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Flight missile and rocket trajectory correction method based on meteorological grids

A grid and meteorological technology, applied in special data processing applications, geometric CAD, design optimization/simulation, etc., can solve the problems of low accuracy of meteorological parameters, small range, and affecting the accuracy of trajectory correction of flying missiles

Active Publication Date: 2021-04-27
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

In the prior art, the meteorological parameters used for ballistic correction have the problems of low accuracy, small range, and slow data refresh, which seriously affect the ballistic correction accuracy of flying missiles

Method used

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  • Flight missile and rocket trajectory correction method based on meteorological grids
  • Flight missile and rocket trajectory correction method based on meteorological grids
  • Flight missile and rocket trajectory correction method based on meteorological grids

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Embodiment Construction

[0025]The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026]The detailed steps are as follows:

[0027]Step 1, first, based on the target position, flight mode, terrain, landform information, combined with the ballistic model to coarsely estimate, with meteorological numerical prediction results, to obtain a meteorological grid available to the ballistic model. The grid mode is to decompose the trajectory space of the ballistic flight into a series of sizes (grid) units, each grid as a pixel, the element of the rasterized environment model, using the grid The environment model is uniform, and it is guaranteed that the arrow can be freely active in each grid. Each grid uses a value of 0 or 1 to represent the presence of the grid. The full-feasible grid is 0, and the completely non-feasible grid is 1. Because the population is subject to the target position, its own position, flight mode, terrain, landfo...

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Abstract

The invention discloses a flight projectile trajectory correction method based on meteorological grids. The method comprises the following steps: (1) carrying out the rough estimation of a flight projectile trajectory envelope line based on environment information and a trajectory model, and constructing the meteorological grids available for the trajectory model; (2) performing rasterization processing of meteorological parameters on the ballistic model to form a ballistic calculation model coupled with meteorological grids; (3) performing scale transformation on the meteorological grids according to the step length of the trajectory integration, further subdividing the grids, and forming new calculation nodes on the trajectory; (4) performing data fusion on the meteorological parameters of each meteorological grid and the meteorological parameters of the adjacent meteorological grid, and establishing a meteorological parameter grid function in an analysis form by adopting an interpolation mode; and (5) performing ballistic integration by using the meteorological parameter grid function to obtain a ballistic correction result compensated by the meteorological grid. The invention establishes a meteorological parameter grid function based on environmental information, and provides a flight missile and rocket trajectory correction method.

Description

Technical field[0001]The present invention relates to a flight-ramping ballistic correction method, and more particularly to a method of flying arrowing ballistic correction based on meteorological grid.Background technique[0002]The might of motion in the atmosphere is affected by the atmospheric state, and the weather conditions are mainly influenced by air power. Temperature, air pressure, and vertical winds mainly affect the stroke of the cartridge, while the wind will cause a side. If the meteorological condition is not allowed, the ballistic correction is not allowed, and it will not meet the performance indicators required by the system.[0003]The accuracy of the ballistic correction can be used to use the precise guidance of the population from the application of civilian perspectives. In the prior art, the weather parameters used for ballistic correction have a low precision, small range, and slow data refresh, which seriously affects the ballistic correction accuracy of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06F30/20
CPCG06F30/15G06F30/20
Inventor 秦华旺戴跃伟
Owner NANJING UNIV OF INFORMATION SCI & TECH
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