CN116294809A - Radio frequency/infrared/laser three-mode common-caliber composite target simulation device - Google Patents
Radio frequency/infrared/laser three-mode common-caliber composite target simulation device Download PDFInfo
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- CN116294809A CN116294809A CN202211089795.9A CN202211089795A CN116294809A CN 116294809 A CN116294809 A CN 116294809A CN 202211089795 A CN202211089795 A CN 202211089795A CN 116294809 A CN116294809 A CN 116294809A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G3/00—Aiming or laying means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G3/00—Aiming or laying means
- F41G3/32—Devices for testing or checking
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Abstract
The invention provides a radio frequency/infrared/laser three-mode common-caliber composite target simulation device, wherein a plane perspective mirror consists of a medium substrate, a radio frequency calculation holographic structure and an optical reflection film, and the phase center of a radio frequency feed source is positioned on the focal point of the plane perspective mirror. The infrared source is located on the focal plane of the infrared collimating lens. The laser source is positioned on the focal plane of the laser collimating lens. The radio frequency beam emitted by the radio frequency feed source irradiates the plane transparent and reflecting mirror, and after entering the plane transparent and reflecting mirror, the beam is converted into plane wave by the radio frequency calculation holographic structure and is deflected and emitted. The infrared source is collimated into parallel light by the infrared collimating lens, and is reflected by the optical film on the surface of the plane transparent reflecting mirror, the laser source is collimated into parallel light by the laser collimating lens, and the parallel light passes through the calculation holographic structure of the plane transparent reflecting mirror, the medium substrate and the optical film. The infrared parallel light, the laser parallel light and the transmitted radio frequency beam form a composite plane wave. The invention has compact structure, high integration level and small occupied space.
Description
Technical Field
The invention relates to the field of intersection of electromagnetism and optics, in particular to a radio frequency/infrared/laser three-mode common-caliber composite target simulation device.
Background
The radio frequency/infrared/laser composite system has the characteristics of a radio frequency and an optical system, so that the advantage complementation of three electromagnetic wave bands can be realized, and the radio frequency/infrared/laser composite system is increasingly applied to the civil and military fields such as composite detection, composite guidance and composite communication. Also, as the three-mode common-caliber composite system spans two electromagnetic wave bands of radio frequency and optics, the system is subjected to composite test and simulation in a laboratory at the same time, which brings difficulty. The plane wave from the same direction of the same target radiation/scattering from infinity is needed to be simulated in the limited space of a laboratory, and the plane wave comprises a radio frequency plane wave, a laser plane wave and an infrared plane wave in space at the same time, so that the three waves form a composite plane wave. The quality of the composite plane wave determines the accuracy of the test and simulation.
The generation of the three-mode composite plane wave generally adopts a two-by-two composite means of two beam composite devices, such as a millimeter wave (Ka wave band), long-wave infrared (8-12 μm) and near infrared (1.064 μm) laser three-mode composite target simulation device of a red stone technology test center of the American army aviation missile research and development center, firstly, a diffuse reflection screen beam composite device is utilized to composite millimeter waves and lasers, and then millimeter wave/laser composite beams are subjected to medium substrate plating with infrared reflection films and then are composited with infrared beams (Gareri, J.P., G.H.Ballard, J.W.Morris, et al application of scene projection technologies at the AMRDEC SSDD HWIL facilities.2012.). The two-by-two compounding approach results in a complete set of compound target simulation systems that are difficult to compress in size and weight. In addition, the generation of plane waves needs to meet far field conditions, and the diffuse reflection mode of laser can only approximate to infinite plane waves, so that a large laboratory space is needed. In order to avoid the defects, a radio frequency/infrared/laser three-mode common-caliber composite target simulation device capable of simulating a composite plane wave field in a compact space is provided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a radio frequency/infrared/laser three-mode common-caliber composite target simulation device.
