CN113640894A - Double-view-angle millimeter wave transceiving array - Google Patents
Double-view-angle millimeter wave transceiving array Download PDFInfo
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- CN113640894A CN113640894A CN202110742795.3A CN202110742795A CN113640894A CN 113640894 A CN113640894 A CN 113640894A CN 202110742795 A CN202110742795 A CN 202110742795A CN 113640894 A CN113640894 A CN 113640894A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
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Abstract
The invention discloses a double-view-angle millimeter wave transceiving array, wherein a plurality of double-view-angle millimeter wave transceiving subarrays are fixedly arranged on an array support frame; the dual-view millimeter wave transceiving subarray comprises a transmitting array, a lower view receiving array, an upper view receiving array, a beam control module, a first radio frequency plate and a second radio frequency plate, wherein the first radio frequency plate is connected with the second radio frequency plate, the lower view receiving array is arranged on the first radio frequency plate, the lower view receiving array and the upper view receiving array are arranged on the second radio frequency plate, the beam control module is connected with the transmitting array, the lower view receiving array and the upper view receiving array, and the beam direction of the lower view receiving array and the beam direction of the upper view receiving array form an included angle; according to the invention, the lower visual angle receiving array and the upper visual angle receiving array with certain included angles in the wave beam directions are arranged, so that the imaging of two visual angles by one-time scanning is realized, and the problems of field blind areas, low detectable rate and the like in the existing millimeter wave imaging equipment are solved.
Description
Technical Field
The invention relates to the technical field of millimeter wave equipment, in particular to a double-view-angle millimeter wave transceiving array.
Background
The millimeter wave imaging equipment has the advantages of strong penetrability, weak single photon capability, high spatial resolution, strong environmental adaptability, capability of identifying metal and nonmetal contraband, and the like, and gradually enters the field of human body safety inspection.
The known millimeter wave imaging device uses the millimeter wave three-dimensional holographic imaging technology. The product form is three types, namely cylindrical scanning equipment, planar scanning equipment and planar sparse array imaging equipment. The cylindrical surface scanning equipment adopts one-dimensional cylindrical surface anticlockwise/clockwise mechanical scanning and is matched with two-dimensional electrical scanning to realize three-dimensional holographic imaging; the plane scanning equipment adopts one-dimensional up-down plane mechanical scanning and is matched with two-dimensional electrical scanning to realize three-dimensional holographic imaging; the planar sparse array imaging equipment adopts a planar sparse array synthetic aperture technology to realize three-dimensional holographic imaging.
As is known, due to the structural characteristics of the human body, the millimeter wave scattering cross section on the surface of the human body has anisotropic characteristics, and when the millimeter wave imaging device scans and images the surface of the human body, a large blind area exists between the side surface of the human body and the area above the chest, which means that the detection rate of the area is low, and the comprehensive detection effect is affected.
In view of the above-mentioned drawbacks, the inventors of the present invention have finally obtained the present invention through a long period of research and practice.
Disclosure of Invention
In order to solve the technical defects, the technical scheme adopted by the invention is that the double-view-angle millimeter wave transceiving array comprises a plurality of double-view-angle millimeter wave transceiving subarrays and an array support frame, wherein the plurality of double-view-angle millimeter wave transceiving subarrays are fixedly arranged on the array support frame;
the dual-view millimeter wave transceiving subarray comprises a transmitting array, a lower view receiving array, an upper view receiving array, a beam control module, a first radio frequency board and a second radio frequency board, the transmitting array is used for transmitting millimeter wave signals, the lower viewing angle receiving array and the upper viewing angle receiving array are both used for receiving millimeter wave signals, the first radio frequency board is connected with the second radio frequency board, the lower visual angle receiving array is arranged on the first radio frequency board, the lower visual angle receiving array and the upper visual angle receiving array are arranged on the second radio frequency board, the transmitting array is disposed between the lower view receiving array and the upper view receiving array, the beam control module is connected with the transmitting array, the lower visual angle receiving array and the upper visual angle receiving array, and an included angle is set between the beam direction of the lower visual angle receiving array and the beam direction of the upper visual angle receiving array.
