A stereo photogrammetry system for model position and attitude measurement in hypersonic wind tunnel testing

In this paper, a measurement system based on stereo photogrammetry is proposed for position and attitude measurements of test models in hypersonic wind tunnel testing. Several adaptations were made to an existing stereo photogrammetry system to promote its routine use as a primary wind tunnel measur...

Full description

Saved in:
Bibliographic Details
Published in:Review of scientific instruments 2021-07, Vol.92 (7), p.075107-075107
Main Authors: Zhang, Mingkai, Liang, Jin, Chen, Lei, Tang, Zhengzong, Zong, Yulong
Format: Article
Language:English
Subjects:
Attitudes
Cameras
Coordinates
Hypersonic wind tunnels
Object recognition
Parameter estimation
Photogrammetry
Position measurement
R&D
Research & development
Scientific apparatus & instruments
Target recognition
Vibration measurement
Wind tunnel testing
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, a measurement system based on stereo photogrammetry is proposed for position and attitude measurements of test models in hypersonic wind tunnel testing. Several adaptations were made to an existing stereo photogrammetry system to promote its routine use as a primary wind tunnel measurement system. First, cameras were installed in the wind tunnel test section to decrease the measurement distance and increase the base length, which helped improve the measurement accuracy. To deal with camera vibration caused by the freestream, a camera orientation method is proposed to estimate the exterior parameters of each frame relative to the tunnel coordinate system. Second, a scheme to determine the model coordinate system is proposed, which does not require placement of the targets at known locations of the model. Third, to solve the recognition problem of motion-blurred target images, a network was adopted for stereo deblurring and a stereo blur dataset simulating the wind tunnel test environment was generated for network training. To develop the novel stereo photogrammetry system, experiments were conducted in both the laboratory and a hypersonic wind tunnel at the China Aerodynamics Research and Development Center. The experimental results suggest that the proposed measurement system is practicable for position and attitude measurements of test models in hypersonic wind tunnel testing.
ISSN:0034-6748
1089-7623
DOI:10.1063/5.0059161