CN105676196A - Wave-absorbing material flat plate positioning device without echo scattering - Google Patents
Wave-absorbing material flat plate positioning device without echo scattering Download PDFInfo
- Publication number
- CN105676196A CN105676196A CN201610146984.3A CN201610146984A CN105676196A CN 105676196 A CN105676196 A CN 105676196A CN 201610146984 A CN201610146984 A CN 201610146984A CN 105676196 A CN105676196 A CN 105676196A
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- metalwork
- scattering
- absorbing material
- echo
- flat part
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention belongs to the technical field of radar stealth material electrical performance tests, and particularly relates to a wave-absorbing material flat plate positioning device without echo scattering. The wave-absorbing material flat plate positioning device is composed of a metal piece (3), a silicone ring (2) and an air extraction valve (4), wherein one surface of the metal piece (3) is a plane (7), and an annular groove (6) is formed in the side surface of the plane (7); the inner side of the silicone ring (2) is embedded in the annular groove (6), and the outer side of the silicone ring (2) inclines toward one side of the plane (7); and a through hole is formed near a planar region centroid position of the metal piece (3), the air extraction valve (4) is installed in the through hole, and the air extraction valve (4) is adhered with the hole wall of the through hole by adopting a sealant. The wave-absorbing material flat plate positioning device without echo scattering can be installed on a low-scattering turntable in an RCS test darkroom, significantly reduces background clutter caused by the existence of a supporting mechanism, is suitable for reflectivity tests and RCS tests of various kinds of wave-absorbing flat plate parts, and significantly increases test reflectivity and RCS test precision without increasing flat plate part manufacturing cost.
Description
Technical field
The invention belongs to Radar Stealth Materials electric performance test technical field, be specifically related to the absorbing material plate locator of a kind of scattering without echo.
Background technology
It is the radar return reducing various aircraft at military spacecraft exterior applications absorbing material, improves the important means of Stealth Fighter. Reflectance index is the key technical indexes describing absorbing material absorbing property.
Giving reflection index of wave suction material method of testing two kinds conventional in GJB2038A, one is segmental support method, and its Main is to lie in a horizontal plane on support by absorbing material, and sending and receiving antenna is separately fixed on segmental support on diverse location. In the method, tested absorbing material distance background is relatively near, and echo and background are overlapped mutually, and test result precision is under some influence, and there are 5 degree of angles between sending and receiving antenna, and therefore, test result and normal incidence test result have certain impact.
The another kind of reflectivity test method provided in GJB2038A is darkroom RCS method, during the method test, it is desirable to absorbing material and flat part are vertically placed. Now, in order to ensure that material plates part position is fixed, it usually needs supporting below and fixing with the adhesive tape of wave transparent, in this mode, test result also will be brought interference by the radar return of supported underneath material. If do not adopted supported underneath mechanism, metal plate part rear adopt metal fastenings, then need every the flat part back side being used for testing is processed into the shape such as groove or screw, it is achieved high cost.
It can be seen that for the reflectance test flat part of regular shape, there is angular error or supporting construction echo interference in existing method of testing all difficulties, makes measuring accuracy be affected to a certain extent.
Summary of the invention
The invention aims to reduce the radar return from background in existing stealth material reflectance test process, and the absorbing material plate locator of a kind of scattering without echo is provided.
The technical scheme is that
The absorbing material plate locator of a kind of scattering without echo, is made up of metalwork, falope ring and extraction valve, and it is plane that metalwork has one side, and has ring-shaped groove in the side of this plane;Embedding in the ring-shaped groove of metalwork inside described falope ring, the lateral plane side of falope ring tilts; Near the plane domain center of area position described in metalwork, have a through hole, described extraction valve is installed in hole, fluid sealant is adopted to bond together between extraction valve and through hole hole wall, realize sealing effectiveness, in the side of metalwork, retention mechanism is installed, it is possible to be fixed together with metal base.
The absorbing material plate locator of aforesaid scattering without echo, is connected to a plastic tube and air pump of bleeding after described extraction valve, when air pump works, can pass through plastic tube and be extracted out by the air of position near the metalwork center of area.
It is connected to a plastic tube and air pump of bleeding after described extraction valve, when air pump works, plastic tube can be passed through the air of metalwork center of area position is extracted out, make to maintain near the center of area negative pressure state.
The absorbing material plate locator of above-mentioned scattering without echo, flat part can be adsorbed in the air by this device as follows:
(1) assemble the metalwork of this device, falope ring, extraction valve together to fix and be arranged on the Test bench of RCS darkroom;
(2) flat part with radar absorbing is close to the plane on metalwork place, it is desirable to flat part can block metalwork and falope ring completely;
(3) plastic tube is connected with extraction valve, air pump of bleeding, booster air pump, makes flat part be attracted to the plan-position place on metalwork, and makes flat part front block metalwork and other mechanisms completely, now, an approximate airtight cavity is formed between flat part and the metalwork center of area. By regulating air pump duty, remotely control the negative pressure in cavity, ensureing that flat part is skid-resistant while, it is to avoid flat part produces excessive deformation.
