CN110907733B - Method for testing energy leakage of quasi-optical feed network system - Google Patents
Method for testing energy leakage of quasi-optical feed network system Download PDFInfo
- Publication number
- CN110907733B CN110907733B CN201911226767.5A CN201911226767A CN110907733B CN 110907733 B CN110907733 B CN 110907733B CN 201911226767 A CN201911226767 A CN 201911226767A CN 110907733 B CN110907733 B CN 110907733B
- Authority
- CN
- China
- Prior art keywords
- quasi
- optical
- receiver
- cold source
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
The invention discloses a method for testing energy leakage of a quasi-optical feed network system, which is used for actually measuring whether the quasi-optical feed network has the energy leakage problem or not from the aspect of engineering application through a system loss test, a system external energy leakage test and a system internal multipath transmission test, so that the position precision of an alignment optical component can be accurately adjusted, and the system satellite-borne test precision is improved.
Description
Technical Field
The invention belongs to the field of design of detection reliability of satellite-borne passive microwave remote sensing loads, and particularly relates to a method for testing energy leakage of a quasi-optical feed network system.
Background
The satellite-borne passive microwave remote sensing load can realize the detection of various elements such as atmospheric temperature, humidity, rainfall, atmospheric trace gas and the like, and different detection elements correspond to different detection frequency bands of the load, so that multi-band composite detection is required to meet the multifunctional integrated detection requirement of the load.
The quasi-optical feed network system can realize multi-band composite detection and can separate multi-frequency and multi-polarization signals. Compared with the traditional feed source horn direct feed mode, the quasi-optical feed network system has the advantages of high transmission efficiency, small insertion loss and the like. The quasi-optical feed network system is formed by the layout combination of quasi-optical components such as a reflector, a polarization grid, a frequency selection surface, a plane turning mirror and the like, wherein the reflector is mainly used for changing the propagation direction of wave beams, and the polarization grid realizes the function of separating vertical polarization signals and horizontal polarization signals according to polarization. The frequency selective surface realizes the function of separating electromagnetic radiation signals of different frequency bands according to frequency. In a satellite-borne working environment, if a quasi-optical feed network component generates a radiation leakage phenomenon, energy cannot be transmitted completely, or energy outside the system enters the system through edge radiation leakage, so that a load receiving energy signal is unstable, and the detection precision and the calibration precision of the load are influenced.
Generally, in the stage of designing a quasi-optical feed network system, the energy transmission efficiency of a quasi-optical feed network component meets the index requirement through design simulation, and in the stage of product development and integration, the energy leakage of the actual quasi-optical feed network system needs to be obtained through actual testing due to the influence of various factors such as component surface machining errors and assembly errors.
Disclosure of Invention
The invention aims to provide a method for testing energy leakage of a quasi-optical feed network system, which can accurately judge whether the quasi-optical feed network system has energy leakage, thereby improving the quasi-optical feed network system to enable the energy transmission efficiency to meet index requirements.
In order to solve the problems, the technical scheme of the invention is as follows:
a method for testing energy leakage of a quasi-optical feed network system comprises the following steps:
connecting the quasi-optical feed network system with a receiver through a feed source loudspeaker;
and (3) testing system loss: placing the cold source on the horn mouth surface of the feed source horn, and recording the output voltage V1 of the receiver;
placing a heat source on a horn mouth surface of a feed source horn, and recording the output voltage V2 of a receiver;
placing the cold source on a quasi-optical port surface of the system, and recording the output voltage V3 of the receiver;
according to the formula:
calculating the system loss;
and (3) testing the energy leakage outside the system: the wave absorbing piece is sequentially arranged among all quasi-optical components of the system, and the output voltage of the receiver is recorded;
comparing the output voltage of the receiver with the V3 when the wave absorbing piece is arranged between different quasi-optical components, and if the output voltage is equal to the V3, no external energy is leaked; if not, external energy leakage exists;
and (3) testing system internal multipath transmission: arranging a cold source on a quasi-optical surface of the system, and recording output voltage of a receiver when wave absorbing pieces are sequentially arranged on each reflecting mirror surface of a system propagation path;
comparing the output voltages of the receiver when the wave absorbing pieces are arranged at different reflecting mirror surfaces, and if the output voltages are equal, no multipath transmission exists; if not, then there is multipath transmission;
wherein, the system loss refers to the insertion loss of each channel of the system; the quasi-optical aperture surface refers to the beam waist of a Gaussian beam input by the system; the system propagation path refers to a reflection path which is formed by sequentially propagating and passing after the light path of each channel of the system is incident at the quasi-optical interface; the space between the quasi-optical components is the space between the frames of the quasi-optical components.
