Air target variable-scale trajectory approximate representation method and device

Abstract

The invention discloses an air target variable-scale trajectory approximate representation method and device. The method comprises the steps: setting start = 0, hop = 2 and a threshold value epsilon for a trajectory T = {p0, p1,... Pm, E}, and adding p0 into a segmentation trajectory point set Psplit; if epsilon is not equal to 0, judging whether start + hot is less than or equal to m, and if so,connecting head and tail track points of a to-be-processed trajectory Told in a straight line to form an approximate trajectory Tnew; otherwise, returning to the Psplit; selecting k sampling points onthe Told, and calculating the Tnew distance; calculating an approximation degree quantized value error according to the distance; and if error is less than epsilon, determijing hop + +, otherwise, adding the previous trajectory point of the candidate segmentation point into Psplit, enabling start to be equal to start + hop-1 and hop to be equal to 2, and performing recycling. According to the method, different scale features of the original trajectory are reserved by adopting a variable-scale track approximate representation method, so that the trajectoris clearer.

Description

technical field [0001] The invention belongs to the technical field of air target trajectory processing, and in particular relates to an approximate representation method and device for variable-scale trajectory of an air target. Background technique [0002] With the continuous development of modern aircraft technology, the types of spacecraft performing various combat missions are increasing. In modern warfare, timely and accurate identification of high-value air targets on the battlefield can ensure full control of the battlefield situation, and is conducive to real-time analysis and judgment of the battlefield situation, so as to make timely responses. judgment. [0003] The maneuvering behavior of an aircraft is highly correlated with its type, weapon configuration, and mission intent. Maneuvering features are often the most powerful source of forensic data when conducting detection. The trajectory data of the aircraft is a multi-dimensional data sequence with spatio...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the unsatisfactory processing effect of the existing complex trajectory with data quality problems formed by high-speed and high-maneuvering aerial targets. At present, most of the trajectory similarity comparison algorithms calculate the plane projection trajectory, and the processing of the three-dimensional trajectory The effect is not ideal, the selection of approximate trajectory feature points cannot adjust the approximate scale, and it does not meet the objective needs of variable-scale target maneuver behavior analysis. A method and device for approximate representation of variable-scale trajectory of air targets is proposed

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