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Picometer Level Modeling of a Shared Vertex Double Corner Cube in the Space Interferometry Mission Kite Testbed

机译:空间干涉测量风筝试验台中共享顶点双角立方体的皮米级建模

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The Space Interferometry Mission (SIM) is a microarcsecond interferometric space telescope that requires pi-cometer level precision measurements of its truss and interferometer baselines. Single-gauge metrology errors due to non-ideal physical characteristics of corner cubes reduce the angular measurement capability of the science instrument. Specifically, the non-common vertex error (NCVE) of a shared vertex, double corner cube introduces micrometer level single-gauge errors in addition to errors due to dihedral angles and reflection phase shifts. A modified SIM Kite Testbed containing an articulating double corner cube is modeled and the results are compared to the experimental testbed data. The results confirm modeling capability and viability of calibration techniques.
机译:空间干涉测量任务(SIM)是一种微秒级干涉空间望远镜,需要对其桁架和干涉仪基线进行pi-cometer级精确测量。由于角形立方体的非理想物理特性而导致的单计量计量误差降低了科学仪器的角度测量能力。具体来说,共享顶点双角立方体的非公共顶点误差(NCVE)除了由于二面角和反射相移引起的误差外,还会引入微米级的单规格误差。对包含关节双角立方体的改良SIM Kite测试床进行建模,并将结果与​​实验测试床数据进行比较。结果证实了建模能力和校准技术的可行性。

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