Airborne distributed POS (position and orientation system) transfer alignment method and device

A transfer alignment and distributed technology, applied in the field of navigation systems, can solve the problems affecting the measurement accuracy of subsystem motion parameters, etc.

Active Publication Date: 2018-03-06
BEIHANG UNIV
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Problems solved by technology

Due to the complexity of the aircraft body, especially the wing part, it becomes deflected and deformed, so the spatial distance (lever arm) and relative attitude between the main and subsystems are n...

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  • Airborne distributed POS (position and orientation system) transfer alignment method and device
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  • Airborne distributed POS (position and orientation system) transfer alignment method and device

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Embodiment Construction

[0066] The technical solutions in the embodiments of the present invention will be checked and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0067] Each will be described in detail below.

[0068] The terms "first", "second", "third" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described her...

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Abstract

The embodiment of the invention provides an airborne distributed POS (position and orientation system) transfer alignment method and an airborne distributed POS transfer alignment device. By the airborne distributed POS transfer alignment method, measured values of deformation displacement and deflection angle, which are obtained by high-precision optical equipment, are introduced for establishingdirect constraint relationships between the two and a position error and a deflection angle in state variables respectively; based on the conventional matching of the orientation and the speed, matching of the position and the deflection angle is added to form new matching of the orientation, the speed, the position and the deflection angle so as to obtain a new measurement equation; through Kalman filtering, random errors of the measured values of the optical equipment are eliminated and more accurate estimation of the state variables of the position error and the deflection angle is achieved, so that the estimation accuracy of the position, the speed and the orientation of a subsystem is improved.

Description

technical field [0001] The invention relates to the field of navigation systems, in particular to a method and device for airborne distributed POS transfer alignment. Background technique [0002] The airborne comprehensive earth observation system integrating multiple and various remote control loads has become one of the key development directions of earth observation, such as integrated camera, imaging spectrometer, large field of view infrared scanner, laser radar, synthetic aperture radar ( Synthetic Aperture Radar, referred to as SAR) in the same aircraft multi-tasking load, and airborne array antenna SAR, etc. Each remote sensing payload or each SAR antenna needs high-precision motion parameters to achieve high-precision imaging. [0003] Distributed Position and Orientation System (DPOS) is currently the main means for airborne earth observation remote sensing payloads to obtain multi-node position, velocity, attitude and other motion parameters. Its main components...

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Application Information

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IPC IPC(8): G01C21/20G01C21/18
CPCG01C21/18G01C21/20
Inventor 宫晓琳刘刚房建成卢兆兴
Owner BEIHANG UNIV
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