System for imaging millimeter wave arc-scanned by array antenna

Abstract

The invention relates to a system for imaging millimeter wave arc-scanned by an array antenna. The millimeter wave imaging system comprises an antenna array disc support, a servocontrol module, a frequency synthesis module, a transmitter module, two transmitting antenna arrays, two receiving antenna arrays, a receiving module, a delayed module, a signal processing module and a display and controlmodule, wherein the servocontrol module controls a driven shaft of a motor to rotate at a sinusoidal speed rate and simultaneously controls and detects the rotation angle of the antenna array disc support to lead the antenna array disc support to rotate from zero to M degrees in a clockwise manner, wherein 100 degrees <=M <=170 degrees; and the transmitting antenna arrays radiate a radio-frequency signal to an objective surface and the radio-frequency signal is reflected so as to be received by the receiving antenna arrays, the receiving module processes the an echo signal to form an intermediate frequency echo signal and then sends to the signal processing module so as to carry out three-dimensional imaging treatment on the signal, and three-dimensional image data of an object is obtained and is transferred to the display and control module. The millimeter wave imaging system provided by the invention has the beneficial effects of simple design, low cost, high picture quality, high resolution and short imaging time.

Description

technical field [0001] The invention relates to the technical field of millimeter-wave imaging, in particular to a millimeter-wave imaging system for arc-scanning array antennas. Background technique [0002] Today, with the development of mmWave technology and imaging technology, there are many applications combining these two technologies. Millimeter-wave imaging technology has mature applications in many fields, such as map remote sensing, military detection, millimeter-wave synthetic aperture radar imaging, and long-distance detection of ground, sea and air targets. With the development of science and technology, millimeter-wave devices are basically mature at home and abroad, and can be used in large-scale and low-cost applications. [0003] With the development of millimeter wave imaging technology, its application in various industries has gradually matured, and its application in short-range imaging detection is basically mature, which can realize the detection of o...

AI Technical Summary

Problems solved by technology

[0005] Using the existing millimeter-wave close-range imaging method, the image quality is poor, the resolution is low, and the imaging time is long. The millimeter-wave imaging system using the existing millimeter-wave close-range imaging method is complex in design and high in cost

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