Air target variable-scale trajectory approximate representation method and device

A technology for air targets and trajectories, which is applied in the directions of instruments, calculations, characters and pattern recognition, etc. It can solve the problems that the approximate scale of the approximate trajectory feature points cannot be adjusted, the effect of three-dimensional trajectory processing is not ideal, and it cannot adapt to the objective needs of variable scales, etc.

Active Publication Date: 2020-10-27
PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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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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  • Air target variable-scale trajectory approximate representation method and device
  • Air target variable-scale trajectory approximate representation method and device
  • Air target variable-scale trajectory approximate representation method and device

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Embodiment Construction

[0036] The present invention will be further explained below in conjunction with accompanying drawing and specific embodiment:

[0037] Such as figure 1 As shown, a variable-scale trajectory approximate representation method for air targets, including:

[0038] Step 1: For trajectory T={p 0 ,p 1 ,...p m ,E}, set the initial value start=0, hop=2, determine the number of sampling points k and the approximate scale threshold ε, add p 0 Enter the segmented trajectory point set P split , get the trajectory T to be processed old ={p start ,p start+1 ,...p start+hop ,E'}; where p i is the trajectory point, 0≤i≤m, E is the set of straight line segments connecting the trajectory points, start is the subscript of the starting trajectory point, hop is the size of the trajectory window to be processed, p start+hop is the candidate segmentation point, E' is T old Corresponding set of straight line segments connecting trajectory points;

[0039] Step 2: Determine whether ε is 0,...

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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...

Claims

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Application Information

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IPC IPC(8): G06K9/62G06K9/46
CPCG06V10/48G06V10/757G06F18/22
Inventor 李珠峰唐慧丰胡瑞娟苏哲群王博曹蓉乔淑敏余文涛席耀一李勇刘剑
Owner PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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