Modeling method and tracking algorithm for motor-driven irregular expansion object of unknown turning rate

Abstract

The invention provides a modeling method for a motor-driven irregular expansion object of an unknown turning rate. The method comprises the steps of 1, using Minkowski addition to decompose the complex motor-driven evolution process of the irregular expansion object H into the combination H1+H2+...+Hn of simple motor-driven evolution processes of a plurality of sub-objects H1, H2, ..., Hn; 2, when the turning rate is unknown during the motor-driven process, establishing the general evolution model for each sub-object by jointly using the turning rate, the extension form parameter and the motion state parameter; and 3, using the general evolution model and the measurement equation to build a common system model. A tracking algorithm for the motor-driven irregular expansion object of the unknown turning rate is applied to the general system model. The invention can not only solve the description problem that the irregular expansion object movement state evolutes over time in a scene that the turning rate is unknown in the typical motor-driven process, but also can fully characterize the abrupt change of the extension form, so that the whole motor-driven process can be reasonably described.

Description

Technical field [0001] The invention belongs to the field of high-precision radar target tracking and information signal processing, and is specifically a modeling method and tracking algorithm for a maneuvering irregular extended target with unknown turning rate. Background technique [0002] With the dramatic improvement of modern sensors' resolution capabilities, such as the emergence of high-resolution radars and long-range infrared imaging radars, in addition to basic motion measurement, they can also provide partial characteristic information of the target. Especially under the condition of a large enough signal-to-noise ratio, when the High Range Resolution (HRR) radar detects a target, it can obtain the characteristic reflection of the target's longitudinal range image on the radar line of sight by analyzing the HRR signal. Similarly, some long-range infrared imaging radars can provide a lateral range image of the target. In this case, the moving body measured by the ran...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the deficiencies in the prior art, the present invention provides a modeling method of irregular extended target with unknown turning rate and a supporting tracking algorithm, which can solve the movement of irregular extended target in the scene of unknown turning rate in the typical maneuvering process The description of state evolution over time can also fully characterize the mutation of the extended form, so that the entire maneuvering process can be reasonably described

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