Method for simulating verisimilar target echo

Abstract

The invention discloses a method for simulating a verisimilar target echo, belonging to the field of electronic simulation. A plane wave database concept is derived from a multi-level subalgorithm of electromagnetic calculation, i.e. a scattered field of a target under incident wave excitation in any direction can be described by k plane waves, wherein k is related to the electrical size of the target. The invention expands the plane wave database concept, indicates K*K plane waves of the target under the excitation of an incident field in k directions according to a reciprocity principle and can accurately describe the scattered field generated by the excitation of the target in any incident direction and form a perfect broadband plane wave database N*K*K by N K*K databases under N different frequencies; and the scattered field of the target in any incident direction and frequency can be directly read by the broadband plane wave database or obtained through interpolation. The invention realizes the real-time simulation of the verisimilar target echo and can serve multiple radar application technologies, such as radar imaging, image features, target property, target identification, figuration design, and the like.

Description

technical field [0001] The invention relates to a realistic target echo simulation method. The invention belongs to the technical field of electronic simulation. Background technique [0002] With the development of radar technology, fuze technology, and electronic countermeasure technology, the development of realistic target echo simulator has become more and more urgent. The demand for it will become wider and wider, and the requirements will be higher and higher. The target echo simulator has become one of the foundations of radar new technology and new system research, one of the keys to research fuze technology, and one of the indispensable tools for electronic countermeasure research. Developed countries strictly control this kind of technology and implement a technology blockade policy against my country. Therefore, it is very necessary and extremely urgent for our country to actively develop efficient and accurate echo simulation technology. [0003] At present, ...

AI Technical Summary

Problems solved by technology

The authenticity of echo simulation depends on the ability of numerical calculation. This method is difficult to carry out in real time. In addition, it needs to be recalculated continuously with the target attitude and trajectory.

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