Real-time processing method for underwater target track outlier by digital display platform

Abstract

The invention discloses a real-time processing method for an underwater target track outlier by a digital display platform, a whole algorithm and process are innovatively designed, the outlier is processed by a five-point and nine-point combined linear prediction method based on time information, a threshold value is set according to the length of a position information measurement period and the motion characteristics of an underwater target. Meanwhile, an automatic track correction scheme is provided, and the correct track can be automatically recovered when the track deviates after outlier processing due to factors such as instability of multiple pieces of track data. The method has the advantages that (1) the algorithm starting speed is high; (2) the real-time requirement of outlier processing is met; (3) the invention has a good effect of eliminating the track outliers of the underwater target, and is stable in performance; (4) the system can still operate normally when the underwater target position information transmission is out of order. and (5) the track can be automatically corrected when the track deviates after outlier processing due to a large error of a plurality of continuous measurement values.

Description

technical field [0001] The invention relates to a method for calculating the underwater target track, in particular to a real-time processing method for the outlier value of the underwater target track. Background technique [0002] The indicator display platform needs to receive the position information of various underwater targets sent by the measuring equipment at specific time intervals, and display the target track in real time and accurately. Factors such as the complex and changeable underwater acoustic environment and random interference will lead to large random errors in the measured target position information. These position information deviate far from the true value and affect the normal processing and display of the track. They are called outliers or abnormalities. value. Compared with air targets, the movement speed of underwater targets is low, and the period for equipment to measure target position information is long. The error of target position informa...

AI Technical Summary

Problems solved by technology

When these algorithms are applied to underwater targets, there is a problem of poor stability of the algorithms, and it is easy to judge the normal data as outliers, especially when one or more measured values ​​are unstable or have large errors. In the process of replacing the measured value, the result of track deviation is easy to appear

The main reason is that the estimated position is affected by the large error of the measurement value of the underwater target, resulting in unstable and inaccurate results, and the threshold setting does not take into account the long measurement period of the positioning information and the movement characteristics of the underwater target.

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