A Plume Perturbation Based Inertial Parameter Identification Method for Relative Navigation Targets

An inertial parameter and relative navigation technology, applied in the field of inertial parameter extraction, can solve problems such as easy collision and capture aircraft instability, achieve the advantages of accuracy and shorten the observation time

Active Publication Date: 2021-02-09
BEIJING INST OF SPACECRAFT SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Collisions are prone to occur during the operation, resulting in instability of the capture aircraft

Method used

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  • A Plume Perturbation Based Inertial Parameter Identification Method for Relative Navigation Targets
  • A Plume Perturbation Based Inertial Parameter Identification Method for Relative Navigation Targets
  • A Plume Perturbation Based Inertial Parameter Identification Method for Relative Navigation Targets

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Embodiment Construction

[0032] Such as figure 1 Shown, be the flow chart of the inventive method, mainly comprise the following steps:

[0033] (1) 3D reconstruction of non-cooperative target geometry

[0034] 3D reconstruction is a very classic and popular research field in the field of computer vision. There are already a large number of mature methods available, including stereo vision methods, active distance acquisition methods, and model-based 3D reconstruction methods. In actual use, in order to obtain a more accurate target model, several methods may need to be used in combination. For example, DLR has designed a handheld online scanning 3D reconstruction device, which is composed of stereo vision, laser and texture sensors. Installed on the manipulator to scan and reconstruct 3D objects. Kinect combines active distance acquisition and volume representation to create a more accurate 3D model of an object or scene. There are a large number of open documents in this technical field that can ...

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Abstract

A method for identifying inertial parameters of relative navigation targets based on plume disturbance, the steps are as follows: (1) 3D reconstruction of the geometric shape of the non-cooperative target; (2) complete the relative pose of the non-cooperative target based on the reconstructed geometric model Measurement; (3) adjust the position and attitude of the captured aircraft, start the thruster, and apply the plume field; (4) calculate the disturbance force and moment of the plume on the target; (5) determine the inertial parameters of the non-cooperative target. The invention utilizes the plume field produced by the thruster equipped on the capturing aircraft to act on the non-cooperative target, estimates the force and moment received by the target, and thus identifies the inertial parameters of the target.

Description

technical field [0001] The invention relates to a method for identifying inertial parameters of a relative navigation target based on plume disturbance, which is applied to the extraction of the inertial parameters of a moving target on orbit when it is relatively navigated at a short distance. Background technique [0002] On-orbit relative navigation targets can be divided into cooperative targets and non-cooperative targets. At present, the state awareness, measurement and on-orbit operation related technologies for cooperative targets are very mature. For space non-cooperative targets represented by failed satellites, space debris, and asteroids, their common features are no specific identification, no response device, no ability to perform action coordination, and they are often in a state of failure and rolling. Before implementing on-orbit capture of such non-cooperative targets on orbit, it is necessary to have a preliminary estimate of the dynamic characteristics o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/02B64G1/64B64G4/00
CPCB64G1/64B64G4/00G01D21/02
Inventor 史纪鑫王大轶王黎珍郑世贵葛东明邓润然邹元杰
Owner BEIJING INST OF SPACECRAFT SYST ENG
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