The invention provides a radio frequency/infrared/laser three-mode common-caliber composite target simulation device, which comprises a radio frequency feed source, a plane lens, an infrared source, an infrared collimating lens, a laser source and a laser collimating lens, wherein:
the phase center of the radio frequency feed source is positioned on the focal point of the plane lens reflector, the infrared source is positioned on the focal plane of the infrared collimating lens, and the laser source is positioned on the focal plane of the laser collimating lens;
the radio frequency beam emitted by the radio frequency feed source irradiates the plane transparent and reflecting mirror, and after entering the plane transparent and reflecting mirror, the beam is converted into plane wave by the radio frequency calculation holographic structure and is deflected and emitted;
the infrared source is collimated into parallel light by an infrared collimating lens and is reflected by a plane transparent reflecting mirror surface optical film;
the laser source is collimated into parallel light by the laser collimating lens, and the parallel light passes through the calculation holographic structure of the planar lens-reflector, the medium substrate and the optical film;
the infrared parallel light, the laser parallel light and the transmitted radio frequency beam form a composite plane wave.
Preferably, the planar transflector is in the shape of a flat plate;
the plane transflective mirror comprises a dielectric substrate, a radio frequency calculation holographic structure and an optical film, wherein:
one surface of the medium substrate is plated with a radio frequency calculation holographic structure, and the other surface is plated with an optical reflection film;
the surface of the medium substrate on which the radiation of the radio frequency feed source is incident is plated with a radio frequency calculation holographic structure, and the other surface, namely the light beam incident surface, is plated with an optical reflection film;
the plane transflector converts incident radio frequency radiation into compact plane waves for emission; the incident radio frequency plane wave is turned and emergent; the incident parallel light is reflected or transmitted at the same incident angle.
Preferably, the radio frequency feed source adopts a corrugated horn, a pyramid horn or a microstrip antenna, and radio frequency beams emitted by the radio frequency feed source form a cutting field in an effective caliber.
Preferably, the infrared source is a blackbody, xenon, halogen, LED or LD light source, or modulated output optical radiation of a modulating device.
Preferably, the laser source is a solid state laser, a semiconductor laser or a fiber laser.
Preferably, the infrared collimating lens and the laser collimating lens adopt fixed focus lenses or zoom lenses.
Preferably, the dielectric substrate of the planar transflector is made of inorganic material which transmits laser, and the surface of the material can be polished and can be plated with optical films and radio frequency calculation holographic structures.
Preferably, the radio frequency calculation holographic structure distribution is generated by computer calculation through a radio frequency feed source in the electromagnetic field distribution of a plane transparent mirror and plane waves in the required emergent direction through a holographic theory;
according to the calculated pattern, a metal film structure or other high-conductivity film structure is plated on the non-transmission radio frequency and laser part, and a radio frequency and laser high-permeability film is plated on the transmission radio frequency and laser part.
Preferably, the optical film is a multilayer dielectric film, and is plated by different dielectric materials.
Preferably, the radio frequency beam emitted by the radio frequency feed source is converted into plane wave through the radio frequency calculation holographic structure and enters the medium substrate and the optical reflection film, the incident electric axis is perpendicular to the radio frequency calculation holographic structure, and the included angle between the electric axis of the emergent plane wave and the normal line is theta TR ；
Infrared light wave emitted by infrared source is collimated into parallel light by infrared collimating lens, the parallel light propagates along infrared axis, and infrared light is emittedThe angle between the optical axis and the normal is theta iO And θ is as follows iO ＝θ TR The infrared light axis is reflected by the optical film to be the direction of the composite axis;
the laser emitted by the laser source is collimated into parallel light by the laser collimating lens, the parallel light propagates along the laser optical axis, and after being transmitted by the plane transparent reflecting mirror, the parallel light propagates along the composite axis together with the infrared and radio frequency beams to form a composite plane wave.
