CN109061343A - A kind of radiosensitivity test method - Google Patents
A kind of radiosensitivity test method Download PDFInfo
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- CN109061343A CN109061343A CN201810768741.2A CN201810768741A CN109061343A CN 109061343 A CN109061343 A CN 109061343A CN 201810768741 A CN201810768741 A CN 201810768741A CN 109061343 A CN109061343 A CN 109061343A
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- 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
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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Abstract
The invention discloses a kind of radiosensitivity test methods comprising following steps: S1, obtaining the three-dimensional simulation model data of measurand and the near-field thermal radiation field strength distribution data of radiating antenna；S2, different frequency electromagnetic wave incident field strength distribution data of the measurand on different measuring distances, different location are obtained according to the three-dimensional simulation model data of measurand and the near-field thermal radiation field strength distribution data of radiating antenna；S3, according to electromagnetic wave incident field strength distribution data acquisition radiating antenna 3dB covering range of field intensity data, field strength uniformity data, and carry out abundant coverage test and obtain test position data, complete the test of radiation-sensitive degree.The present invention can provide the intensity distribution of different shape subject surface incident field intensity to different measuring distances, different frequency, can assess test radiation areas field strength uniformity, measurand electromagnetic protection is instructed to research and develop.
Description
Technical field
The present invention relates to field of radiation test, and in particular to a kind of radiosensitivity test method.
Background technique
Enhancing is increasing from naval vessel, ground or airborne radar, communication, radio and television constant power radiation, it is right
Change system electronic electric equipment, system cause to seriously threaten.The high high radiation field of external radio frequency environment is complex electromagnetic environment
Important component, the high high radiation field under complex electromagnetic environment must be taken into consideration in the development of modern comfort.Under forceful electric power magnetic environment,
If not taking counter-measure, it will lead to device systems and perceive vast and hazy, command and coordination disorder, reduced with frequency equipment Efficacy.In order to
It protects the critical system of system-level equipment from the adverse effect of high high radiation field, high intense radiation must be carried out to such target
Field or external radio frequency environmental sensitivity verification test.For civil aircraft, DO-160 seaworthiness testing standard is promulgated in Europe；To army
With equipment, China promulgates the standards such as GJB1389A and GJB151.
Existing high high radiation field or the test of external radio frequency environmental sensitivity use the shape of High-power amplifier and high-gain aerial
Formula carries out susceptibility radiation test, then carries out field strength monitoring and calibration with field intensity probe, due to the three-dimensional table of measurand complexity
Face (such as aircraft, surface car), causes measuring distance to change, and the uniformity of tested equipment irradiation zone field strength is difficult to assess；Quilt
Survey that equipment lacks Field strength coverage in three-dimensional structure and field strength distribution is shown, testing crew caused to be difficult to operate, test it is consistent
Property is less reproducible, so that test effect is poor.
Summary of the invention
For above-mentioned deficiency in the prior art, a kind of radiosensitivity test method provided by the invention solves existing
The problem of sensitivity tests effect difference.
In order to achieve the above object of the invention, the technical solution adopted by the present invention are as follows:
There is provided a kind of radiosensitivity test method comprising following steps:
The near-field thermal radiation field strength distribution data of S1, the three-dimensional simulation model data for obtaining measurand and radiating antenna；
S2, it is obtained according to the three-dimensional simulation model data of measurand and the near-field thermal radiation field strength distribution data of radiating antenna
Different frequency electromagnetic wave incident field strength distribution data of the measurand on different measuring distances, different location；
It is S3, uniform according to electromagnetic wave incident field strength distribution data acquisition radiating antenna 3dB covering range of field intensity data, field strength
Property data, and carry out abundant coverage test and obtain test position data, complete the test of radiation-sensitive degree.
Further, the three-dimensional simulation model data of measurand are obtained in step S1 method particularly includes:
The three-dimensional parameter that measurand is obtained by camera-shooting scanning mode or laser scanning methods, obtains according to the three-dimensional parameter
To three-dimensional simulation model data.
Further, the specific method that the near-field thermal radiation field strength distribution data of radiating antenna are obtained in step S1 includes such as
Under:
Radiating antenna threedimensional model is established by 3 D electromagnetic simulation software, and radiating antenna is obtained by simulation software
Near-field thermal radiation field strength data at 1m-3m, and then obtain the near-field thermal radiation field strength distribution data of radiating antenna；
Or by the near-field field strength distributed data near field probes measuring distance radiating antenna 1m-3m, and then obtain spoke
Penetrate the near-field thermal radiation field strength distribution data of antenna.
Further, abundant coverage test is carried out according to electromagnetic wave incident field strength distribution data in step S3 and tested
Position data method particularly includes:
The projected area S for obtaining measurand position to be tested, using the rectangle in electromagnetic wave incident field strength shape as having
Effect covering shape, i.e., effective overlay area obtains its area of effective coverage B (L, f)；Wherein L is detected part and radiating antenna
Distance；F is the frequency of electromagnetic wave；
Effective overlay area is gradually moved from left to right, from top to bottom, according to formula
N (L, f)=S/B (L, f)
Detected part required testing time N (L, f) under conditions of distance is L, frequency is f is obtained, and is recorded in three-dimensional
The position O tested every time in coordinate systemN(x, y, z) to get arrive test position data.
Further, according to electromagnetic wave incident field strength distribution data acquisition radiating antenna 3dB Field strength coverage model in step S3
Enclose the specific method of data the following steps are included:
Field strength at S3-1, pre-determined distance radiating antenna geometric center L is with reference to field strength, and position is O (0,0, L)；
S3-2, it tests to obtain field strength to be with reference to field strength half in other radiation positions by the method for emulation or near-field test
Position, as the borderline point in 3dB Field strength coverage region；
S3-3, obtain the nearest point of range points O (0,0, L) and point O (0,0, L) on the boundary of 3dB Field strength coverage region away from
From r, will be the center of circle with point O (0,0, L), r be radius formed circle as radiating antenna 3dB covering range of field intensity.
Further, according to the specific side of electromagnetic wave incident field strength distribution data acquisition field strength uniformity data in step S3
Method are as follows:
Under conditions of measuring distance is L, if
E0/E1≤2
Then illustrate that the field strength uniformity of the secondary testing radiation overlay area meets 3dB uniformity requirement；Otherwise the secondary test
The field strength uniformity of radiation overlay area is unsatisfactory for 3dB uniformity requirement；
Wherein E0To need field strength to be tested；E1The minimum field strength intensity of overlay area is radiated for measurand.
The invention has the benefit that
1. the present invention can obtain the test of radiating antenna by field strength distribution data and measurand 3 d scan data
Position, and 3dB field strength is carried out to measurand and is covered all around；For different measuring distances, different frequency, difference can be provided
The intensity distribution of shape objects surface incident field intensity can assess test radiation areas field strength uniformity, and tested pair of guidance
As electromagnetic protection is researched and developed.
It, can be with 2. the present invention can show the field strength distribution data of the three-dimensional structure of measurand and radiating antenna
Tester is intuitively instructed to carry out strong electromagnetic environmental testing.
Detailed description of the invention
Fig. 1 is flow diagram of the invention；
Fig. 2 is the near-field thermal radiation field strength distribution schematic diagram of radiating antenna；
Fig. 3 is the three-dimensional simulation model schematic diagram of aircraft；
Fig. 4 be by the near-field thermal radiation field strength distribution data of the three-dimensional simulation model data of measurand and radiating antenna and
The simulation test result schematic diagram that measuring distance is combined.
Specific embodiment
A specific embodiment of the invention is described below, in order to facilitate understanding by those skilled in the art this hair
It is bright, it should be apparent that the present invention is not limited to the ranges of specific embodiment, for those skilled in the art,
As long as various change is in the spirit and scope of the present invention that the attached claims limit and determine, these variations are aobvious and easy
See, all are using the innovation and creation of present inventive concept in the column of protection.
As shown in Figure 1, the radiosensitivity test method the following steps are included:
The near-field thermal radiation field strength distribution data of S1, the three-dimensional simulation model data for obtaining measurand and radiating antenna；
S2, it is obtained according to the three-dimensional simulation model data of measurand and the near-field thermal radiation field strength distribution data of radiating antenna
Different frequency electromagnetic wave incident field strength distribution data of the measurand on different measuring distances, different location；
It is S3, uniform according to electromagnetic wave incident field strength distribution data acquisition radiating antenna 3dB covering range of field intensity data, field strength
Property data, and carry out abundant coverage test and obtain test position data, complete the test of radiation-sensitive degree.
The three-dimensional simulation model data of measurand are obtained in step S1 method particularly includes:
The three-dimensional parameter that measurand is obtained by camera-shooting scanning mode or laser scanning methods, obtains according to the three-dimensional parameter
Three-dimensional simulation model data into three-dimensional space, and determine the coordinate origin in three-dimensional space, obtained three-dimensional artificial mould
Type data are as shown in Figure 3.
The specific method of the near-field thermal radiation field strength distribution data of acquisition radiating antenna includes the following: in step S1
Radiating antenna threedimensional model is established by 3 D electromagnetic simulation software, and radiating antenna is obtained by simulation software
Near-field thermal radiation field strength data at 1m-3m, and then obtain the near-field thermal radiation field strength distribution data of radiating antenna；
Or by the near-field field strength distributed data near field probes measuring distance radiating antenna 1m-3m, and then obtain spoke
Penetrate the near-field thermal radiation field strength distribution data of antenna.
Abundant coverage test is carried out according to electromagnetic wave incident field strength distribution data in step S3 and obtains test position data
Method particularly includes:
The projected area S for obtaining measurand position to be tested, using the rectangle in electromagnetic wave incident field strength shape as having
Effect covering shape, i.e., effective overlay area obtains its area of effective coverage B (L, f)；Wherein L is detected part and radiating antenna
Distance；F is the frequency of electromagnetic wave；
Effective overlay area is gradually moved from left to right, from top to bottom, according to formula
N (L, f)=S/B (L, f)
Detected part required testing time N (L, f) under conditions of distance is L, frequency is f is obtained, and is recorded in three-dimensional
The position O tested every time in coordinate systemN(x, y, z) to get arrive test position data.Certain primary test position data such as Fig. 4
It is shown.
According to the tool of electromagnetic wave incident field strength distribution data acquisition radiating antenna 3dB covering range of field intensity data in step S3
Body method the following steps are included:
Field strength at S3-1, pre-determined distance radiating antenna geometric center L is with reference to field strength, and position is O (0,0, L)；
S3-2, it tests to obtain field strength to be with reference to field strength half in other radiation positions by the method for emulation or near-field test
Position, as the borderline point in 3dB Field strength coverage region；
S3-3, obtain the nearest point of range points O (0,0, L) and point O (0,0, L) on the boundary of 3dB Field strength coverage region away from
From r, will be the center of circle with point O (0,0, L), r be radius formed circle as radiating antenna 3dB covering range of field intensity.
According to electromagnetic wave incident field strength distribution data acquisition field strength uniformity data in step S3 method particularly includes:
Under conditions of measuring distance is L, if
E0/E1≤2
Then illustrate that the field strength uniformity of the secondary testing radiation overlay area meets 3dB uniformity requirement；Otherwise the secondary test
The field strength uniformity of radiation overlay area is unsatisfactory for 3dB uniformity requirement；
Wherein E0To need field strength to be tested；E1The minimum field strength intensity of overlay area is radiated for measurand.
In the specific implementation process, it if the field strength uniformity of radiation overlay area is unsatisfactory for 3dB uniformity requirement, moves
The position of radiating antenna, the radiation for carrying out multiple different location to the region is tested, until meeting 3dB uniformity requirement.For
Unacceptable measuring distance L and frequency f need to only repeat the above steps, corresponding change measuring distance value and frequency values.
The present invention can be by obtained test position data, radiating antenna 3dB covering range of field intensity data, field strength uniformity
The three-dimensional simulation model data of data and measurand are exported, and by showing that equipment is shown, are convenient for testing crew
With reference to.
In conclusion the present invention can obtain radiating antenna by field strength distribution data and measurand 3 d scan data
Test position, and to measurand carry out 3dB field strength cover all around；For different measuring distances, different frequency, can give
The intensity distribution of different shape subject surface incident field intensity out can assess test radiation areas field strength uniformity, instruct
The research and development of measurand electromagnetic protection.The present invention can by the three-dimensional structure of measurand and the field strength distribution data of radiating antenna into
Row display, can intuitively instruct tester to carry out strong electromagnetic environmental testing.
Claims (6)
1. a kind of radiosensitivity test method, it is characterised in that: the following steps are included:
The near-field thermal radiation field strength distribution data of S1, the three-dimensional simulation model data for obtaining measurand and radiating antenna；
S2, it is tested according to the three-dimensional simulation model data of measurand and the near-field thermal radiation field strength distribution data of radiating antenna
Different frequency electromagnetic wave incident field strength distribution data of the object on different measuring distances, different location；
S3, according to electromagnetic wave incident field strength distribution data acquisition radiating antenna 3dB covering range of field intensity data, field strength uniformity number
According to, and carry out abundant coverage test and obtain test position data, complete the test of radiation-sensitive degree.
2. radiosensitivity test method according to claim 1, it is characterised in that: obtain tested pair in the step S1
The three-dimensional simulation model data of elephant method particularly includes:
The three-dimensional parameter that measurand is obtained by camera-shooting scanning mode or laser scanning methods, obtains three according to the three-dimensional parameter
Tie up simulation model data.
3. radiosensitivity test method according to claim 1, it is characterised in that: obtain radiation day in the step S1
The specific method of the near-field thermal radiation field strength distribution data of line includes the following:
Radiating antenna threedimensional model is established by 3 D electromagnetic simulation software, and radiating antenna 1m-3m is obtained by simulation software
The near-field thermal radiation field strength data at place, and then obtain the near-field thermal radiation field strength distribution data of radiating antenna；
Or by the near-field field strength distributed data near field probes measuring distance radiating antenna 1m-3m, and then obtain radiation day
The near-field thermal radiation field strength distribution data of line.
4. radiosensitivity test method according to claim 1, it is characterised in that: according to electromagnetic wave in the step S3
Incident field intensity distributed data carries out abundant coverage test and obtains test position data method particularly includes:
The projected area S for obtaining measurand position to be tested, using the rectangle in electromagnetic wave incident field strength shape as effectively covering
Lid shape, i.e., effective overlay area obtain its area of effective coverage B (L, f)；Wherein L be detected part and radiating antenna away from
From；F is the frequency of electromagnetic wave；
Effective overlay area is gradually moved from left to right, from top to bottom, according to formula
N (L, f)=S/B (L, f)
Detected part required testing time N (L, f) under conditions of distance is L, frequency is f is obtained, and is recorded in three-dimensional coordinate
The position O tested every time in systemN(x, y, z) to get arrive test position data.
5. radiosensitivity test method according to claim 1, it is characterised in that: according to electromagnetic wave in the step S3
Incident field intensity distributed data obtain radiating antenna 3dB covering range of field intensity data specific method the following steps are included:
Field strength at S3-1, pre-determined distance radiating antenna geometric center L is with reference to field strength, and position is O (0,0, L)；
S3-2, it tests to obtain field strength to be the position with reference to field strength half in other radiation positions by the method for emulation or near-field test
It sets, as the borderline point in 3dB Field strength coverage region；
S3-3, the distance r for obtaining range points O (0,0, L) is nearest on the boundary of 3dB Field strength coverage region point and point O (0,0, L),
To be the center of circle with point O (0,0, L), r be radius formed circle as radiating antenna 3dB covering range of field intensity.
6. radiosensitivity test method according to claim 5, it is characterised in that: according to electromagnetic wave in the step S3
Incident field intensity distributed data obtains field strength uniformity data method particularly includes:
Under conditions of measuring distance is L, if
E0/E1≤2
Then illustrate that the field strength uniformity of the secondary testing radiation overlay area meets 3dB uniformity requirement；Otherwise the secondary testing radiation
The field strength uniformity of overlay area is unsatisfactory for 3dB uniformity requirement；
Wherein E0To need field strength to be tested；E1The minimum field strength intensity of overlay area is radiated for measurand.
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| CN110542814A (en) * | 2019-09-05 | 2019-12-06 | 中国科学院长春光学精密机械与物理研究所 | system, method and device for testing electromagnetic sensitivity of imaging equipment |
| CN111683388A (en) * | 2020-08-13 | 2020-09-18 | 中国人民解放军国防科技大学 | Near-field radiation attenuation test method and three-dimensional display system |
| CN112149271A (en) * | 2019-06-28 | 2020-12-29 | Aptiv技术有限公司 | Method for simulating antenna |
| CN113567471A (en) * | 2021-09-27 | 2021-10-29 | 宜宾盛纬伦科技有限公司 | Device and method for testing high-frequency wave-absorbing performance of wave-absorbing material |
| CN114880834A (en) * | 2022-03-10 | 2022-08-09 | 西北核技术研究所 | Method for estimating radiation field uniformity region of biconical-planar wire grating horizontal polarization antenna |
| CN115542065A (en) * | 2022-12-02 | 2022-12-30 | 成都四威功率电子科技有限公司 | External field mobile multi-antenna multi-degree-of-freedom radiation sensitivity testing method and system |
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| CN113567471A (en) * | 2021-09-27 | 2021-10-29 | 宜宾盛纬伦科技有限公司 | Device and method for testing high-frequency wave-absorbing performance of wave-absorbing material |
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| CN115542065A (en) * | 2022-12-02 | 2022-12-30 | 成都四威功率电子科技有限公司 | External field mobile multi-antenna multi-degree-of-freedom radiation sensitivity testing method and system |
| CN115542065B (en) * | 2022-12-02 | 2023-03-17 | 成都四威功率电子科技有限公司 | External field mobile multi-antenna multi-degree-of-freedom radiation sensitivity testing method and system |
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