Preferably, the array arrangement directions of the transmitting array, the lower viewing angle receiving array and the upper viewing angle receiving array are parallel to each other.
Preferably, an included angle between the beam direction of the lower viewing angle receiving array and the beam direction of the upper viewing angle receiving array is set to be 5-45 °, and the beam direction of the upper viewing angle receiving array is parallel to the beam direction of the transmitting array.
Preferably, the lower viewing angle receiving array and the upper viewing angle receiving array both include a plurality of receiving unit antennas, and the adjacent receiving unit antennas are arranged at equal intervals.
Preferably, the distance between adjacent receiving unit antennas is 10 mm.
Preferably, the transmitting array comprises a plurality of transmitting unit antennas, the transmitting unit antennas are arranged at equal intervals, and the number ratio of the transmitting unit antennas in the transmitting array to the receiving unit antennas in the downward-viewing-angle receiving array is 1: 4.
Preferably, the feed port of the receiving element antenna on the lower viewing angle receiving array is arranged on the first radio frequency board; and the feed port of the transmitting unit antenna on the transmitting array and the feed port of the receiving unit antenna on the upper visual angle receiving array are both arranged on the second radio frequency board.
Preferably, the dual-view millimeter wave transceiver array is formed by connecting a plurality of the dual-view millimeter wave transceiver sub-arrays in series in a multi-stage cascade form through a cable.
Preferably, the transmitting array in each dual-view millimeter wave transceiving subarray is connected with a superior frequency integrated controller through a transmitting array radio frequency interface.
Preferably, the upper viewing angle receiving array in each of the dual-viewing angle millimeter wave transceiver sub-arrays is connected to the lower level collector through a first receiving array radio frequency interface, and the lower viewing angle receiving array is connected to the lower level collector through a second receiving array radio frequency interface.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the lower visual angle receiving array and the upper visual angle receiving array with certain included angles in the wave beam directions are arranged, so that two visual angle images can be scanned at one time, and the problems of field blind areas, low detectable rate and the like in the existing millimeter wave imaging equipment are solved.
Drawings
Fig. 1 is a schematic front view angle structure diagram of the dual-view angle millimeter wave transceiving array;
fig. 2 is a schematic diagram of a rear view structure of the dual-view millimeter wave transceiver array;
fig. 3 is a perspective structural view of the dual-view millimeter wave transceiving subarray;
FIG. 4 is a structural front view of the dual-view millimeter wave transceiver sub-array;
fig. 5 is a sectional view of the structure taken along the line a-a in fig. 4.
The figures in the drawings represent:
1-double-view millimeter wave receiving and transmitting array; 11-a second receive array radio frequency interface; 12-a transmit array radio frequency interface; 13-a first receive array radio frequency interface; 14-a cable; 100-double-view millimeter wave transceiving subarrays; 200-an array support; 101-an emitting array; 102-lower view receiving array; 103-an up view receive array; 104-a beam steering module; 105-a first radio frequency board; 106-second radio frequency board.
Detailed Description
The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
Example one
As shown in fig. 1 and fig. 2, fig. 1 is a schematic front view angle structure diagram of the dual-view millimeter wave transceiver array; fig. 2 is a schematic view of a rear view structure of the dual-view millimeter wave transceiver array.
The dual-view millimeter wave transceiver array 1 comprises a plurality of dual-view millimeter wave transceiver sub-arrays 100 and an array support frame 200, wherein the plurality of dual-view millimeter wave transceiver sub-arrays 100 are fixedly arranged on the array support frame 200.
As shown in fig. 3, 4 and 5, fig. 3 is a perspective structural view of the dual-view millimeter wave transceiver sub-array; FIG. 4 is a structural front view of the dual-view millimeter wave transceiver sub-array; fig. 5 is a sectional view of the structure taken along the line a-a in fig. 4.
