Motion platform gesture sensing method based on polarized electromagnetic wave information chain

A motion platform, attitude perception technology, applied in measurement devices, instruments, surveying and navigation, etc., can solve the problems of difficulty in manufacturing and high cost of navigation and attitude navigation equipment, and achieve the effect of reducing costs

Active Publication Date: 2012-12-26
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

These requirements make attitude navigation equipment costly and even difficult to manufacture

Method used

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  • Motion platform gesture sensing method based on polarized electromagnetic wave information chain
  • Motion platform gesture sensing method based on polarized electromagnetic wave information chain
  • Motion platform gesture sensing method based on polarized electromagnetic wave information chain

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Embodiment Construction

[0019] The steps of the inventive method are as follows:

[0020] Step 1: The base station calibrates the geographic coordinate system and determines the attitude reference;

[0021] Step 2: The base station measures the elevation angle θ′ and azimuth angle to the moving platform And determine the polarization ellipse tilt angle γ' of the transmitted signal under the geographic coordinate system, so as to determine the relationship between the transmitted signal wave structure vector and the attitude reference;

[0022] Step 3: The motion platform receives the polarized electromagnetic wave signal from the base station through the polarization-sensitive array antenna, and processes the signal to obtain the direction of arrival of the electromagnetic wave and polarization parameters (γ, η), determine the structure vector of the polarized electromagnetic wave under the motion platform coordinate system, thereby obtain the conversion matrix of the motion platform coordinate sy...

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Abstract

The invention discloses a motion platform gesture sensing method based on a polarized electromagnetic wave information chain, belonging to the field of motion platform gesture detection and navigation. The motion platform gesture sensing method comprises the steps: under the condition that an electromagnetic wave information chain exists between a base station and a motion platform, by processing received signals by a polarization sensitive array, the motion platform processes acquires the wave arrival direction and the polarization parameters of electromagnetic waves from the base station so as to determine the structural vector of the electromagnetic waves, and a gesture reference calibrated by the base station is transferred to the motion platform through the polarized electromagnetic waves to obtain the motion platform gesture under a geographic coordinate system. The method disclosed by the invention is different from a trigonometric calculation method requiring multimetering, can realize gesture sensing by means of only a base station signal and a single receiving point on the motion platform, and can replace a gesture navigator and a heading navigator.

Description

technical field [0001] The invention relates to a posture perception method, in particular to a motion platform posture perception method based on a polarized electromagnetic wave information chain, and belongs to the field of motion platform posture detection and navigation. Background technique [0002] The attitude information of the motion platform is mostly obtained from the inertial navigation sensor. Inertial navigation sensors include mechanical, optical fiber, laser gyroscope and other devices. The structure is complex, which not only takes up space, increases mass, but also consumes energy, increases the failure rate, and because it will accumulate errors, it often needs to be fused with other information. [0003] In some aerospace applications, there are special requirements for attitude navigation, such as fast measurement speed, high precision, small volume, mass, and energy consumption, resistance to large acceleration, radiation, extreme temperature, and vibr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/00G01C21/24
Inventor 陈广东李成珠
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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