Method and device for determining infrared characteristic influence parameters of ship

Abstract

The invention relates to a method and a device for determining ship infrared characteristic influence parameters. The method comprises the following steps of: pre-establishing a relation equation among effective infrared radiation data of each surface element on a ship target, a plurality of environment parameters and a plurality of to-be-solved parameters; acquiring n * m groups of test data of corresponding surface elements of the vessel target in an actual scene; inputting each m groups of test data into the relation equation to obtain a group of nonlinear constraint equations taking a plurality of to-be-solved parameters as variables, and solving each group of nonlinear constraint equations by adopting a Newton method to obtain a corresponding group of to-be-solved parameter estimated values; and calculating a confidence interval of each to-be-solved parameter according to the n groups of estimated values of the to-be-solved parameters, determining an estimated value falling in the corresponding confidence interval in the n estimated values of each to-be-solved parameter, and determining a target value corresponding to the to-be-solved parameter according to the estimated value falling in the corresponding confidence interval in the n estimated values of each to-be-solved parameter. The accuracy of the to-be-solved parameters can be improved.

Description

technical field [0001] The invention relates to the technical field of ship infrared characteristic research, in particular to a method and a device for determining parameters influencing the infrared characteristics of a ship. Background technique [0002] In the real sea battlefield environment, the complexity and variability of the infrared characteristics of the ship target at sea is one of the main difficulties in the research of the infrared characteristics of the ship target. On the one hand, the infrared characteristics of ship targets are external characteristics and have strong coupling with the surrounding environment. In fact, the infrared characteristics of ship targets are not only related to the inherent properties of the target itself (for example, the infrared emissivity, reflectivity, area, geometry of the surface, etc.) It is determined by ambient temperature, wind speed, wind direction, solar irradiation, etc.), and is closely related to the infrared bac...

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Problems solved by technology

On the other hand, for non-cooperative ship targets, only their simple dimensions and photo data can be obtained through normal means, and key information such as thermal boundary conditions, infrared physical properties, and dynamic conditions are difficult to grasp, and the research on infrared characteristics is even more difficult.

Even if it is a cooperative ship target, due to the uncontrollability of the sea environmental conditions, the deviation of the ship's own physical parameter measurement, and the change of the surface radiation characteristics caused by the use, the research object of the infrared characteristics of the ship target will be in a certain "non-standard". It is difficult to evaluate its infrared characteristics through simple simulation modeling, experimental testing and other means alone

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