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A Curvature Adaptive Orbit Drawing Method

An adaptive and orbital technology, applied in 2D image generation, image data processing, instruments, etc., can solve the problems of complex implementation, insufficient performance, high real-time performance, etc., and achieve the effect of saving storage

Active Publication Date: 2017-11-28
BEIJING AEROSPACE CONTROL CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of computer graphics methods to draw orbital curves requires high real-time performance. Among them, the commonly used method is to fix the coordinates of the coordinate axes and increase the sampling, which is faster, but the performance of shape preservation is insufficient in the position where the curve changes drastically.
Another method is fixed-angle sampling points, which is complicated to implement and poor in real-time performance

Method used

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  • A Curvature Adaptive Orbit Drawing Method
  • A Curvature Adaptive Orbit Drawing Method
  • A Curvature Adaptive Orbit Drawing Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A curvature-adaptive orbit drawing method such as figure 1 As shown, after the steps of data conversion point calculation, step sampling, data flip copying, and orbit drawing, the details are as follows:

[0016] (1) Calculate the points where the slope of the curve is 1 and -1

[0017]

[0018] The point where the slope of the curve is 1 but

[0019]

[0020] The slope of the curve is -1 but

[0021] (2) Calculate the split point D 1 ,D 2 ,D 3 ,D 4 .

[0022] if:

[0023] but

[0024] otherwise

[0025] Then D 1 ,D 2 ,D 3 ,D 4 The points are:

[0026] (3) Set the sampling step size Δd, at point o~D 1 Between, sampled in y-coordinate steps, at point D 1 ~D 2 The x coordinates are sampled step by step, the step size is 0.7Δd, point D 2 ~D 3 The samples are sampled step by step with the x coordinate, the step size is Δd, and the point D 3 ~D 4 The x coordinates are sampled step by step, with a step size of 0.7Δd, at point D ...

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Abstract

The invention provides a curvature self-adaption orbit drawing method, and belongs to the technical field of aerospace and computer graphics. According to the method, through steps of data conversion point calculation, stepping sampling, a data overturning copying and orbit drawing, the sampling direction and resolution ratio are controlled, so that calculation of points to which an orbit line belongs can be quickly generated in the mode that a shape is maintained, and an information guarantee is provided for spaceflight test control. By means of the method, a quick shape-maintenance curve sample collecting method is achieved, the drawing method is used for drawing the computer orbit line, and real-time performance and accuracy of orbit drawing are guaranteed.

Description

technical field [0001] The invention belongs to the technical fields of aerospace and computer graphics, and in particular relates to a curvature-adaptive trajectory drawing method. Background technique [0002] In spacecraft flight trajectory design, flight simulation, and operation measurement and control tasks, the use of computer drawing methods to draw spacecraft flight trajectory lines is one of the key contents of aerospace parameter monitoring. The data basis of the drawing method The sampling point data acquisition of the orbit curve, the real-time performance, sampling accuracy, and data volume of different methods vary greatly. The use of computer graphics to draw track curves requires high real-time performance. Among them, the commonly used method is fixed axis coordinate incremental sampling, which is faster but has insufficient shape-preserving performance at positions where the curve changes drastically. Another method is fixed-angle sampling point, which is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T11/00
Inventor 李立春张伟孙军周建亮许颖慧陈骁孟彦鹏苗毅尚德生范文山
Owner BEIJING AEROSPACE CONTROL CENT
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