Compared with the prior art, the invention has the following beneficial effects:
1. the infrared source is collimated into parallel light by the infrared collimating lens and then reflected by the plane transparent reflecting mirror; the laser source is collimated into parallel light through the laser collimating lens and then transmitted through the plane transparent reflecting mirror; the radio frequency feed source is positioned on the focal point of the plane-transparent reflector calculation holographic structure, radio frequency radiation emitted by the feed source is converted into plane waves by the holographic structure, and the propagation direction (electric axis) of the plane waves is consistent with the propagation direction (optical axis) of infrared and laser parallel light, so that the composite plane waves are formed.
2. The invention combines the advantages of the traditional wave beam combiner and the structure to realize the plane wave field. Compact structure, high integration level and small occupied space.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a radio frequency/infrared/laser three-mode common-caliber composite target simulation device.
Fig. 2 is a schematic diagram of a partial radio frequency computing hologram structure.
The figure shows:
radio frequency feed source 1
Electric shaft 3
Radio frequency calculation holographic structure 4
Dielectric substrate 5
Infrared source 7
Infrared parallel light 9
Laser optical axis 13
First included angle 15
Second included angle 16
Normal 17
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
As shown in fig. 1 and 2, the invention provides a radio frequency/infrared/laser three-mode common-caliber composite target simulation device, and the principle is as shown in fig. 1: the simulation device mainly comprises a radio frequency feed source 1, a plane transparent mirror 14, an infrared source 7, an infrared collimating lens 8, a laser source 11 and a laser collimating lens 12. The phase center of the radio frequency feed source 1 is located at the focal point of the planar transflector 14. The infrared source 7 is located at the focal plane of the infrared collimator lens 8. The laser source 11 is located on the focal plane of the laser collimator lens 12. The radio frequency beam emitted by the radio frequency feed source 1 irradiates the plane transparent mirror 14, and the radio frequency beam 2 enters the plane transparent mirror 14 and is converted into plane wave by the radio frequency calculation holographic structure 4 and is turned to an angle theta TR And (5) emergent. The infrared source 7 is collimated into infrared parallel light 9 by the infrared collimating lens 8, and is subjected to specular reflection by an optical film (infrared high reflection/laser and radio frequency high transmission film) on the surface of the plane-transparent reflecting mirror 14, the laser source 11 is collimated into parallel light by the laser collimating lens 12, and the parallel light passes through the radio frequency calculation holographic structure 4, the dielectric substrate 5 and the optical film 6 of the plane-transparent reflecting mirror 14. The infrared parallel light, the laser parallel light and the transmitted radio frequency beam form a composite plane wave.
The plane lens and reflector consists of dielectric substrate, radio frequency calculating holographic structure and optical film. The surface of the medium substrate on which the radiation of the radio frequency feed source is incident is plated with a radio frequency calculation holographic structure, and the other surface, namely the light beam incident surface, is plated with an optical reflection film. The plane transflective mirror is in a flat plate form, has the function of a lens for radio frequency near-field signals, converts incident radio frequency radiation into compact plane waves for emergence, has the function of being approximately equivalent to diffraction gratings relative to far-field incident radio frequency plane beams, and can convert the incident radio frequency plane waves for emergence; its function is planar transmission, mirror for optical signals, reflecting or transmitting incident parallel light at the same angle of incidence.
The radio frequency feed source 1 can be a radio frequency antenna such as a corrugated horn, a pyramid horn, a microstrip antenna and the like, and when the feed source is designed, the emitted radio frequency beam 2 is required to form a cutting field in an effective caliber, so that the edge diffraction effect introduced by the plane transflector 14 can be reduced.
The infrared source 7 can be a blackbody, a xenon lamp, a halogen lamp, an LED, an LD and other light sources, and can also be modulated output light radiation of a liquid crystal modulator, a resistor array, a digital micromirror array and other modulation devices.
The laser source 11 may be a laser source such as a solid-state laser, a semiconductor laser, or a fiber laser.
The infrared collimating lens 8 can be a fixed focus lens or a zoom lens, and is used for collimating the infrared source 7 into infrared parallel light 9.
The laser collimating lens 12 may be a fixed focus lens or a zoom lens, and functions to collimate the laser source 11 into laser parallel light 18.
