High-precision track point display and control method in space coordinate system

Abstract

The invention discloses a high-precision track point display and control method in a space coordinate system, comprising the following steps: (1) inputting track points successively and optimizing the track points according to time, positions and attitudes; (2) computing basic coordinates in the space coordinate system; (3) traversing a preferred track point list, performing coordinate offset on the track point, and successively acquiring the local coordinates of track points with the exception of an initial point; (4) drawing a track point graph by a underlying rendering platform. The high-precision track point display and control method realizes display control of high-precision track points in the world coordinate system effectively, and avoids a high-precision graphic drawing joggle problem.

Description

technical field [0001] The invention relates to high-precision graphics display processing under a computer space coordinate system, in particular to a high-precision track point display and control method under a space coordinate system. Background technique [0002] In various situation simulation and real-time track processing information systems, through position detection and data processing of various electromagnetic means such as radar, satellite, electronic reconnaissance, and sensor networks, aircrafts flying in the air, ships navigating on the sea, land Vehicles in motion, satellites on space orbit and other moving targets are displayed in the 3D scene. In the process, the position of the target is far away from the center of the earth. For the traditional calculation of world coordinates based on the center of the earth, the accuracy often increases. The loss of the image will cause problems such as image jitter and display position deviation. Therefore, it is on...

AI Technical Summary

Problems solved by technology

However, in the actual application process of this method, there are inevitable problems such as position offset and graphic jitter. In the three-dimensional perspective projection mode, when the distance between the observer and the observation target changes, the target trajectory display is not smooth. , the main performance is that the position of the track point is not stable, and it is easy to cause jitter problems. The position and attitude will overlap and distort when the scene changes, especially when the point density in the target trajectory is high and the attitude movement changes sharply. Can produce an unusual dithering effect

[0004] In order to solve this problem, in practical engineering applications, the accuracy of data processing is often improved, such as upgrading single-precision floating-point operations to double-precision floating-point operations. These methods will reduce the loss of precision, but cannot completely avoid precision. loss problem, and this method has low computational efficiency and high system overhead

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