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Method for constructing seeker guidance information of half-strapdown seeking

A technology of guidance information and construction method, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of low EKF filtering estimation accuracy, increasing seeker volume, and increasing seeker hardware costs, etc.

Inactive Publication Date: 2013-06-12
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Due to the low accuracy of EKF filter estimation, the construction accuracy of guidance information is not ideal
[0007] 3) Direct measurement and acquisition, but this will increase the hardware cost of the seeker and increase the volume of the seeker

Method used

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  • Method for constructing seeker guidance information of half-strapdown seeking
  • Method for constructing seeker guidance information of half-strapdown seeking
  • Method for constructing seeker guidance information of half-strapdown seeking

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Embodiment Construction

[0090] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings.

[0091] The present invention comprises the following steps: (as figure 1 shown)

[0092] 1) Establish a semi-strapdown homing seeker frame dynamics mathematical model

[0093] According to the momentum moment theorem, the frame dynamic model of the two-frame semi-strapdown homing seeker is established as follows:

[0094] λ · · z = T oz - β 3 α 3 T oy - [ ( β 1 ...

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Abstract

The invention relates to a method for constructing missile guidance information, in particular to a method for constructing seeker guidance information of half-strapdown seeking, and belongs to the technical field of missile guidance system design. The invention provides a new method for constructing the seeker guidance information of half-strapdown seeking; and the method carries out frame angular rate evaluation based on Unscented Kalman filter (UKF), then carries out guidance information construction, effectively improves the construction precision of the guidance information, prevents error amplification caused by the method for acquiring angular rate by directly carrying out angular differentiation for a frame, has high guidance information precision compared with the method adoptingEKF filter construction, and can control the missile to fly to a target according to the proportional guidance under disturbance condition. The method can be widely applied to various guidance weapons of half-strapdown seeking, and has important military application prospect.

Description

technical field [0001] The invention relates to a missile guidance information construction method, in particular to a semi-strapdown homing seeker guidance information construction method, which belongs to the technical field of missile guidance control system design. Background technique [0002] The characteristic of the semi-strapdown seeker head is that the inertial measurement element on the gimbal seeker is removed from the platform, and directly strapped on the missile body to measure the angular velocity of the missile body in three directions. The base is rigidly connected to the elastic body. The advantage of the semi-strapdown homing seeker is that it reduces the installation space of the platform, the mechanical structure is relatively simple, it is easy to miniaturize, and the cost is low. The disadvantage is that there is no mechanically independent stable platform system to isolate the movement of the projectile, so the movement of the projectile will be cou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42B15/01G06F17/50
Inventor 宋建梅范健华
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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