The dual-view millimeter wave transceiver sub-array 100 includes a transmitting array 101, a lower view receiving array 102, an upper view receiving array 103, a beam control module 104, a first rf board 105 and a second rf board 106, where the transmitting array 101 is used for transmitting millimeter wave signals, the lower view receiving array 102 and the upper view receiving array 103 are both used for receiving millimeter wave signals, the first rf board 105 is connected to the second rf board 106, the lower view receiving array 102 is disposed on the first rf board 105, the lower view receiving array 102 and the upper view receiving array 103 are disposed on the second rf board 106, the transmitting array 101 is disposed between the lower view receiving array 102 and the upper view receiving array 103, and the beam control module 104 is connected to the transmitting array 101, the lower view receiving array 102 and the upper view receiving array 103, so as to realize the beam control module 104 to control the beams of the transmitting array 101, the receiving array 102 with lower viewing angle, and the receiving array 103 with upper viewing angle.
Preferably, the array arrangement directions of the transmitting array 101, the lower viewing angle receiving array 102 and the upper viewing angle receiving array 103 are parallel to each other.
The included angle between the beam direction of the lower viewing angle receiving array 102 and the beam direction of the upper viewing angle receiving array 103 is set to be within the range of 5-45 degrees. In this embodiment, the angle between the two beam directions is 150 °, and the beam direction of the receiving array 103 with the upper viewing angle is parallel to the beam direction of the transmitting array 101.
The lower view receiving array 102 and the upper view receiving array 103 both include a plurality of receiving unit antennas, and the distance between the receiving unit antennas in the arrays is determined according to the spatial sampling rate of the system that needs to be designed, in this embodiment, the distance between adjacent receiving unit antennas is 10 mm.
The transmitting array 101 comprises a plurality of transmitting unit antennas, the transmitting unit antennas adopt a sparse array form which is uniformly arranged at equal intervals, and the hardware cost of the equipment is favorably reduced on the premise of not influencing the imaging effect. In this embodiment, the number ratio between the transmitting unit antennas in the transmitting array 101 and the receiving unit antennas in the downward viewing angle receiving array 102 is 1: 4.
In this embodiment, the feeding port of the receiving element antenna on the downward viewing angle receiving array 102 is disposed on the first rf board 105; the feeding ports of the transmitting element antennas on the transmitting array 101 and the feeding ports of the receiving element antennas on the upward-viewing-angle receiving array 103 are both disposed on the second radio frequency board 106.
The beam control module 100 on the dual-view millimeter wave transceiver sub-array 100 communicates with an upper computer, and controls the operating states of the transmitting array 101, the lower view receiving array 102, and the upper view receiving array 103 according to a command sent by the upper computer with a certain logic.
The dual-view millimeter wave transceiver subarray 100 may be fixed to the array support frame in a linear or curved manner, and in a specific embodiment, the dual-view millimeter wave transceiver subarray is fixed to the support frame in a linear manner.
The dual-view millimeter wave transceiver array 1 is formed by connecting a plurality of the dual-view millimeter wave transceiver sub-arrays 100 in series in a multistage cascade manner through a cable 14.
The control signal of the dual-view millimeter wave transceiver sub-array 1 is in a bus transmission mode, and is accessed from the control signal input port of the first-stage dual-view millimeter wave transceiver sub-array 100, and each dual-view millimeter wave transceiver sub-array 100 receives the control signal at the same time and transmits and receives millimeter wave signals according to a specific coding rule.
The transmitting array 101 in each dual-view millimeter wave transceiver sub-array 100 is connected to an upper level frequency integrated controller through a transmitting array radio frequency interface 12, and a radio frequency input signal is independently input to the transmitting array radio frequency interface 12 by the upper level frequency integrated controller to be transmitted to each transmitting array 101.
The upper viewing angle receiving array 103 in each of the dual-viewing angle millimeter wave transceiver sub-arrays 100 is connected to a lower level collector through a first receiving array radio frequency interface 13, the lower viewing angle receiving array 102 is connected to the lower level collector through a second receiving array radio frequency interface 11, and intermediate frequency output signals of the upper viewing angle receiving array 103 and the lower viewing angle receiving array 102 are output to the lower level collector through the receiving array radio frequency interfaces.