According to one embodiment of the invention, the heat source arranged on the bell-mouth surface in the system loss test is a box-shaped heat source, the box-shaped heat source is a box-shaped container capable of shielding a reflector on the largest mouth surface in the system, and the box-shaped container is filled with a radiation material;
the cold source arranged on the horn mouth surface is a box-shaped cold source, the box-shaped cold source is a box-shaped container capable of shielding a largest mouth surface reflector in the system, and liquid nitrogen is filled in the box-shaped container;
the cold source arranged on the quasi-optical aperture surface of the system is a standard aperture cold source, the size of the standard aperture cold source is larger than that of the quasi-optical aperture surface, liquid nitrogen is arranged in the standard aperture cold source and can be connected with an external power supply to maintain stable temperature.
According to one embodiment of the invention, the wave absorbing member is made of wave absorbing material, and the wave absorbing material is wedge-shaped material made of materials such as ferrite.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
according to the method for testing the energy leakage of the quasi-optical feed network system in the embodiment of the invention, whether the quasi-optical feed network has the energy leakage problem is actually measured from the aspect of engineering application through the system loss test, the system external energy leakage test and the system internal multipath transmission test, so that the position precision of an alignment optical component can be accurately adjusted, and the system satellite-borne test precision is improved.
Drawings
Fig. 1 is a schematic diagram of a method for testing energy leakage of a quasi-optical feed network system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a system loss testing method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a test connection for energy leakage of a quasi-optical feed network system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a test connection for energy leakage of a quasi-optical feed network system according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a system external energy leakage test method according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a system internal multipath transmission testing method according to an embodiment of the present invention.
Description of reference numerals:
1: a quasi-optical feed network system; 2: a feed source horn; 3: a receiver; 4: a cold source.
Detailed Description
The method for testing energy leakage of a quasi-optical feed network system according to the present invention is further described in detail with reference to the accompanying drawings and the specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims.
As shown in fig. 1, the method for testing energy leakage of the quasi-optical feed network system provided by the present invention includes a system loss test, a system internal multipath transmission test, and a system external energy leakage test.
Specifically, before testing, a feed horn 2 in a quasi-optical feed network system 1 (hereinafter referred to as a system) is connected to a receiver 3. Wherein, the receiver 3 receives the electromagnetic wave sent from the feed horn 2 and converts the power of the electromagnetic wave into voltage for output.
As shown in fig. 2, during a system loss test, the cold source 4 is placed on the horn mouth surface of the feed horn 2, and as shown in fig. 3, the output voltage V1 of the receiver 3 is recorded;
placing a heat source on the horn mouth surface of the feed source horn 2, and recording the output voltage V2 of the receiver 3;
as shown in fig. 4, the cold source 4 is placed on the quasi-optical port surface of the system, and the output voltage V3 of the receiver 3 is recorded;
according to the formula:
and calculating the system loss.
The heat source arranged on the bell-mouth surface is a box-shaped heat source, the box-shaped heat source is a box-shaped container capable of shielding a reflector on the largest mouth surface in the system, and the box-shaped container is filled with materials with stable radiation performance.
The cold source 4 arranged on the horn mouth surface is a box-shaped cold source, the box-shaped cold source is a box-shaped container capable of shielding a maximum mouth surface reflector in the system, and liquid nitrogen is filled in the box-shaped container.