This device is fixed on the low scattering metal rack turntable in RCS darkroom, and plastic tube used is drawn from low scattering turntable rear, and is blocked by low scattering turntable, to avoid tested radar wave to illuminate. The position that low scattering turntable is arranged in darkroom is positioned at position, dead zone, its top is provided with motor and controls servo control mechanism, when described absorbing material is arranged on turntable without the absorbing material plate locator of echo scattering, it is possible to drive this type device and the flat part that is fixed on device to rotate together according to operational order.
Beneficial effects of the present invention:
The absorbing material plate locator of the scattering without echo of the present invention, may be installed RCS and test on the low scattering turntable in darkroom, significantly reduce the background clutter brought owing to supporting mechanism exists, suitable in reflectance test and the RCS test of all kinds of absorption flat plate parts, under the premise not increasing flat part preparation cost, significantly improve test reflectance and RCS measuring accuracy.
Accompanying drawing explanation
The present invention has 3 width accompanying drawings.
Fig. 1 is the profile of the absorbing material plate locator of a kind of scattering without echo.
Fig. 2 is the rear view of the absorbing material plate locator of a kind of scattering without echo.
Fig. 3 is the structural representation after the absorbing material plate locator of a kind of scattering without echo is fixed on low scattering turntable.
1-flat part, 2-falope ring, 3-metalwork, 4-extraction valve, 5-metalwork center of area position
6-ring-shaped groove, 7-plane, 8-plastic tube, 9-incidence radar wave, the low scattering turntable of 10-.
Detailed description of the invention
Below in conjunction with accompanying drawing and most preferred embodiment, the invention will be further described.
Embodiment 1
As shown in Figure 1-2, the absorbing material plate locator of a kind of scattering without echo, it is made up of metalwork 3, falope ring 2 and extraction valve 4, it is plane 7 that metalwork 3 has one side, and has ring-shaped groove 6 in the side of this plane 7;Embed in the ring-shaped groove 6 of metalwork 3 inside falope ring 2, falope ring 2 lateral plane 7 lopsidedness; Near metalwork 3 plane domain center of area position 5, have a through hole, extraction valve 4 is installed in hole, adopt fluid sealant to bond together between extraction valve 4 and through hole hole wall, in the side of metalwork 3, retention mechanism is installed, is fixed together with metal base. It is connected to plastic tube 8 and an air pump after extraction valve 4, when air pump works, by plastic tube 8, the air near metalwork center of area position 5 is extracted out, make to maintain near the center of area negative pressure state.
Flat part can be adsorbed in the air by this device as follows:
First assembling the metalwork 3 of this device, falope ring 2, extraction valve 4 together to fix is arranged on the Test bench of RCS darkroom;
Secondly the plane 7 that the flat part 1 with radar absorbing is close on metalwork 3 is placed, it is desirable to flat part 1 can block metalwork 3 and falope ring 2 completely;
Then plastic tube 8 is connected with extraction valve 4, air pump of bleeding, booster air pump, flat part 1 is made to be attracted to plane 7 position on metalwork 3, and make flat part 1 front block metalwork 3 and other mechanism completely, now, between flat part 1 and the metalwork center of area 5, form an approximate airtight cavity, by regulating air pump duty, remotely control the negative pressure in cavity, ensureing that flat part 1 is skid-resistant while, it is to avoid flat part 1 produces excessive deformation.
This device is fixed on the low scattering metal rack turntable in RCS darkroom, and plastic tube 8 used is drawn from low scattering turntable 10 rear, and is blocked by low scattering turntable 10, to avoid tested incident radar wave 9 to illuminate. The position that low scattering turntable 10 is arranged in darkroom is positioned at position, dead zone, its top is provided with motor and controls servo control mechanism, when the absorbing material plate locator of scattering without echo is arranged on turntable, this type device and the flat part 1 that is fixed on device is driven to rotate together according to operational order, as shown in Figure 3.
Claims (5)
1. the absorbing material plate locator without echo scattering, it is characterized in that: be made up of metalwork (3), falope ring (2) and extraction valve (4), the upper one side of metalwork (3) is plane (7), and has ring-shaped groove (6) in the side of this plane (7); Falope ring (2) inner side embeds in the ring-shaped groove (6) of metalwork (3), falope ring (2) lateral plane (7) lopsidedness; A through hole is had near metalwork (3) plane domain center of area position (5), extraction valve (4) is installed in hole, fluid sealant is adopted to bond together between extraction valve (4) and through hole hole wall, in the side of metalwork (3), retention mechanism is installed, is fixed together with metal base.
2. the absorbing material plate locator of a scattering without echo as claimed in claim 1, it is characterized in that: after described extraction valve (4), be connected to a plastic tube (8) and air pump, when air pump works, by plastic tube (8), the air near metalwork center of area position (5) is extracted out, make to maintain near the center of area negative pressure state.
