Target motion trajectory smoothness evaluation method

A technology of motion trajectory and smoothness, which is applied in the field of evaluation of target motion trajectory smoothness, can solve problems such as the effective evaluation of difficult target motion trajectory smoothness, and achieve the effect of perfect evaluation indicators and good guidance

Active Publication Date: 2019-04-19
10TH RES INST OF CETC
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Problems solved by technology

At present, the evaluation of the smoothness of the target trajectory has not yet formed a relatively complete evaluation

Method used

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  • Target motion trajectory smoothness evaluation method
  • Target motion trajectory smoothness evaluation method
  • Target motion trajectory smoothness evaluation method

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Embodiment Construction

[0017] Refer to figure 1 . According to the present invention, starting from two aspects of the target motion position fluctuation degree and the target motion direction change, the target motion trajectory smoothness evaluation index is established to realize the estimation of the target motion trajectory smoothness: firstly, the target motion trajectory information is used to calculate and estimate the An index that reflects the degree of fluctuation of the target motion position; then calculate and estimate the index that can reflect the change of the target motion direction; finally, by multiplying the two index values, the final target motion trajectory smoothness index is obtained. Among them, the target motion position fluctuation degree index calculation and estimation steps are as follows: First, use the SG (Savitzky-Golay) smoothing filter to perform polynomial fitting on the longitude, latitude and elevation information in the target motion trajectory to obtain the fi...

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Abstract

The invention discloses a target motion trajectory smoothness evaluation method and aims to achieve the excellent guiding effect. The method is characterized in that from two aspects of the fluctuation degree of the target motion position and the change of the target motion direction, a target motion trajectory smoothness evaluation index is established, the time, longitude, latitude and elevationinformation of target motion trajectory data is extracted, the target motion trajectory information is utilized to calculate and estimate an index capable of reflecting the fluctuation degree of thetarget motion position and an index capable of reflecting the change of the target motion direction, the above two index values reflecting the fluctuation degree of the target motion position and thechange of the target motion direction are multiplied to obtain the final target motion trajectory smoothness index; an evaluation value of the target trajectory smoothness index is obtained.

Description

Technical field [0001] The invention relates to the quality evaluation technology of target motion trajectory data in the field of information quality evaluation, in particular to a method for evaluating the smoothness of the target motion trajectory. Background technique [0002] The target motion trajectory is the motion route reflecting the target within a period of time, and its accurate extraction can realize the measurement and analysis of the target's motion parameters, motion behavior evaluation, etc. The target motion trajectory information is of great significance to target state monitoring, target motion state prediction and traffic flow control. With the continuous advancement of science and technology, there are many ways to obtain the target's trajectory information. For example, the active civil aviation surveillance system can use secondary surveillance radar technology and ADS-B technology to monitor civil aviation aircraft and move the target Trajectory monitor...

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Application Information

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IPC IPC(8): G01C21/00
CPCG01C21/005
Inventor 张海瀛贺文娇王伟
Owner 10TH RES INST OF CETC
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