The cold source 4 arranged on the quasi-optical aperture surface of the system is a cold source with a standard aperture, the size of the cold source with the standard aperture is larger than that of the quasi-optical aperture surface, and liquid nitrogen is arranged in the cold source with the standard aperture. In addition, the cold source with the standard caliber is connected with an external power supply to maintain stable temperature.
The system loss specifically refers to the insertion loss of each channel of the system; and the quasi-optical aperture refers to the beam waist of the gaussian beam input by the system.
As shown in fig. 5, when the external energy leakage of the system is tested, the cold source 4 is placed on the quasi-optical port surface of the system, and the output voltage V3 of the receiver 3 is recorded;
then, the wave absorbing piece is sequentially arranged between all quasi-optical components of the system, and the output voltage of the receiver 3 is recorded;
comparing the output voltage of the receiver 3 with the V3 when the wave absorbing piece is arranged between different quasi-optical components, and if the output voltage is equal to the V3, no external energy is leaked; if the external energy is not equal, external energy leakage exists, which indicates that external energy enters the system through the position, and is transmitted to the feed source loudspeaker 2 to be received by the receiver 3.
The wave-absorbing piece is made of wave-absorbing materials, and the wave-absorbing materials are wedge-shaped materials made of materials such as ferrite. Between the collimating optical components is the space between the collimating optical component frames.
As shown in fig. 6, in the internal multipath transmission test of the system, the cold source 4 is placed on the quasi-optical port surface of the system, and the output voltage V3 of the receiver 3 is recorded;
then, the wave absorbing pieces are sequentially arranged at the positions of all the reflection mirror surfaces of the system propagation path, and the output voltage of the receiver 3 when the wave absorbing pieces are arranged at different mirror surfaces is recorded;
comparing the output voltages of the receiver 3 when the wave absorbing pieces are arranged at different reflecting mirror surfaces, and if the output voltages are equal, no multipath transmission exists; if the two signals are not equal, the cold source signal is transmitted to the feed source loudspeaker 2 through other internal paths and is received by the receiver 3, namely multipath transmission.
The system propagation path refers to a reflection path which is formed by sequentially propagating and passing after the optical path of each channel of the system is incident at the quasi-optical interface.
And after the system loss test, the system internal multipath transmission test and the system external energy leakage test are all finished, judging whether the index requirements are met according to the test results. When each test result meets the index requirement, namely the system loss test value is smaller than the index requirement of the system, no multipath transmission effect exists in the system, no external energy leaks into the system, and the quasi-optical feed network system is reliable.
In summary, the method for testing energy leakage of the quasi-optical feed network system provided by the invention actually measures whether the quasi-optical feed network has the energy leakage problem from the aspect of engineering application through the system loss test, the system external energy leakage test and the system internal multipath transmission test, so that the position precision of the quasi-optical component can be accurately adjusted, and the system satellite-borne test precision is improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (3)
1. A method for testing energy leakage of a quasi-optical feed network system is characterized by comprising the following steps:
connecting the quasi-optical feed network system with a receiver through a feed source loudspeaker;
and (3) testing system loss: placing the cold source on the horn mouth surface of the feed source horn, and recording the output voltage V1 of the receiver;
placing a heat source on a horn mouth surface of a feed source horn, and recording the output voltage V2 of a receiver;
placing the cold source on a quasi-optical port surface of the system, and recording the output voltage V3 of the receiver;
according to the formula:
calculating the system loss;
and (3) testing the energy leakage outside the system: the wave absorbing piece is sequentially arranged among all quasi-optical components of the system, and the output voltage of the receiver is recorded;
comparing the output voltage of the receiver with the V3 when the wave absorbing piece is arranged between different quasi-optical components, and if the output voltage is equal to the V3, no external energy is leaked; if not, external energy leakage exists;
and (3) testing system internal multipath transmission: arranging a cold source on a quasi-optical surface of the system, and recording output voltage of a receiver when wave absorbing pieces are sequentially arranged on each mirror surface of a system propagation path;
comparing the output voltages of the receiver when the wave absorbing pieces are arranged at different mirror surfaces, and if the output voltages are equal, no multipath transmission exists; if not, then there is multipath transmission;
wherein, the system loss refers to the insertion loss of each channel of the system; the quasi-optical aperture surface refers to the beam waist of a Gaussian beam input by the system; the system propagation path refers to a reflection path which is formed by sequentially propagating and passing after the light path of each channel of the system is incident at the quasi-optical interface; the space between the quasi-optical components is the space between the frames of the quasi-optical components.
