separate the signal...
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): G01S13/90
Inventor 廖可非李晶晶欧阳缮廖桂生蒋俊正杜毅
Owner GUILIN UNIV OF ELECTRONIC TECH