A millimeter-wave imaging radar one-dimensional array antenna and timing control method

A millimeter wave imaging and array antenna technology, applied in antennas, antenna arrays, electromagnetic wave detection, etc., can solve the problem of high cost of millimeter wave antenna units and signal channels, long time consumption of two-dimensional mechanical scanning, and high cost of two-dimensional mechanical scanning. It can ensure the quality of radar data, save manufacturing costs and process complexity, and reduce the difficulty of calibration.

Active Publication Date: 2018-10-09
CNGC INST NO 206 OF CHINA ARMS IND GRP
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Problems solved by technology

Two-dimensional mechanical scanning takes a long time, and the cost of two-dimensional mechanical scanning is high
Compared with the cost and process of conventional radar systems, the cost of millimeter-wave antenna units and signal channels is very high, and the process is more complicated

Method used

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  • A millimeter-wave imaging radar one-dimensional array antenna and timing control method
  • A millimeter-wave imaging radar one-dimensional array antenna and timing control method
  • A millimeter-wave imaging radar one-dimensional array antenna and timing control method

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Embodiment Construction

[0031] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0032] The object of the present invention is to design a low-cost multi-receiving and multi-transmitting array antenna in order to realize millimeter-wave radar imaging detection. Using this design method, the number of antenna elements and signal channels can be greatly reduced without reducing the quality of radar imaging. The array antennas are arranged horizontally, and each antenna unit is controlled by a switch array to radiate electromagnetic waves and receive target echoes. At the same time, the servo system controls the array antenna to scan in the vertical direction. The radar echo is processed into a two-dimensional image containing target information through the antenna, signal channel, ADC, etc.

[0033] The specific method of the present invention is: in order to realize the imaging detection of concealed objects, the radar system needs to perfor...

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Abstract

The invention discloses a millimeter-wave imaging radar one-dimensional array antenna and a sequential control method. The antenna is applied to millimeter-wave security check imaging radars, for realizing emission and receiving of multichannel radar signals. According to the compact one-dimensional array antenna provided by the invention, under the control of an electronic switch, emission antennas and receiving antennas are combined to form different transceiving antenna combinations arranged at equal distances, and data obtained by a linearly distributed "phase center", through signal processing and correction, is equivalent to data obtained by transceiving units formed by combining numerous actual transceiving array antennas. By use of the method provided by the invention, enormous emission and receiving signal paths and antennas needed by one-dimensional electric scanning imaging can be saved, a complex structural design of a radar front end is avoided, the correction difficulty of the radar front end is reduced, the radar manufacturing cost is decreased, and the detection need is realized. The antenna and the method can be applied to millimeter wave security check imaging radars and can also be applied to array antennas of radars at other wave bands.

Description

technical field [0001] The invention is applied in the technical field of millimeter-wave security inspection imaging radar, and is a multi-transmission and multi-reception linear array antenna. The radar detects and images hidden objects through antenna scanning and other processing. Background technique [0002] In recent years, terrorist activities at home and abroad have been rampant, and terrorists have used various concealed means to carry dangerous goods into the key departments of the country to carry out terrorist activities. Security testing in airports, stations, government agencies and other departments is a necessary means to ensure the safety of the people. [0003] Traditional security detection systems (metal detectors and X-ray scanners) have certain limitations in terms of human body safety and perspective imaging. The technologies that have been applied to the actual security inspection mainly include: X-ray, infrared, terahertz, ultra-wideband, sound wav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/00H01Q3/24G01V3/12
CPCG01V3/12H01Q3/24H01Q21/00
Inventor 魏志强李春化强勇毕海霞袁晶姜世波周子超闫兴伟
Owner CNGC INST NO 206 OF CHINA ARMS IND GRP
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