3. the absorbing material plate locator of a scattering without echo as claimed in claim 1 or 2, it is characterised in that flat part is adsorbed in the air by this device as follows:
(1) assemble together to fix by the metalwork (3) of this device, falope ring (2), extraction valve (4) and be arranged on the Test bench of RCS darkroom;
(2) flat part (1) with radar absorbing is close to the plane (7) on metalwork (3) place, it is desirable to flat part (1) can block metalwork (3) and falope ring (2) completely;
(3) plastic tube (8) is connected with extraction valve (4), air pump, start air pump, flat part (1) is made to be attracted to plane (7) position on metalwork (3), and make flat part (1) front block metalwork (3) and other mechanism completely, an approximate airtight cavity is formed between flat part (1) and the metalwork center of area (5), by regulating air pump duty, remotely control the negative pressure in cavity, ensureing that flat part (1) is skid-resistant while, it is to avoid flat part (1) produces excessive deformation.
4. the absorbing material of the scattering without echo as described in any one of claims 1 to 3 is without the absorbing material plate locator of echo scattering, it is characterized in that, this device is fixed on the low scattering metal rack turntable in RCS darkroom, plastic tube (8) used is drawn from low scattering turntable (10) rear, and blocked by low scattering turntable (10), to avoid tested incident radar wave (9) to illuminate.
5. the absorbing material of a scattering without echo as claimed in claim 4 is without the absorbing material plate locator of echo scattering, it is characterized in that, the position that low scattering turntable (10) is arranged in darkroom is positioned at position, dead zone, its top is provided with motor and controls servo control mechanism, when the absorbing material plate locator of described scattering without echo is arranged on turntable, this type device and the flat part that is fixed on device is driven to rotate together according to operational order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610146984.3A CN105676196B (en) | 2016-03-15 | 2016-03-15 | A kind of absorbing material plate locator of no echo scattering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610146984.3A CN105676196B (en) | 2016-03-15 | 2016-03-15 | A kind of absorbing material plate locator of no echo scattering |
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| Publication Number | Publication Date |
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| CN105676196A true CN105676196A (en) | 2016-06-15 |
| CN105676196B CN105676196B (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610146984.3A Active CN105676196B (en) | 2016-03-15 | 2016-03-15 | A kind of absorbing material plate locator of no echo scattering |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645794A (en) * | 2018-05-11 | 2018-10-12 | 深圳市华星光电技术有限公司 | A kind of reflectivity detection device and its detection method |
| CN111999713A (en) * | 2020-08-20 | 2020-11-27 | 北京环境特性研究所 | Pit, RCS microwave camera comprising pit and method for replacing support in camera |
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| KR20020091358A (en) * | 2001-05-30 | 2002-12-06 | 엘지이노텍 주식회사 | Apparatus for radar transmission check |
| CN202649260U (en) * | 2012-05-30 | 2013-01-02 | 深圳市栢富电子有限公司 | Wave-absorbing assembly and microwave anechoic chamber |
| CN203825188U (en) * | 2014-04-18 | 2014-09-10 | 北京经纬恒润科技有限公司 | Microwave camera obscura |
| CN105242249A (en) * | 2015-11-25 | 2016-01-13 | 北京机电工程研究所 | Ultralow ambient level microwave unreflected chamber used for RCS testing |
| CN105242250A (en) * | 2015-11-25 | 2016-01-13 | 北京机电工程研究所 | Calibration device capable of facing very low radar cross-section (RCS) targets to measure |
| EP2966466A2 (en) * | 2014-06-16 | 2016-01-13 | Robert Bosch GmbH | Holding device for close range radar sensors |
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2016
- 2016-03-15 CN CN201610146984.3A patent/CN105676196B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020091358A (en) * | 2001-05-30 | 2002-12-06 | 엘지이노텍 주식회사 | Apparatus for radar transmission check |
| CN202649260U (en) * | 2012-05-30 | 2013-01-02 | 深圳市栢富电子有限公司 | Wave-absorbing assembly and microwave anechoic chamber |
| CN203825188U (en) * | 2014-04-18 | 2014-09-10 | 北京经纬恒润科技有限公司 | Microwave camera obscura |
| EP2966466A2 (en) * | 2014-06-16 | 2016-01-13 | Robert Bosch GmbH | Holding device for close range radar sensors |
| CN105242249A (en) * | 2015-11-25 | 2016-01-13 | 北京机电工程研究所 | Ultralow ambient level microwave unreflected chamber used for RCS testing |
| CN105242250A (en) * | 2015-11-25 | 2016-01-13 | 北京机电工程研究所 | Calibration device capable of facing very low radar cross-section (RCS) targets to measure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645794A (en) * | 2018-05-11 | 2018-10-12 | 深圳市华星光电技术有限公司 | A kind of reflectivity detection device and its detection method |
| CN111999713A (en) * | 2020-08-20 | 2020-11-27 | 北京环境特性研究所 | Pit, RCS microwave camera comprising pit and method for replacing support in camera |
| CN111999713B (en) * | 2020-08-20 | 2023-06-09 | 北京环境特性研究所 | Pit, RCS microwave darkroom comprising pit and method for replacing bracket in darkroom |
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| CN105676196B (en) | 2018-04-10 |
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