According to the invention, the lower visual angle receiving array and the upper visual angle receiving array with certain included angles in the wave beam directions are arranged, so that two visual angle images can be scanned at one time, and the problems of field blind areas, low detectable rate and the like in the existing millimeter wave imaging equipment are solved.
The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative and not limiting. It will be understood by those skilled in the art that various changes, modifications and equivalents may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A double-view-angle millimeter wave transceiving array is characterized by comprising a plurality of double-view-angle millimeter wave transceiving subarrays and an array support frame, wherein the plurality of double-view-angle millimeter wave transceiving subarrays are fixedly arranged on the array support frame;
the dual-view millimeter wave transceiving subarray comprises a transmitting array, a lower view receiving array, an upper view receiving array, a beam control module, a first radio frequency board and a second radio frequency board, wherein the transmitting array is used for transmitting millimeter wave signals, the lower view receiving array and the upper view receiving array are all used for receiving millimeter wave signals, the first radio frequency board is connected with the second radio frequency board, the lower view receiving array is arranged on the first radio frequency board, the lower view receiving array and the upper view receiving array are arranged on the second radio frequency board, the beam control module is connected with the transmitting array, the lower view receiving array and the upper view receiving array, and the beam direction of the lower view receiving array and the beam direction of the upper view receiving array are provided with included angles.
2. The dual-view millimeter wave transceiver array according to claim 1, wherein array arrangement directions of the transmitter array, the lower-view receiver array, and the upper-view receiver array are parallel to each other.
3. The dual-view millimeter wave transceiving array of claim 2, wherein an angle between a beam direction of the lower view receiving array and a beam direction of the upper view receiving array is set to be 5 ° to 45 °, and the beam direction of the upper view receiving array is parallel to the beam direction of the transmitting array.
4. The dual-view millimeter wave transceiver array of claim 2, wherein the bottom view receiving array and the top view receiving array each comprise a plurality of receiving element antennas, and adjacent receiving element antennas are arranged at equal distances.
5. The dual-view millimeter wave transceiver array of claim 4, wherein a spacing between adjacent ones of said receiving element antennas is 10 mm.
6. The dual-view millimeter wave transceiver array of claim 4, wherein the transmitter array comprises a plurality of transmitter element antennas, adjacent transmitter element antennas are arranged at equal distances, and the number ratio of the transmitter element antennas in the transmitter array to the receiver element antennas in the down-view receiver array is 1: 4.
7. The dual-view millimeter wave transceiver array of claim 1, wherein the feed port of the receiving element antenna on the lower-view receiving array is disposed on the first radio frequency board; and the feed port of the transmitting unit antenna on the transmitting array and the feed port of the receiving unit antenna on the upper visual angle receiving array are both arranged on the second radio frequency board.
8. The dual-view millimeter wave transceiver array of claim 1, wherein a plurality of said dual-view millimeter wave transceiver sub-arrays are connected in series by a cable multi-stage cascade.
9. The dual-view millimeter wave transceiver array of claim 1, wherein the transmitter array in each of the dual-view millimeter wave transceiver sub-arrays is connected to a superior frequency integrated controller via a transmitter array radio frequency interface.
10. The dual-view millimeter wave transceiver array of claim 1, wherein the upper view receiving array in each of the dual-view millimeter wave transceiver sub-arrays is connected to a lower level collector through a first receiving array radio frequency interface, and the lower view receiving array is connected to the lower level collector through a second receiving array radio frequency interface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110742795.3A CN113640894A (en) | 2021-06-29 | 2021-06-29 | Double-view-angle millimeter wave transceiving array |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110742795.3A CN113640894A (en) | 2021-06-29 | 2021-06-29 | Double-view-angle millimeter wave transceiving array |
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Patent Citations (9)
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| US20080198063A1 (en) * | 2005-03-15 | 2008-08-21 | Innovatum, Inc. | Apparatus and method using continuous-wave radiation for detecting and locating targets hidden behind a surface |
| WO2006105977A1 (en) * | 2005-04-08 | 2006-10-12 | Smiths Heimann Gmbh | Method and device for imaging test objects by means of millimeter waves, especially for checking individuals for suspicious objects |
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