2. The method for testing energy leakage of a quasi-optical feed network system as claimed in claim 1, wherein the heat source disposed on the bell-mouth surface in the system loss test is a box-shaped heat source, the box-shaped heat source is a box-shaped container capable of shielding a mirror on the largest mouth surface in the system, and the box-shaped container is filled with a radiation material;
the cold source arranged on the horn mouth surface is a box-shaped cold source, the box-shaped cold source is a box-shaped container capable of shielding a largest mouth surface reflector in the system, and liquid nitrogen is filled in the box-shaped container;
the cold source arranged on the quasi-optical aperture surface of the system is a standard aperture cold source, the size of the standard aperture cold source is larger than that of the quasi-optical aperture surface, liquid nitrogen is arranged in the standard aperture cold source and can be connected with an external power supply to maintain stable temperature.
3. The method for testing energy leakage of the quasi-optical feed network system of claim 1, wherein the wave-absorbing member is made of a wave-absorbing material, and the wave-absorbing material is a wedge-shaped material made of ferrite or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911226767.5A CN110907733B (en) | 2019-12-04 | 2019-12-04 | Method for testing energy leakage of quasi-optical feed network system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911226767.5A CN110907733B (en) | 2019-12-04 | 2019-12-04 | Method for testing energy leakage of quasi-optical feed network system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110907733A CN110907733A (en) | 2020-03-24 |
| CN110907733B true CN110907733B (en) | 2021-08-10 |
Family
ID=69822097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911226767.5A Active CN110907733B (en) | 2019-12-04 | 2019-12-04 | Method for testing energy leakage of quasi-optical feed network system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110907733B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0272785A1 (en) * | 1986-11-06 | 1988-06-29 | Senstar Corporation | Intrusion detection system |
| JPH05206709A (en) * | 1992-01-24 | 1993-08-13 | Fujitsu General Ltd | Feed horn for switching horizontally and vertically polarized wave |
| JPH05235603A (en) * | 1992-02-24 | 1993-09-10 | Fujitsu General Ltd | Horizontally and vertically polarized wave changeover feed horn |
| CN102255678A (en) * | 2011-04-11 | 2011-11-23 | 中国电子科技集团公司第五十四研究所 | Method for measuring insertion loss of feed network |
| US8982333B2 (en) * | 2008-09-19 | 2015-03-17 | Shilat Optronics Ltd. | Aerial observation system |
| CN204439679U (en) * | 2015-02-12 | 2015-07-01 | 中国电子科技集团公司第十六研究所 | A kind of broadband feed integrally cooling low-temperature receiver test panel shielding apparatus |
| CN104994460A (en) * | 2015-07-08 | 2015-10-21 | 中国电子科技集团公司第五十四研究所 | Method for measuring transmission loss of sealing film of feed source horn mouth |
| CN105116261A (en) * | 2015-09-08 | 2015-12-02 | 中国电子科技集团公司第五十四研究所 | Method for measuring corrugated horn loss |
| CN108760770A (en) * | 2018-05-24 | 2018-11-06 | 上海航天测控通信研究所 | A kind of thermal control coating loss test device and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10550028B2 (en) * | 2016-02-15 | 2020-02-04 | FOMS Inc. | Fiber optic manufacturing in space |
| CN110488389A (en) * | 2019-08-27 | 2019-11-22 | 上海航天测控通信研究所 | Satellite-borne microwave Hygrothermograph integrative detection instrument |
-
2019
- 2019-12-04 CN CN201911226767.5A patent/CN110907733B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0272785A1 (en) * | 1986-11-06 | 1988-06-29 | Senstar Corporation | Intrusion detection system |
| JPH05206709A (en) * | 1992-01-24 | 1993-08-13 | Fujitsu General Ltd | Feed horn for switching horizontally and vertically polarized wave |
