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Real-time air target motion pattern recognition and parameter estimation method

A motion pattern and air target technology, applied in the field of real-time air target motion pattern recognition and parameter estimation, can solve the problems of high-frequency noise, interference, and doping of wrong data, achieve data loss and noise interference, simple structure, easy-to-achieve effects

Active Publication Date: 2018-09-11
SOUTHEAST UNIV
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Problems solved by technology

[0005] Purpose of the invention: In view of the problem that the initial position data received in the prior art is doped with wrong data and a large amount of high-frequency noise interference, provide a method with simple structure, easy to implement, and can achieve good pattern recognition and parameter Real-time Air Target Motion Pattern Recognition and Parameter Estimation Method for Estimated Effect

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[0055] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. The embodiments described in the present invention are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by persons of ordinary skill in the art without making creative efforts all fall within the protection scope of the present invention.

[0056] A kind of real-time air target motion pattern recognition and parameter estimation method of the present invention, comprises the following steps:

[0057] 1) Interpolation processing is performed between adjacent position points with large time intervals. The interpolation process adopts the cubic spline interpolation method, and the generated interpolated position point sequence is updated and cached in real time for further processing.

[0058] 2) Carry out zero-phase-shift Butterworth low-pass filte...

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Abstract

The invention discloses a real-time air target motion pattern recognition and parameter estimation method. A smooth motion track is obtained by conducting interpolation and filtering smoothing processing on a reported position point sequence of an air target, and course angle information obtained through calculation and height information are utilized to judge a motion pattern of the air target inspace. Speed data obtained through calculation is utilized to judge a variation pattern of speed through filtering and smoothing. The least square fitting method is adopted to obtain parameter estimation values such as angular speed and acceleration of motion of the air target through fitting. Moreover, in an arc motion mode, fitting is conducted on a plane equation and a spherical equation on the basis of track points within a specified period of time, and then a circular center coordinates and an arc radius of arc motion can be calculated. The real-time air target motion pattern recognitionand parameter estimation method can well solve the problem of data loss and noise disturbance in original position data.

Description

technical field [0001] The invention belongs to the field of air target motion pattern recognition, in particular to a real-time air target motion pattern recognition and parameter estimation method. Background technique [0002] With the rapid development of the domestic air transport industry, there are higher requirements for the safety of air transport, so the research on the motion pattern recognition and parameter estimation of air targets has become very important. With the help of ADS-B technology, the monitoring system can automatically obtain information such as the position, altitude, speed, heading, and identification number of the target from the relevant airborne equipment. By studying the trajectory and parameters of the air target, the staff can establish a complete set of The flight data management platform can realize the comprehensive management functions of data collection, data analysis, data storage, data application and data query, and greatly improve ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 李新德王凯于越
Owner SOUTHEAST UNIV
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