发明名称 |
High accuracy data acquisition port for environmental chamber photogrammetry |
摘要 |
An improved system and method for obtaining photogrammetric measurements which eliminates optical distortions created by thermal gradients on windows that are used to protect the photogrammetry camera. A gate valve is introduced between the window and the wall that opens for a limited time to allow the camera to take measurements of a test article contained within a thermal testing chamber. This limits or eliminates any thermal gradients on the window and improves photogrammetric measurements. With a gate valve the window can be removed entirely, as the gate valve can prevent a thermal gradient from being introduced to the lens of the photogrammetry camera. The improved system is suited for making close-in photogrammetric measures of test articles on earth.
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申请公布号 |
US6353474(B1) |
申请公布日期 |
2002.03.05 |
申请号 |
US20000548482 |
申请日期 |
2000.04.13 |
申请人 |
HUGHES ELECTRONICS CORPORATION |
发明人 |
KUCHARSKI THADDEUS;AGER GRANT;BARBOSA JOSE J.;CONTE ROBERTO;LINK GREGORY H.;MCKAY WILLIAM D.;TOM ALAN W.;BRENNAN, III WILLIAM J. |
分类号 |
G01C11/02;(IPC1-7):G01J1/42 |
主分类号 |
G01C11/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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