The dielectric substrate 5 of the planar transflector 14 is made of an inorganic material that can transmit laser light, for example: optical glass, and the like. The material selected is required to be highly transmissive to radio frequency signals. While requiring that the surface of the selected material be polishable and capable of being plated with an optical film 6. While the surface can be coated with a radio frequency computing holographic structure 4.
The radio frequency calculation holographic structure 4 is formed by computer calculation through the electromagnetic field distribution of the radio frequency feed source 1 in the plane transparent and reflecting mirror 14 and plane waves in the required emergent direction through holographic theory, and is realized by plating a metal film structure or other high-conductivity film structures on the non-transmission radio frequency and laser part 19 according to the calculated patterns, and plating radio frequency and laser high-transmission films on the transmission radio frequency and laser part 20. When the distribution of the radio frequency holographic structure is calculated, the cutting of the incident field can be realized by controlling the edge structure, and the edge diffraction effect is reduced.
The optical film 6 is a multilayer dielectric film, is plated by different dielectric materials, can highly reflect the required infrared wave band and highly transmit the laser wave band, and simultaneously highly transmits the radio frequency wave band.
The radio frequency beam 2 emitted by the radio frequency feed source 1 is converted into plane waves through the radio frequency calculation holographic structure 4 and enters the dielectric substrate 5 and the optical film 6, the incident electric axis 3 is perpendicular to the radio frequency calculation holographic structure 4, namely, the plane waves are incident along the normal 17 of the radio frequency calculation holographic structure 4, the included angle between the electric axis of the emergent plane waves, namely, the composite axis 14 and the normal 17 is a second included angle, and the included angle is marked as theta TR . The infrared light wave emitted by the infrared source 7 is collimated into infrared parallel light 9 by the infrared collimating lens 8, and the infrared parallel light propagates along the infrared optical axis 10. The angle between the infrared axis 10 and the normal 17 is a first angle, denoted as θ iO And θ is as follows iO ＝θ TR . The infrared axis 10 is reflected by the optical film 6 in the direction of the compound axis 14. The laser emitted by the laser source 11 is collimated into laser parallel light 18 by the laser collimating lens 12, the laser parallel light 18 propagates along the laser optical axis 13, and propagates along the composite axis together with the infrared and radio frequency beams after being transmitted 14 by the plane-transparent mirror, so as to form a composite plane wave 18.
The invention firstly realizes the common caliber compounding of three electromagnetic wave band beams by utilizing a single plane lens and reflector device, and secondly can realize the generation of radio frequency plane waves (compact range) in a compact space by plating a plane lens with a radio frequency calculation holographic structure and an optical film on the surface. The three-mode common-caliber composite target simulation device has compact overall structure, high integration level and small occupied space.
In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. The radio frequency/infrared/laser three-mode common-caliber composite target simulation device is characterized by comprising a radio frequency feed source, a plane lens, an infrared source, an infrared collimating lens, a laser source and a laser collimating lens, wherein:
the phase center of the radio frequency feed source is positioned on the focal point of the plane lens reflector, the infrared source is positioned on the focal plane of the infrared collimating lens, and the laser source is positioned on the focal plane of the laser collimating lens;
the radio frequency beam emitted by the radio frequency feed source irradiates the plane transparent and reflecting mirror, and after entering the plane transparent and reflecting mirror, the beam is converted into plane wave by the radio frequency calculation holographic structure and is deflected and emitted;
the infrared source is collimated into parallel light by an infrared collimating lens and is reflected by a plane transparent reflecting mirror surface optical film;
the laser source is collimated into parallel light by the laser collimating lens, and the parallel light passes through the calculation holographic structure of the planar lens-reflector, the medium substrate and the optical film;
the infrared parallel light, the laser parallel light and the transmitted radio frequency beam form a composite plane wave.
