Method for tracking trajectories of hypersonic velocity near space aircraft

A near-space, hypersonic technology, applied in three-dimensional position/channel control and other directions, which can solve problems such as reducing target accuracy and model error

Active Publication Date: 2015-07-15
XIDIAN UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

In fact, the adjacent space is far from being a vacuum, so the impact on the flight status of hypersonic near-space vehicles cannot

Method used

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  • Method for tracking trajectories of hypersonic velocity near space aircraft
  • Method for tracking trajectories of hypersonic velocity near space aircraft
  • Method for tracking trajectories of hypersonic velocity near space aircraft

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Embodiment Construction

[0054] The present invention will be further described below in conjunction with accompanying drawing:

[0055] Based on mechanical analysis, the present invention fundamentally reflects the motion characteristics of a hypersonic near-space vehicle. According to Newton's second law and aerodynamic theory, the force analysis is carried out on the cruising and re-entry sections of a hypersonic near-space vehicle. The motion model of the center of mass can be used to obtain the motion law of its flight around the earth in a two-dimensional plane, that is, the two-dimensional flight dynamics (2D-FDM) model.

[0056] refer to figure 1 , is a flow chart of a track tracking method for a hypersonic approaching space vehicle of the present invention. The track tracking method of the hypersonic near-space vehicle comprises the following steps:

[0057] Step 1. According to the gravitational force, aerodynamic drag and aerodynamic lift experienced by the hypersonic near-space vehicle d...

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Abstract

The invention belongs to the technical field of radar target tracking, and particularly relates to a method for tracking trajectories of a hypersonic velocity near space aircraft. The method comprises the following specific steps of: according to earth universal gravitation, aerodynamic resistance and an aerodynamic lifting force which are applied to the hypersonic velocity near space aircraft in the cruise phase, establishing a motion model of the hypersonic velocity near space aircraft in the cruise phase; according to earth universal gravitation, aerodynamic resistance, an aerodynamic lifting force and an engine controlling force which are applied to the hypersonic velocity near space aircraft in the reentry phase, establishing a motion model of the hypersonic velocity near space aircraft in the reentry phase; according to echoed data of the hypersonic velocity near space aircraft in the cruise phase and in the reentry phase, obtaining the trajectories of the hypersonic velocity near space aircraft in the cruise phase and in the reentry phase; removing trace points which do not accord with the motion models of the hypersonic velocity near space aircraft from the trajectories of the hypersonic velocity near space aircraft in the cruise phase and in the reentry phase.

Description

technical field [0001] The invention belongs to the technical field of radar target tracking, and in particular relates to a track tracking method of a hypersonic near-space vehicle. The invention improves the accuracy of target tracking by establishing an improved motion state model of the hypersonic near-space vehicle. Background technique [0002] Adjacent space generally refers to the airspace between 20-100km from the ground, that is, the space between ordinary aircraft flight space and satellite orbit space. Near-space aircraft refers to aircraft that can fly in close space to perform specific tasks. It can provide more and more accurate information than satellites (relative to a specific area), save the cost of using satellites, and reduce the cost of using satellites compared to ordinary aircraft. Chance of being attacked by ground enemies. Hypersonic aircraft is a new type of weapon that operates in near space and achieves rapid global strikes through high-speed fl...

Claims

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Application Information

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IPC IPC(8): G05D1/10
Inventor 廖桂生徐雪菲廖瑞乾杨志伟
Owner XIDIAN UNIV
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