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Sensors 2016, 16(8), 1176; doi:10.3390/s16081176

High-Accuracy Self-Calibration for Smart, Optical Orbiting Payloads Integrated with Attitude and Position Determination

1,2,3,4
,
1,2,3,* , 4,* and 1,2,3
1
Department of Precision Instrument, Tsinghua University, Beijing 100084, China
2
State Key Laboratory of Precision Measurement Technology and Instruments, Beijing 100084, China
3
Collaborative Innovation Center for Micro/Nano Fabrication, Device and System, Beijing 100084, China
4
Photonics and Sensors Group, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, UK
*
Authors to whom correspondence should be addressed.
Academic Editor: Stefano Mariani
Received: 25 May 2016 / Revised: 21 July 2016 / Accepted: 21 July 2016 / Published: 27 July 2016
(This article belongs to the Collection Modeling, Testing and Reliability Issues in MEMS Engineering)
View Full-Text   |   Download PDF [5493 KB, uploaded 27 July 2016]   |  

Abstract

A high-accuracy space smart payload integrated with attitude and position (SSPIAP) is a new type of optical remote sensor that can autonomously complete image positioning. Inner orientation parameters (IOPs) are a prerequisite for image position determination of an SSPIAP. The calibration of IOPs significantly influences the precision of image position determination of SSPIAPs. IOPs can be precisely measured and calibrated in a laboratory. However, they may drift to a significant degree because of vibrations during complicated launches and on-orbit functioning. Therefore, laboratory calibration methods are not suitable for on-orbit functioning. We propose an on-orbit self-calibration method for SSPIAPs. Our method is based on an auto-collimating dichroic filter combined with a micro-electro-mechanical system (MEMS) point-source focal plane. A MEMS procedure is used to manufacture a light transceiver focal plane, which integrates with point light sources and a complementary metal oxide semiconductor (CMOS) sensor. A dichroic filter is used to fabricate an auto-collimation light reflection element. The dichroic filter and the MEMS point light sources focal plane are integrated into an SSPIAP so it can perform integrated self-calibration. Experiments show that our method can achieve micrometer-level precision, which is good enough to complete real-time calibration without temporal or spatial limitations. View Full-Text
Keywords: optical orbiting payload; self-calibration; position determination optical orbiting payload; self-calibration; position determination
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Li, J.; Xing, F.; Chu, D.; Liu, Z. High-Accuracy Self-Calibration for Smart, Optical Orbiting Payloads Integrated with Attitude and Position Determination. Sensors 2016, 16, 1176.

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