A Method for Determining Space Attitude of Aircraft in the Atmosphere Using Natural Light Polarization Mode
A polarization mode and space attitude technology, applied in astronomical navigation and other directions, to achieve the effect of reasonable design and no cumulative error
Active Publication Date: 2016-09-28
ZHONGBEI UNIV
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[0006] In order to solve the above-mentioned problems existing in the existing navigation methods for space operating bodies, the present invention provides a method for determining the three-dimensional attitude of an aircraft in the atmosphere by using the polarization mode of natural light
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[0033] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0034] A method for determining the space attitude of an aircraft in the atmosphere by using a natural light polarization mode, comprising the steps of:
[0035] (1), establish the body coordinate system, take the center of mass of the aircraft as the origin O b , X b The axis (longitudinal axis) is located in the plane of symmetry of the aircraft, parallel to the axis of the fuselage, and positive forward; Y b The axis (horizontal axis) is perpendicular to the plane of symmetry of the aircraft, positive to the right; Z b The axis (vertical axis) is located in the plane of symmetry of the aircraft and is positive downward;
[0036] Establish a reference coordinate system, the origin O a at a point on the ground, X a Axis points in the direction of true north, Y a Axis points due east, Z a Axis straight down; with X a o a Y a The plan...
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The invention discloses a method for determining spatial attitude of an aircraft in atmosphere by utilizing natural light polarization mode, and relates to navigation technology, in particular to a three-dimensional positioning method utilizing atmosphere polarized light. The method is implemented by the following steps: (1) acquiring atmosphere polarization modes online in real time by utilizing a spherical sensor array; (2) taking the acquired atmosphere polarization modes as initial data of a three-dimensional attitude fixing model, and analyzing and solving an included angle between the solar meridian and a body axis and the position coordinate of the sun projection point in a body coordinate system by utilizing the data; (3) determining a yaw angle by utilizing the included angle between the meridian and the body axis; and (4) solving a pitch angle and a roll angle by utilizing an attitude algorithm formula. According to the method, the design is reasonable; three-dimensional attitude fixing is performed by utilizing the atmosphere polarization modes; a very good technical means is provided; the method has completely independent characteristics; the three-dimensional attitude of the aircraft can be solved by performing distributed detection on the atmosphere polarization modes in real time; the method is simple and feasible and does not have a cumulative error; meanwhile, the polarization information exists in visible light in the atmosphere, and artificial large-area interference and damage cannot be implemented easily.
Description
technical field [0001] The invention relates to a method for autonomously measuring the space attitude of an aircraft, in particular to a method for determining the space attitude information of a moving carrier (aircraft) in the atmosphere by using the polarization mode of atmospheric natural light. Background technique [0002] At present, bionic navigation research using atmospheric polarization patterns by imitating insects is considered to be a promising new direction, which can provide a new navigation method for micro-aircraft, which is currently the focus of research. Atmospheric polarization mode is a form of stable distribution formed by sunlight entering the atmosphere and scattering of air molecular ions. It is a natural attribute of the earth. The direction information contained in it can provide heading information for insects. It is purely autonomous and not easily affected by external forces. characteristics of interference. [0003] Studies have shown that ...
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IPC IPC(8): G01C21/02
CPCG01C21/02
Inventor 刘俊唐军任建斌石云波李杰张晓明王飞张楠
Owner ZHONGBEI UNIV