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A Vertical Attack Guidance Method Based on Roundabout Flight

A roundabout, guided munition technology, used in offensive equipment, projectiles, self-propelled bombs, etc., can solve the problems of reduced missile hit accuracy and affect the stability of the control system, and achieve improved accuracy, low additional cost, and easy implementation. Effect

Active Publication Date: 2021-04-02
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chattering phenomenon will affect the stability of the control system, resulting in a reduction in the accuracy of missile hits

Method used

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  • A Vertical Attack Guidance Method Based on Roundabout Flight
  • A Vertical Attack Guidance Method Based on Roundabout Flight
  • A Vertical Attack Guidance Method Based on Roundabout Flight

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] The present invention provides a vertical attack guidance method based on roundabout flight. For the convenience of expression, it is divided into four stages according to the flight trajectory of the guided munition. 1 moment, t 1 = t max +δt, where t max is the maximum working time of the ammunition engine under different temperature conditions, δt is the design margin taken to ensure that the first stage covers the working time of the engine, and generally should be taken above 1s; the second stage is from t 1 Time to the vertex of the ballistic trajectory; the third stage is from the vertex of the trajectory to the altitude of the center of mass of the guided munition and descends to the altitude of the virtual target point close to the descending arc, which is described mathematically as H≤H d +δH. Among them, H d +δH is called the thresho...

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Abstract

The invention provides a roundabout flying based vertical attack guidance method. The requirement of a guidance ammunition terminal guidance stage for the overload capacity can be reduced easily, a guided missile can bypass barriers and antiaircraft fire, and the function of tactical deception can be achieved. The droppoint forecasting technique is applied, an ascending arc segment virtual targetpoint is arranged, and the maneuvering pressure of guidance ammunition is shared to the front segment and the middle segment of a trajectory; and then through combination with a descending arc segmentvirtual target point, the end point of the droppoint constraint RTPN is lifted to be over the actual target point, the guidance ammunition can continue to complete the vertical attack mission, and acertain terminal guidance allowance is made. On one hand, the maneuvering pressure of the terminal guidance segment is reduced, the precision of terminal guidance can be improved better, and engineering reliability is improved; and on the other hand, the influence of the falling difference of the firing point and the target point on the guidance scheme during actual battlefield application can beeffectively reduced, and robustness of the scheme can be improved easily.

Description

technical field [0001] The invention relates to the technical field of ammunition guidance and control, in particular to a vertical attack guidance method based on roundabout flight. Its scope of application is not limited to guided rockets, but can also be used for guided artillery shells, guided missiles and missiles. Background technique [0002] With the gradual development of radar detection technology and defense systems in modern battlefields, combat missions have put forward higher requirements for the penetration capability and survivability of guided munitions on the battlefield. Take the Tomahawk cruise missile as an example. This series of missiles flies in a roundabout way over land, bypasses obstacles and anti-aircraft firepower, and even further uses obstacles to cover the opponent's radar and other equipment to detect itself, so that it can break into and attack the target from the best direction. At the same time, the use of roundabout flight is also benefic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42B15/01
CPCF42B15/01
Inventor 孔馨婉张成常江闫智强
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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