公开(公告)号：US4717258A

公开(公告)日：1988-01-05

申请号：US815148

申请日：1985-12-31

Applicant: C. Sean Sutton

Inventor： C. Sean Sutton

IPC: G01J3/40

CPC classification number: G01J3/40

Abstract: A densitometer providing simultaneous sensing of the density in precisely adjacent portions of plural adjacent tracks. The densitometer preferably operates with stellar a pattern in which two reference tracks have been photographically recorded either side of a central specimen track of a star. The simultaneous detection of the three tracks insures a high degree of alignment between the reference and star tracks so that the correlation of their relative positions is a more accurate indication of the shift between the reference and star tracks. Alignment controls and the ability to microscopically view the radiation path through the densitometer facilitates set-up of the system to the high accuracy of results that it can achieve.

Abstract translation: 密度计提供在多个相邻轨道的精确相邻部分中的密度的同时感测。 密度计优选以恒星的图案操作，其中两个参考轨迹已被照相地记录在星的中心标本轨道的任一侧上。 三个轨道的同时检测确保参考轨迹和星形轨迹之间的高度对准，使得它们的相对位置的相关性更准确地指示参考轨迹和星形轨迹之间的偏移。 对准控制和通​​过密度计微观观察辐射路径的能力有助于将系统设置到可以实现的高精度的结果。