Method and device for calculating electromagnetic property of group target
A technology of electromagnetic characteristics and group targets, applied in the electromagnetic field, can solve problems such as long time, complex coupling, and large amount of calculation, and achieve the effect of high real-time performance, small amount of calculation, and fast calculation
Pending Publication Date: 2022-07-12
BEIJING INSTITUTE OF TECHNOLOGYGY
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[0013] In view of this, the present invention provides a method and device for calculating the electromagnetic characteristics of group targets, which can solve the technical problems of huge amount of calculation, long time and complex coupling in the calculation process of electromagnetic characteristics of group targets
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[0056] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
[0057] like Figure 1-2 As shown, the present invention provides a method for calculating the electromagnetic characteristics of a group target, including the following steps:
[0058] Step S1: Obtain the location information of the group target and the grid information of a target individual in the group target, and the target individual is recorded as the origin target individual; obtaining grid information of other target individuals in the group target;
[0059] Step S2: acquiring the omnidirectional surface current wrapped by the spherical surface of the origin target individual when the plane wave excites the origin target individual; a surface current library is formed by the omnidirectional surface current of the origin target individual;
[0060] Step S3: Mark the origin target individual as the first target individual, and determine the init...
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The invention discloses a method and device for calculating group target electromagnetic characteristics, and the method comprises the steps: marking a target individual in an incident direction as a first target individual, and determining a surface current initial value of the first target individual; assigning values to surface current initial values of other target individuals except the first target individual in the group target; determining a scattered field value in the direction of a connection line between every two target individuals; determining a coupling effect between the target individuals, determining an induced current value generated by the coupling effect, and further determining an induced current value generated by the coupling effect of each target individual; determining a scattered field of the group target in the radar sight line direction based on the induced current value generated due to the coupling effect; and determining a current value of the group target in an iteration mode, and determining electromagnetic scattering data of the group target in all directions.
Description
technical field [0001] The invention relates to the field of electromagnetic technology, in particular to a method and a device for calculating the electromagnetic characteristics of a group target. Background technique [0002] In a modern environment, whether it is a marine fleet, a fleet of aircraft, or a swarm of unmanned aerial vehicles, the targets they target often appear in the form of swarms, which are groups of multiple targets located within the beam width of the radar antenna, and With the continuous development of control technology, group targets have fast moving speed, small size, and short distances. When interacting with group targets, it is necessary to quickly calculate the scattering characteristics of the group targets. [0003] The existing electromagnetic calculation methods for a single target are relatively mature. For example, when the high-frequency approximation method is used to calculate the scattering characteristics of the target, the amount o...
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IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 郭琨毅孙景月吴比翼吴瑞盛新庆
Owner BEIJING INSTITUTE OF TECHNOLOGYGY