Method of converting near field scattering function to missile target encounter echoes based on local scattering source inversion

A technology of scattering function and scattering source, which is applied in the field of near-field electromagnetic scattering characteristic data conversion to generate projectile-object intersection echo, and near-field scattering function conversion projectile-object intersection echo field, which can solve the problem of uninvolved and uninvolved microwave radar target echo Wave and other problems, to achieve the effect of improving the application rate, improving the simulation calculation speed, and fast calculation

Active Publication Date: 2018-05-22
SHANGHAI RADIO EQUIP RES INST
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However, this method does not involve the calculation of radar target echoes in the microwave range...

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  • Method of converting near field scattering function to missile target encounter echoes based on local scattering source inversion
  • Method of converting near field scattering function to missile target encounter echoes based on local scattering source inversion
  • Method of converting near field scattering function to missile target encounter echoes based on local scattering source inversion

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[0042] The following combination Figure 1 to Figure 6 , the technical content, structural features, achieved goals and effects of the present invention will be described in detail through preferred embodiments.

[0043] Such as figure 1 As shown, the method for converting the near-field scattering function inverted by the local scattering source provided by the present invention to the missile-eye intersection echo method generates the target dynamic echo illuminated by the detection antenna for a target with a known geometric shape, which specifically includes the following step:

[0044] S1. Construct an elliptical cylindrical enclosing surface according to the length direction of the target, completely enclosing the target;

[0045] S2. Obtain the distribution data of the near-field scattering function on the surrounding surface based on the orthogonal dipoles;

[0046] S3. During the projectile-target rendezvous process, the weighted calculation of the detection antenn...

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Abstract

The invention relates to a method of converting a near field scattering function to missile target encounter echoes based on local scattering source inversion. For a target with a known geometric shape, target dynamic echoes under irradiation of a detection antenna are generated. The method comprises steps: S1, an enveloping surface in an elliptical cylindrical shape is built according to the length direction of the target, and the target is totally enveloped inside; S2, based on a cross dipole, distribution data of the near field scattering function on the enveloping surface are acquired; S3,during a missile target encounter process, weighted calculation of a detection antenna pattern is carried out on the near field scattering function; S4, based on the weighted near field scattering function, a local scattering source of the target surface is calculated by inversion; and S5, based on the inverted local scattering source, the dynamic echoes of the target are generated. Fast calculation on the missile target encounter echoes under different observation antennas can be realized, the target near-field scattering function and the observation antenna are subjected to decorrelation, and the application rate of characteristic data is improved.

Description

technical field [0001] The invention relates to a method for converting near-field scattering function to missile-eye intersection echo, in particular to a method for converting near-field electromagnetic scattering characteristic data based on local scattering source inversion to generate missile-eye intersection echo, which belongs to radar target electromagnetic The technical field of scattering properties processing. Background technique [0002] The commonly used radar echo simulation methods are mainly based on the target discrete network model and based on target scattering points. Both of them need to be calculated directly in combination with the observation antenna pattern. The obtained electromagnetic scattering calculation data is closely related to the observation antenna, and it is difficult to share the scattering data of different observation antennas. At the same time, the method based on the target discrete grid model generally involves a large amount of c...

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Application Information

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IPC IPC(8): G01S7/41
CPCG01S7/418
Inventor 梁子长高伟
Owner SHANGHAI RADIO EQUIP RES INST
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