2. The radio frequency/infrared/laser three-mode common-caliber composite target simulation device according to claim 1, wherein,
the plane transparent and reflecting mirror is in a flat plate shape;
the plane transflective mirror comprises a dielectric substrate, a radio frequency calculation holographic structure and an optical film, wherein:
one surface of the medium substrate is plated with a radio frequency calculation holographic structure, and the other surface is plated with an optical reflection film;
the surface of the medium substrate on which the radiation of the radio frequency feed source is incident is plated with a radio frequency calculation holographic structure, and the other surface, namely the light beam incident surface, is plated with an optical reflection film;
the plane transflector converts incident radio frequency radiation into compact plane waves for emission; the incident radio frequency plane wave is turned and emergent; the incident parallel light is reflected or transmitted at the same incident angle.
3. The radio frequency/infrared/laser three-mode common-caliber composite target simulation device according to claim 1, wherein the radio frequency feed source adopts a corrugated horn, a pyramid horn or a microstrip antenna, and radio frequency beams emitted by the radio frequency feed source form a cutting field in an effective caliber.
4. The rf/ir/laser tri-mode common-caliber composite target simulation device according to claim 1, wherein the ir source adopts a blackbody, xenon lamp, halogen lamp, LED or LD light source, or modulated output optical radiation of a modulating device.
5. The radio frequency/infrared/laser three-mode common-caliber composite target simulation device according to claim 1, wherein the laser source adopts a solid laser, a semiconductor laser or a fiber laser.
6. The radio frequency/infrared/laser three-mode common-caliber composite target simulation device according to claim 1, wherein the infrared collimating lens and the laser collimating lens adopt fixed focus lenses or zoom lenses.
7. The radio frequency/infrared/laser three-mode common-caliber composite target simulation device according to claim 1, wherein the dielectric substrate of the plane trans-reflecting mirror is made of an inorganic material which transmits laser, and the surface of the material can be polished and can be plated with an optical film and a radio frequency calculation holographic structure.
8. The radio frequency/infrared/laser three-mode common-caliber composite target simulation device according to claim 1, wherein the radio frequency calculation holographic structure distribution is generated by computer calculation through a holographic theory by electromagnetic field distribution of a radio frequency feed source in a plane transparent mirror and plane waves in a required emergent direction;
according to the calculated pattern, a metal film structure or other high-conductivity film structure is plated on the non-transmission radio frequency and laser part, and a radio frequency and laser high-permeability film is plated on the transmission radio frequency and laser part.
9. The radio frequency/infrared/laser three-mode common-caliber composite target simulation device according to claim 1, wherein the optical film is a multilayer dielectric film and is formed by plating different dielectric materials.
10. The radio frequency/infrared/laser three-mode common-caliber composite target simulation device according to claim 1, wherein the device is characterized in that:
the radio frequency beam emitted by the radio frequency feed source is converted into plane wave through the radio frequency calculation holographic structure, the plane wave enters the medium substrate and the optical reflection film, the incident electric axis is perpendicular to the radio frequency calculation holographic structure, and the included angle between the electric axis of the emergent plane wave and the normal line is theta TR ；
Infrared light wave emitted by infrared source is collimated into parallel light by infrared collimating lens, the parallel light propagates along infrared axis, and the included angle between infrared axis and normal is theta iO And θ is as follows iO ＝θ TR The infrared light axis is reflected by the optical film to be the direction of the composite axis;
the laser emitted by the laser source is collimated into parallel light by the laser collimating lens, the parallel light propagates along the laser optical axis, and after being transmitted by the plane transparent reflecting mirror, the parallel light propagates along the composite axis together with the infrared and radio frequency beams to form a composite plane wave.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211089795.9A CN116294809A (en) | 2022-09-07 | 2022-09-07 | Radio frequency/infrared/laser three-mode common-caliber composite target simulation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211089795.9A CN116294809A (en) | 2022-09-07 | 2022-09-07 | Radio frequency/infrared/laser three-mode common-caliber composite target simulation device |
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| CN116294809A true CN116294809A (en) | 2023-06-23 |
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| CN202211089795.9A Pending CN116294809A (en) | 2022-09-07 | 2022-09-07 | Radio frequency/infrared/laser three-mode common-caliber composite target simulation device |
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