Multi-mode filtering method

A filter, maneuverable technology used in radio wave measurement systems, instruments, etc.

Active Publication Date: 2016-07-06
SHANGHAI INST OF ELECTROMECHANICAL ENG
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  • Abstract
  • Description
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Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-mode filtering method to solve the problem of how to obtain the three-dimensional position of large dive and large maneuvering targets through multi-mode switching filtering under interference conditions

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Embodiment Construction

[0042] A multi-mode filtering method proposed by the present invention will be further described in detail below with reference to the drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that the drawings are all in a very simplified form and use imprecise ratios, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0043]The core idea of ​​the present invention is that the multi-mode filtering method provided by the present invention can be applied to the calculation of the target position of the maneuvering target under maneuvering situations such as large dives and serpentine maneuvers, and can provide available target three-dimensional guidance information for real-time missile launches . The multi-mode filtering method adopts the basic structure of synchronous parallel computing of α-β filte...

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Abstract

The invention provides a multi-mode filtering method, and the method comprises the steps: receiving detection data; enabling a filter to carry out point removal judgment: enabling the filter to carry out resetting judgment if there is point removable identification, or else, calculating an output value of alpha-beta filtering and an output value of alpha-beta-gamma filtering; judging whether a mechanical operating identification is true or not through mechanical operation: outputting an output value of alpha-beta-gamma filtering if the mechanical operating identification is true, or else, judging whether the mechanical operating identification at a last observation moment is true or not; outputting the output value of alpha-beta-gamma filtering if the mechanical operating identification at the last observation moment is true, or else, outputting the output value of alpha-beta filtering. The method employs a fundamental structure of alpha-beta filtering and alpha-beta-gamma filtering synchronization parallel calculation, and the observation accumulation windows of two filters are different in size, and are very suitable for non-mechanical operating condition and mechanical operating condition. According to a mechanical recognition result, the method switches the output of the filters in real time, and can calculate the target position accurately and efficiently.

Description

technical field [0001] The invention relates to the field of fire control of air defense missile weapon systems, in particular to a multimode filtering method. Background technique [0002] The maneuvering target model is one of the basic elements of the maneuvering target tracking theory. Any target tracking is researched on the basis of one or some motion models, while the dynamic model of the object is based on various geometric laws of motion (such as linear motion , curved motion) as the basis. Newton's law is the basis for describing the law of target motion. When establishing a maneuvering target model, the general principle is that the established model should not only conform to the maneuvering reality, but also be convenient for mathematical processing. When the target is moving non-maneuvering, this kind of motion model is easy to establish, but for the maneuvering moving target, the ideal modeling becomes very difficult, because in most cases, the prior knowl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02
Inventor 陈宇威杜思伟朱晶星曹颖颖郑晟
Owner SHANGHAI INST OF ELECTROMECHANICAL ENG
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