In-flight performance of the Canadian Astro-H Metrology System

Gallo, Luigi; Koujelev, Alexander; Gagnon, Stéphane; Elgin, Timothy; Guibert, Martin; Iizuka, Ryo; Ishida, M.; Ishimura, Kosei; Iwata, Nobuhisa; Kawano, Taro; Lambert, Casey; Moroso, Franco; Ueno, S.; Yuasa, Takayuki

doi:10.1117/1.jatis.4.2.021405

Cited by 6 publications

(3 citation statements)

References 14 publications

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“…The lateral system is based on previous instrument heritage from the Canadian Metrology System (CAMS), built by NDG for JAXA. 16 CAMS flew on the Hitomi mission and successfully provided data before the mission was terminated. This data (shown in Fig.…”

Section: Previous Flight Datamentioning

confidence: 99%

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Interpolation methods for tracking spacecraft in ultratight formation

Bradshaw

Gao

Homewood

2019

J. Astron. Telesc. Instrum. Syst.

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By measuring the centroid of a beam on a detector, one can track the movement of that beam across the detector. By tracking this movement, one can track the object encompassing the detector, for example, a spacecraft. A variety of system-specific performance inhibitors can make this a challenge, requiring a robust calibration method. The goal of this investigation is to model the true beam position of the instrument in terms of the measured beam position. For this, a mathematical model is created that interpolates and corrects the measured beam position using precollected position data-a "calibration model." The real-world scenario for this investigation is the flight-representative model of the fine lateral and longitudinal sensor (FLLS) instrument, built by Neptec Design Group and Neptec UK for the European Space Agency mission PROBA-3. Performance inhibitors for FLLS are cropping of the beam, imperfect optics, and a varying distance the beam has traveled (up to 250 m). Using bivariate spline interpolation for the FLLS calibration model gives the best performance, achieving a measurement accuracy well within the mission requirement of <300 μm.

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Section: Previous Flight Datamentioning

confidence: 99%

“…6 Flight data from the CAMS unit on-board JAXA's Hitomi satellite, with the color scale showing the relative intensity of each beam. 16 The same detector used in CAMS is being used in FLLS. (a) CAMS1 intensity map and (b) CAMS2 intensity map.…”

Section: Cropping Of Return Beammentioning

confidence: 99%

Interpolation methods for tracking spacecraft in ultratight formation

Bradshaw

Gao

Homewood

2019

J. Astron. Telesc. Instrum. Syst.

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show abstract

“…In addition, as a study to reduce the structural error due to these uncertainties, kinematic coupling is utilized at the connection point between the optical bench and the satellite body to release the distortion generated due to thermal deformation, 20) or attitude control system of the entire optical bench using actuators is utilized. 21,22) However, the amount of the released error is limited. Therefore, it is necessary to clarify the effect of each uncertainty on the shape accuracy of the entire truss structure.…”

Section: Introductionmentioning

confidence: 99%