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Ballistic missile whole-course ballistic estimation method and system based on improved autonomous multi-model

A ballistic missile, multi-model technology, applied in the field of target tracking, can solve the problems of the overall performance decline of the tracker and the inapplicability of the whole ballistic tracking of the ballistic missile, and achieve the effect of good application value and reducing errors.

Pending Publication Date: 2021-01-22
PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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Problems solved by technology

When this condition is not met, competition among sub-models occurs, which may lead to a decrease in the overall performance of the tracker
Therefore, the traditional IMM algorithm is not suitable for the full trajectory tracking of ballistic missiles

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  • Ballistic missile whole-course ballistic estimation method and system based on improved autonomous multi-model
  • Ballistic missile whole-course ballistic estimation method and system based on improved autonomous multi-model
  • Ballistic missile whole-course ballistic estimation method and system based on improved autonomous multi-model

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Embodiment Construction

[0026] In order to make the purpose, technical solution and advantages of the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and technical solutions.

[0027] In maneuvering target tracking, in order to meet the full trajectory tracking of ballistic missiles, the embodiment of the present invention, see figure 1 As shown, a ballistic missile full trajectory estimation method based on improved autonomous multi-model is provided, which includes the following contents:

[0028] S101. Construct a motion model set for full trajectory estimation, the model set at least includes: an accurate dynamic sub-model for non-maneuvering segment detection and a three-dimensional current statistical sub-model for maneuvering segment detection;

[0029] S102. According to the change of the motion state of the missile during the maneuver detection, the hard decision is adopted to switc...

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Abstract

The invention belongs to the technical field of target tracking, and particularly relates to a ballistic missile whole-course ballistic estimation method and system based on improved autonomous multi-model, and the method comprises the steps: constructing a motion model set for whole-course ballistic estimation, wherein the model set at least comprises an accurate power sub-model for non-maneuvering section detection and a three-dimensional current statistical sub-model for maneuvering section detection; according to the change of the motion state of the missile in maneuvering detection, adopting a hard decision to perform sub-model switching by setting the probability of the sub-model so as to achieve full-flight-stage tracking of the ballistic missile. According to the method, the whole-course trajectory estimation of the ballistic missile is achieved based on the improved autonomous multi-model of the hard decision, the stable tracking of the ballistic missile in the whole flight stage is achieved, and meanwhile, the error of the non-maneuvering trajectory estimation is reduced; because the missile is in the free section of the non-maneuvering section for a long time, the schemehas a good application value for the whole-course stable tracking and high-precision trajectory estimation of the ballistic missile.

Description

technical field [0001] The invention belongs to the technical field of target tracking, in particular to a method and system for ballistic missile full trajectory estimation based on improved autonomous multi-model. Background technique [0002] The full trajectory of a ballistic missile can usually be divided into three stages: the active stage, the free stage and the re-entry stage. The dynamic characteristics of these three stages are significantly different. Among them, the active segment and the re-entry segment are highly mobile, and it is impossible to establish an accurate model for the defender, but the duration is relatively short; while the free segment is usually only affected by the gravity of the earth, and the movement regularity is strong, so a more accurate dynamic model can be established. And lasts the longest, accounting for almost 90% of the entire trajectory. Since the dynamic characteristics of ballistic missiles in different stages are significantly ...

Claims

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Application Information

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IPC IPC(8): G06F30/20F41G7/22
CPCG06F30/20F41G7/22Y02T90/00
Inventor 吴楠孟凡坤王锋丁力全程鹏举韩卓茜王静
Owner PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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