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A method for obtaining chaff cloud rcs

An acquisition method and chaff cloud technology, which is applied in the field of chaff cloud RCS acquisition based on the tanh-sinh integral method, can solve the problems such as the inability of the calculation amount to meet the actual demand and the low calculation efficiency, so as to reduce the calculation time and realize the fast calculation. Effect

Active Publication Date: 2021-07-20
ZHEJIANG JINMA AUTOMATION TECH CO LTD
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Problems solved by technology

So far, the traditional algorithm is to use the Monte Carlo method for calculation. The advantage of this method is high calculation accuracy, but the disadvantage is low calculation efficiency. When calculating large-scale chaff clouds, the calculation amount will not meet the actual needs.

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  • A method for obtaining chaff cloud rcs
  • A method for obtaining chaff cloud rcs
  • A method for obtaining chaff cloud rcs

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with accompanying drawing.

[0045] A chaff cloud RCS acquisition method based on the tanh-sinh integral method. The specific steps are as follows:

[0046] Step 1, such as figure 1 and 2As shown, the radar detects the chaff cloud, obtains the number x of chaff in the chaff cloud, and randomly selects a piece of chaff in the chaff cloud as the characteristic chaff; and obtains the length L of the characteristic chaff, the vertical polarized part horizontally polarized part The vertically polarized part of the reflected electric field horizontally polarized part

[0047] The global coordinate system and the local coordinate system of the bistatic scattering of the characteristic chaff are established. The coordinate origin of the global coordinate system is point T; point T is any point that is not on the feature chaff. The coordinate origin of the local coordinate system is the geometric ce...

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Abstract

The invention discloses a chaff cloud RCS acquisition method based on a tanh-sinh integral method. The calculation efficiency of traditional chaff cloud RCS algorithm is low. When calculating large-scale chaff cloud, its calculation amount will not meet the actual demand. The present invention is as follows: 1. Obtain the information of chaff cloud and characteristic chaff, and establish a global coordinate system and a local coordinate system. 2. Obtain the bistatic scattering coefficient of the characteristic chaff. 3. Calculate the integrand σ ⊥to⊥ , σ ⊥to / / , σ / / to / / singular point. Fourth, split σ ⊥to⊥ , σ ⊥to / / , σ / / to / / area to be integrated. 5. Integrate the radar cross section of each small area separately. 6. Calculate the radar cross-sectional area of ​​the characteristic chaff by superposition. 7. Calculate the radar cross section of the chaff cloud by multiplying by the number of chaff. The invention greatly enhances the calculation efficiency while the calculation precision is close to that of the Monte Carlo method.

Description

technical field [0001] The invention belongs to the technical field of computer-aided analysis and design and software design, and in particular relates to a chaff cloud RCS acquisition method based on a tanh-sinh integral method. Background technique [0002] Chaff clouds are usually composed of several thin metal wires. When the target perceives danger, it will eject several thin metal wires to form a cloud-like structure. A typical form of chaff is a dipole. Its working principle is that a certain length of dipole can resonate at the radar carrier frequency, thereby hiding the target to be struck and effectively protecting the real target. Therefore, the calculation of chaff and chaff cloud radar cross section (RCS) has always been a hot issue in the scientific community. So far, the traditional algorithm is to use the Monte Carlo method for calculation. The advantage of this method is high calculation accuracy, but the disadvantage is low calculation efficiency. When ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/62G06F17/16
CPCG06F17/16G06T2207/10044G06T7/62
Inventor 尹川耿友林潘玉剑金华燕张忠海
Owner ZHEJIANG JINMA AUTOMATION TECH CO LTD