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Method for compensating direct cone error of guided projectile on basis of gyro signal reconstruction

A technology of cone error compensation and signal reconstruction, applied in navigation, mapping and navigation, and navigation through velocity/acceleration measurement, etc., can solve problems such as inapplicability to guided shells, and achieve the effect of improving the accuracy of attitude calculation

Active Publication Date: 2018-10-19
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0004] At present, most of the coning error compensation algorithms at home and abroad are not suitable for guided projectiles, because the traditional coning error compensation algorithms are based on non-spin classical conical motion, while guided projectiles have spin

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  • Method for compensating direct cone error of guided projectile on basis of gyro signal reconstruction
  • Method for compensating direct cone error of guided projectile on basis of gyro signal reconstruction
  • Method for compensating direct cone error of guided projectile on basis of gyro signal reconstruction

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Embodiment Construction

[0029] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0030] The present invention provides a direct coning error compensation method for guided projectiles based on gyro signal reconstruction, which simplifies the actual guided projectile motion environment into an environment where regular precession and general linear angular rate maneuvers coexist, wherein the angular rate of regular precession is in Projection ω on projectile coordinate system b RP See formula (1), the projection ω of the angular rate of the general linear angular rate maneuver on the projectile coordinate system b GL See formula (2). Projectile coordinate system (o b x b the y b z b , referred to as b series) origin o b At the center of mass of the projectile and fixed to it, x b Axis forward along the longitudinal axis of the projectile, y b axis and x b axis and z b Axes form a right-handed Cartesian coordinate system, such ...

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Abstract

The invention discloses a method for compensating the direct cone error of a guided projectile on the basis of gyro signal reconstruction. By the use of the method disclosed by the invention, the coneerror of the guided projectile can be effectively compensated. The method disclosed by the invention has the benefits that according to the high dynamic characteristics of the guided projectile, an actual guided projectile moving environment is simplified to an environment in which regular precession and general linear angular rate maneuver coexist; the method for compensating the direct cone error of the guided projectile on the basis of the gyro signal reconstruction is designed, so that the compensation for the non-commutative error of a rotation vector is completed. Therefore, not only can the attitude calculation precision of the guided projectile be effectively improved, but also a high dynamic environment is fully considered, and a good foundation is laid for the guidance and the control research of the guided projectile.

Description

technical field [0001] The invention relates to the field of high dynamic attitude measurement, in particular to a direct cone error compensation method for guided projectiles based on gyro signal reconstruction. Background technique [0002] Guided artillery shells have the characteristics of small collateral damage and strong lethality to the intended target, and are one of the important directions for the development of armies of various countries. Accurate measurement of projectile attitude is the basis for precise guidance and control. [0003] In view of the high overload, high rotation and high dynamic characteristics of the guided projectile, a combination of high dynamic gyroscopes can be used to measure the attitude of the guided projectile. However, non-exchangeable errors, that is, coning errors, inevitably occur in the attitude measurement process. Especially for high-rotating projectiles (roll rate ≥ 10r / s), this coning error will be more intense. Therefore,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/00G01C21/16
CPCG01C21/005G01C21/165
Inventor 邓志红付梦印尚剑宇刘彤刘宁
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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