| JPH05235603A (en) * | 1992-02-24 | 1993-09-10 | Fujitsu General Ltd | Horizontally and vertically polarized wave changeover feed horn |
| US8982333B2 (en) * | 2008-09-19 | 2015-03-17 | Shilat Optronics Ltd. | Aerial observation system |
| CN102255678A (en) * | 2011-04-11 | 2011-11-23 | 中国电子科技集团公司第五十四研究所 | Method for measuring insertion loss of feed network |
| CN204439679U (en) * | 2015-02-12 | 2015-07-01 | 中国电子科技集团公司第十六研究所 | A kind of broadband feed integrally cooling low-temperature receiver test panel shielding apparatus |
| CN104994460A (en) * | 2015-07-08 | 2015-10-21 | 中国电子科技集团公司第五十四研究所 | Method for measuring transmission loss of sealing film of feed source horn mouth |
| CN105116261A (en) * | 2015-09-08 | 2015-12-02 | 中国电子科技集团公司第五十四研究所 | Method for measuring corrugated horn loss |
| CN108760770A (en) * | 2018-05-24 | 2018-11-06 | 上海航天测控通信研究所 | A kind of thermal control coating loss test device and method |
Non-Patent Citations (3)
| Title |
|---|
| 《Accelerated microwave curing of concrete: A design and performancerelated experiments》;Natt Makul等;《Cement and Concrete Composites》;20170816;全文 * |
| 《天线馈源网络插入损耗测量新方法》;秦顺友，等;《测试技术学报》;20160430;全文 * |
| 《高频馈源喇叭密封罩工艺性能研究》;韦生文，等;《电子工艺技术》;20100731;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110907733A (en) | 2020-03-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103344841A (en) | Free space terminal short-circuit system for temperature changing measurement of dielectric property of dielectric material | |
| CN103134997B (en) | A kind of lightening detection device based on optical principle | |
| CN107421967B (en) | Glass detection device and detection method | |
| KR100971766B1 (en) | Variable altitude simulation apparatus and electromagnetic wave delaying method | |
| CN112558001B (en) | Pulse high-power field calibration device and method | |
| CN109613343B (en) | Quasi-optical measurement system and method for normal emissivity of terahertz radiator | |
| CN104515907A (en) | Scattering parameter testing system and implementation method thereof | |
| CN106992798B (en) | Passive intermodulation test method based on slot waveguide near-field coupling | |
| TW201618379A (en) | A far-field calibration system of an antenna arrary system | |
| CN105203562A (en) | Testing system for insertion phase delay of frequency selection material and testing method thereof | |
| CN110907733B (en) | Method for testing energy leakage of quasi-optical feed network system | |
| TW201619619A (en) | Microwave dark room with absorbing body changing reflection path | |
| CN108414839B (en) | FSS-based complex dielectric constant measurement system by resonance method | |
| CN108199790B (en) | Waveguide test system and test method for passive intermodulation performance of metal mesh | |
| CN103605033A (en) | Cross-frequency-band electromagnetic property measuring device and method of X band antennas | |
| CN101526569A (en) | Method for measuring substance dielectric constant by using monopole antenna | |
| CN102226821A (en) | Transmission type detector used for waveguide signal power detection | |
| Glimm et al. | A single-antenna method for traceable antenna gain measurement | |
| Schulz et al. | Investigation of a circular TE11-TE01-mode converter in stepped waveguide technique | |
| CN107202929B (en) | A method of measurement rectangular waveguide component loss | |
| CN115390022A (en) | High-precision real-time dynamic test method for calibration network in radar antenna | |
| CN201293685Y (en) | Third-order correlator with double delay light paths | |
| CN109580661B (en) | Method for testing complex reflection coefficient of free space material | |
| CN102540155A (en) | Radar integrated radiation power detection method | |
| CN112147423B (en) | Method for testing polarization isolation of metal wire grid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |