Electromagnetic environment test method based on simulated data

A technology for simulating data and testing methods, applied in the direction of electromagnetic field characteristics, etc., can solve problems such as insufficient accuracy of electric field strength and cannot be used to replace test results, etc., to improve test efficiency, promote promotion and application, and reduce workload.

Active Publication Date: 2009-01-21
CHINA SHIP DEV & DESIGN CENT
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Problems solved by technology

However, the inferred electric field strength cannot be used to replace the test results due to insu...

Method used

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  • Electromagnetic environment test method based on simulated data
  • Electromagnetic environment test method based on simulated data
  • Electromagnetic environment test method based on simulated data

Examples

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Embodiment Construction

[0025] Further illustrate the present invention below in conjunction with accompanying drawing.

[0026] There is a relatively open area on a platform with a complex structure that needs to be tested for electromagnetic field strength. The radiating antenna is located at Figure 4 At S, that is, the edge of the open area, the measured point is set at A (1.5m from the platform ground, 6m from the antenna horizontal distance), and it is necessary to infer the electric field strength of points B and C. B and AS are on a straight line, but C and AS are not.

[0027] Use FEKO software to conduct a complete electromagnetic modeling of the complex structure, and predict the electric field distribution in the horizontal plane at 1.5m from the platform ground in this area under the antenna 7MHz, 1000W emission state.

[0028] First estimate the electric field intensity at point B according to the method proposed by the present invention.

[0029] (1) Extract the simulation data on the...

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Abstract

The invention relates to an electromagnetic condition test method based on simulation data, which builds an electromagnetic simulation numerical model according to a tested object and adopts a prior electromagnetic simulation software to calculate the electromagnetic field distribution at the surface of the object; finds an actual measurement point O and finds the actual electric field intensity E at the point and extracts the predicated data from the simulation data; processes power fitting to attain a fitting equation as E=aR<-b> to describe the change of the field intensity along with distance; adopts the b as the b of a derivation equation as E=aR<-b>, and induces the electric field intensity E of the actual measurement point and the distance between the O point and the V point into the equation to obtain a; induces the distance of the derived point into the equation as E=aR<-b>; and obtain the approximate value of the electric field intensity at the T point. The invention can obtain a predicted value nearly same as the actual test data in the open area of a complex structure, satisfy the test on the electromagnetic condition in actual engineering. The invention can improve test efficiency, protect testers and realize high test accuracy.

Description

technical field [0001] The invention belongs to the field of electromagnetic environment testing, and in particular relates to a method for deducing electromagnetic field strengths at other test points based on electromagnetic field simulation data and test data at one test point in an actual electromagnetic environment. It can be used to predict the intensity of radiated electromagnetic field on the deck surface of water surface ships and other open and flat areas. Background technique [0002] In order to ensure the normal operation of communication equipment and electromagnetic sensitive equipment on ships and other weapon platforms, and to ensure the safety of personnel, weapons and fuel on large weapon platforms, it is necessary to test and measure the electromagnetic environment in these areas in order to take measures to ensure that the electromagnetic field The strength does not exceed the specified limit value. At present, the main method adopted by the shipbuildin...

Claims

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Application Information

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IPC IPC(8): G01R29/08
Inventor 喻菁温定娥吴楠张崎方重华谢大刚侯冬云
Owner CHINA SHIP DEV & DESIGN CENT
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