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A trajectory correction method for flying projectiles based on meteorological grids

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

Active Publication Date: 2021-06-29
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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  • A trajectory correction method for flying projectiles based on meteorological grids
  • A trajectory correction method for flying projectiles based on meteorological grids
  • A trajectory correction method for flying projectiles based on meteorological grids

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with 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, and landform information, combined with the ballistic model to roughly estimate the flight trajectory envelope, and cooperate with the meteorological numerical forecast results to obtain the meteorological grid available for the ballistic model. Grid modeling is to decompose the trajectory space of ballistic flight into a series of grid (grid) units of the same size, each grid is a pixel, and the pixel is the basic unit of the grid environment model. The environment model is evenly divided, and it is necessary to ensure that the bullets can move freely in each grid. Each grid uses a value of 0 or 1 to indicate the existence of the grid. The value of completely feasible grid is 0, and the value of completely infeasibl...

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Abstract

The invention discloses a trajectory correction method for a flight projectile based on a meteorological grid. The steps are as follows: (1) Roughly estimating the envelope of the flight trajectory based on environmental information and a trajectory model, and constructing a meteorological grid available for the trajectory model; ( 2) Carry out grid processing of meteorological parameters on the ballistic model to form a trajectory calculation model coupled with meteorological grids; (3) Scale transform the meteorological grids according to the step size of the ballistic integration, further subdivide the grids, and Form a new calculation node; (4) integrate the meteorological parameters of each meteorological grid with the meteorological parameters of adjacent meteorological grids, and establish an analytical grid function of meteorological parameters by using the interpolation method; (5) use the meteorological The parametric grid function is used to perform ballistic integration, and the ballistic correction result compensated by meteorological grid is obtained. The invention establishes a meteorological parameter grid function based on environmental information, and provides a trajectory correction method for flying bullets and arrows.

Description

technical field [0001] The invention relates to a trajectory correction method for flying missiles, in particular to a trajectory correction method for flying missiles based on weather grids. Background technique [0002] The movement laws of various types of missiles flying in the atmosphere are affected by the state of the atmosphere, and meteorological conditions mainly affect the flight characteristics of missiles through aerodynamic forces. Changes in air temperature, air pressure and longitudinal wind mainly affect the stroke of the projectile, while crosswind will cause sideways. If the meteorological condition data is inaccurate, the ballistic correction will be inaccurate, and the performance index requirements of the system will not be met. [0003] From the perspective of civilian application, the accuracy of ballistic correction can use the precise guidance of bullets and arrows to more efficiently carry out artificial rainfall and other work. In the prior art,...

Claims

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Application Information

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Patent Type & Authority Patents(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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