Ballistic missile boosting section tracking method based on dimension-augmenting shifted Rayleigh filtering

A ballistic missile and booster stage technology, applied in navigation calculation tools and other directions, can solve problems such as axial acceleration and mass consumption rate correction, tracking failure, etc.

Inactive Publication Date: 2013-03-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problem of tracking failure due to the inability to correct the axial acceleration and mass consumption rate in the existing...

Method used

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  • Ballistic missile boosting section tracking method based on dimension-augmenting shifted Rayleigh filtering
  • Ballistic missile boosting section tracking method based on dimension-augmenting shifted Rayleigh filtering
  • Ballistic missile boosting section tracking method based on dimension-augmenting shifted Rayleigh filtering

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specific Embodiment approach 1

[0052] Specific implementation mode one: the ballistic missile boosting section tracking method based on the Rayleigh filtering of the expansion-dimensional drift described in the present implementation mode, it includes the following steps:

[0053] Step 1: Use the i-th spaceborne infrared sensor to obtain the azimuth α of the target ballistic missile in the boost phase in real time i (k) and pitch angle β i (k), i is 1 or 2, and then according to the real-time three-dimensional space position of the i-th spaceborne infrared sensor The three-dimensional space position of the target ballistic missile is obtained by cross positioning, and the tracking initial state expression of the boost phase of the target ballistic missile in the pilot / follow constellation mode is established:

[0054] X init = x 1 ...

specific Embodiment approach 2

[0073] Specific implementation mode two: the following combination figure 1 Describe this embodiment. This embodiment is a further description of Embodiment 1. The state described in Step 3 of this embodiment is obtained by one-step prediction. The expression is:

[0074] X ^ ( k | k - 1 ) = F X ^ ( k - 1 | k - 1 ) + G c W ( ) ,

[0075] F is the state transition matrix, G c is the control matrix, W() is the input model, k is the sequence of sampling time, which is a positive integer,

[0076] is the state of the target ballistic missile at the k-1th moment;...

specific Embodiment approach 3

[0101] Embodiment 3: This embodiment is a further description of Embodiment 1 or 2. The value range of the axial acceleration amplitude γ of the target ballistic missile in this embodiment is 30-50.

[0102] The value of γ is generally selected according to the range of the target missile, and its value is between 30 and 50.

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Abstract

The invention discloses a ballistic missile boosting section tracking method based on dimension-augmenting shifted Rayleigh filtering, and belongs to the technical field of boosting section tracking of a ballistic missile, in order to solve the problem that in the existing boosting section tracking method for the ballistic missile, because the axial acceleration and quality consumption velocity are difficult to amend, and the tracking is invalid. The observability problem of the boosting section tracking of the ballistic missile is solved thoroughly by adopting dual-star navigation/following constellation configuration; secondly, a driving section ballistic missile real model is drawn close by adopting an interactive multi-mode method, and the accurate modeling problem is solved; and finally a modified centralized shifted Rayleigh filtering method is deduced to achieve driving section continuous tracking, and the filtering gain is subjected to self-adaptive adjustment by introducing UT (ultrasonic test) conversion on the basis so as to solve the problem that the traditional shifted Rayleigh filtering can not amend the asymmetrical state of a platform and a target. The ballistic missile boosting section tracking method provided by the invention is suitable for boosting section tracking of the ballistic missile.

Description

technical field [0001] The invention relates to a ballistic missile boost segment tracking method based on dimension-expansion drift Rayleigh filtering, and belongs to the technical field of ballistic missile boost segment tracking. Background technique [0002] There are several difficulties in tracking the boost phase of ballistic missiles: [0003] First of all, ballistic missiles can usually only obtain angle information from high-orbit space-borne infrared sensors during the boost phase, and there is an observability problem; The size, shutdown time, program turning duration, etc. are all unknown, and it is difficult to establish an accurate motion model; finally, the tracking model and measurement model of the active segment of the ballistic trajectory are highly nonlinear, and it is necessary to achieve more accurate tracking with less measurement information , requires mature and effective nonlinear estimation techniques. [0004] The traditional drifting Rayleigh ...

Claims

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Application Information

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IPC IPC(8): G01C21/20
Inventor 刘梅俞建国位寅生
Owner HARBIN INST OF TECH
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