• Proceedings of the Optical Society of Korea Conference
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• 2005.02a
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• pp.38-39
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• 2005

• Proceedings of the Optical Society of Korea Conference
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• 2004.07a
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• pp.236-237
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• 2004

• Proceedings of the Optical Society of Korea Conference
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• 2005.07a
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• pp.242-243
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• 2005

• Proceedings of the Optical Society of Korea Conference
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• 2006.02a
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• pp.211-212
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• 2006

• Journal of the Institute of Electronics and Information Engineers
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• v.53 no.9
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• pp.118-125
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• 2016

Rotating modulation collimator(RMC) is a remote sensing technique for a radiation source. This paper introduces an RMC system model and its image reconstruction algorithm based on Kowash's research. The reconstructed image can show the direction of a source. However, the distance to the source cannot be recovered. Moreover, the RMC image suffers from $180^{\circ}$ ambiguity. In this paper, we propose a distance estimation method using two RMCs together with a solution to the ambiguity. We also demonstrate its performance using simulated RMC data.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.31 no.10
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• pp.105-111
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• 2003

A measurement of spacecraft alignment is an important process of spacecraft assembly, integration and test. Because, it is necessary that a operator of a ground station controls the precise positions of on-orbit spacecraft by using the alignment data of attitude orbit control sensors(AOCS) on spacecraft. And, an accuracy of spacecraft alignment requirement is about $0.1^{\circ}{\sim}0.7^{\circ}$. A spacecraft alignment is measured by autocollimation of theodolite. This paper describes the measurement principle and method of spacecraft alignment. The result shows that all the AOCS on the spacecraft are aligned within the tolerance required through the alignment measurement.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2001.04a
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• pp.131-134
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• 2001

The three-dimensional precision measurement technology for industry product of middle and/or large scale has been developed. Theodolite measurement system which is one of the technology is widely used in aerospace industry. This paper describes measurement method and results for spacecraft structure test model by using the measurement system. And structural stability for STM is desribed through the comparison between design values and measured values.

• Proceedings of the Optical Society of Korea Conference
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• 2004.07a
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• pp.234-235
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• 2004

• Proceedings of the Optical Society of Korea Conference
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• 2004.02a
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• pp.198-199
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• 2004

• Proceedings of the Optical Society of Korea Conference
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• 2006.07a
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• pp.387-388
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• 2006