Lightning detection network layout method suitable for real terrain
A layout method and detection network technology, applied in the fields of genetic law, design optimization/simulation, special data processing applications, etc., can solve the deviation of inversion results, measurement time and signal "should arrive time error, unreasonable station layout, etc. problems, to achieve the effect of improving rationality, high precision and improving efficiency
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Embodiment 1
[0034] A kind of lightning detection network layout method applicable to the real terrain of the present embodiment, the method adopts the FDTD algorithm to correct the time difference of each station receiving the pulse signal after introducing the terrain factor; Then, the least squares method and the Levenberg-Marquardt iterative method are used to solve the overdetermined equations describing the lightning location data; further combined with the genetic algorithm, the optimal three-dimensional lightning detection network distribution under the ideal number of stations is obtained, as shown in figure 1 As shown, it specifically includes the following steps:
[0035] 1) Obtain the terrain data of the target area, establish a three-dimensional gridded space model of the target area, and select an alternative site based on the surface grid points in the three-dimensional gridded space model; Site construction needs of the site.
[0036] 2) Use the site combination under the ...
Embodiment 2
[0049] The lightning detection network layout method applicable to real terrain of the present invention is developed based on genetic algorithm and FDTD method. Genetic algorithm is a method of simulating the natural evolution process to search for the optimal solution, transforming the solution process into the process of chromosome exchange and mutation in nature. When solving complex optimization problems, the genetic algorithm fully considers the diffusion of the optimization problem solution, and can obtain better optimization results relatively quickly, which can be better applied to this algorithm. The FDTD algorithm can simulate the propagation process of lightning electromagnetic waves on the real surface, so it can be used to obtain the accuracy of the inversion results. The specific implementation method is as follows, see the flow chart figure 1 .
[0050] Step 1: Obtain terrain data of the target area, establish a 3D gridded space model of the target area, and ...
Embodiment 3
[0061] The further optional design of the present embodiment is: in the foregoing embodiment, the relative simulation accuracy (fitness) is obtained based on the FDTD algorithm, and the FDTD algorithm is a numerical simulation algorithm based on the Maxwell equations, and the differential form of the Maxwell equations is as follows :
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[0066] in, is the electric field strength (V / m), is the electric displacement (C / m 2 ), Indicates the magnetic field strength (A / m), Indicates the magnetic field flux density (Wb / m 2 ), J represents the current density (A / m 2 ), Indicates the magnetic current density (V / m 2 ), the current density is the conductor current density J c and applied current density J i sum, that is, J=J c +J i ; The magnetic current density is similar to that of ρ e Indicates the charge density (C / m 3 ), ρ m Indicates the magnetic charge density (Wb / m 3 ). The electromagnetic field quantity satisf...
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