Optomechanical Design of a Compact Imaging Spectrometer for a Microsatellite STSAT3

Jun-Ho Lee; Chi-Weon Lee; Yong-Min Kim; Jae-Wook Kim

Abstract

A compact imaging spectrometer (COMIS) is currently under development for use in the STSAT3 microsatellite. COMIS images the Earth's surface and atmosphere with ground sampling distances of <TEX>${\sim}30m$</TEX> in the <TEX>$18{\sim}62$</TEX> spectral bands (<TEX>$4.0{\sim}1.05{\mu}m$</TEX>) for the nadir looking at an altitude of 700 km. COMIS has an imaging telescope and an imaging spectrometer box into which three electronics PCBs are embedded. These are designed into a single assembly with dimensions of 35(L) <TEX>$\times$</TEX> 20(W) <TEX>$\times$</TEX> 12(H) <TEX>$cm^3$</TEX> and a mass of 4.3 kg. Optomechanical design efforts are focused on manufacturing ease, alignment, assembly, testing and improved robustness in space environments. Finite element analysis demonstrates that COMIS will survive in launch and space environments and perform the system modulation transfer function (MTF) in excess of 0.29 at the Nyquist frequency of the CCD detector (38.5 lines-per-mm).

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S. H. Lee, J. O. Park, S. W. Rhee, N. H. Myung, D. G. Lee, J. T. Lee, H. C. Bang, G. W. Moon, W. H. Choi, H. S. Kim, G. B. Chung, H. Han, J. H. Park, and J. H. Lee, "STSAT-3 satellite system," in Proc. the 2008 KSAS Spring Conference (Pyungchang, Korea, Apr. 2008), pp. 1093-1096
J. H. Lee, C. W. Lee, K. I. Kang, T. S. Jang, H. S. Yang, W. Han, J. O. Park, and S. W. Rhee, "A compact imaging spectrometer (COMIS) for the microsatellite STSAT3," Proc. SPIE 6744, 67551C1-8 (2007)
[Crossref]
J. H. Lee, T. S. Jang, H.-S. Yang, and S.-W. Rhee, "Optical design of a compact imaging spectrometer for STSAT3," J. Opt. Soc. Korea 12, 262-268 (2008)
[Crossref]
J. H. Lee, Y. M. Kim, J. S. Kim, and Y.-E. Yoo, "Bare wafer inspection using a knife-edge test," J. Opt. Soc. Korea 11, 173-176 (2007)
[Crossref]
A. Ahmad, Optomechanical Engineering Handbook (CRC Press LLC, Florida, USA, 1999), Chapter 3
P. Yoder, Opto-mechanical Systems Design (Marcel Dekker, Inc., New York, USA, 1992), Chapter 3
H.-G. Grothues, F. Lehmann, and H. Michaelis, "A compact very high resolution camera (VHRC) for earth and planetary exploration using a large array (7k <TEX>$\times$</TEX> 8k) CCD," Acta Astronautica 45, 577-584 (1999)
[Crossref]
B. Capdepuy, F. Leleu, F. Boursereau, P. Parrot, B. Bailly, J. B. Riti, and J. L. Cornu, "Space optical payloads, new application area for high temperature composites," Acata Astronautica 41, 825-831 (1997)
[Crossref]
I.-S. Yuk, H. Jin, S. Lee, Y. S. Park, D. H. Lee, U. W. Nam, J. H. Park, W. Y. Han, and J. W. Lee, "Preliminary optical design of MIRIS, main payload of STSAT-3," Publications of the Korean Astronomical Society 22, 201-209 (2007)
H.-K. Cho, J.-K. Seo, N.-H. Myung, "Modal analysis for the development of composite structure of STSAT-3," Publication of Korea Society of Aero and Space 36, 1201- 1206 (2008)
www.ansys.com
D. Mugnier, ASAP 5 Users Manual (Arianespace, France, 2000)
P. R. K. Chetty, Satellite Technology and Its Applications (Mcgraw-Hill, USA, 1991)
D. G. Gilmore, Satellite Thermal Control Handbook (Aerospace Corporation Press, USA, 1994)
J.-K. Seo, "STSAT-3 preliminary design review: spacecraft bus," STSAT-3 PDR meeting (2008)

2008 (4)

J. H. Lee, T. S. Jang, H.-S. Yang, and S.-W. Rhee, "Optical design of a compact imaging spectrometer for STSAT3," J. Opt. Soc. Korea 12, 262-268 (2008)
[Crossref]

S. H. Lee, J. O. Park, S. W. Rhee, N. H. Myung, D. G. Lee, J. T. Lee, H. C. Bang, G. W. Moon, W. H. Choi, H. S. Kim, G. B. Chung, H. Han, J. H. Park, and J. H. Lee, "STSAT-3 satellite system," in Proc. the 2008 KSAS Spring Conference (Pyungchang, Korea, Apr. 2008), pp. 1093-1096

H.-K. Cho, J.-K. Seo, N.-H. Myung, "Modal analysis for the development of composite structure of STSAT-3," Publication of Korea Society of Aero and Space 36, 1201- 1206 (2008)

J.-K. Seo, "STSAT-3 preliminary design review: spacecraft bus," STSAT-3 PDR meeting (2008)

2007 (3)

I.-S. Yuk, H. Jin, S. Lee, Y. S. Park, D. H. Lee, U. W. Nam, J. H. Park, W. Y. Han, and J. W. Lee, "Preliminary optical design of MIRIS, main payload of STSAT-3," Publications of the Korean Astronomical Society 22, 201-209 (2007)

J. H. Lee, C. W. Lee, K. I. Kang, T. S. Jang, H. S. Yang, W. Han, J. O. Park, and S. W. Rhee, "A compact imaging spectrometer (COMIS) for the microsatellite STSAT3," Proc. SPIE 6744, 67551C1-8 (2007)
[Crossref]

J. H. Lee, Y. M. Kim, J. S. Kim, and Y.-E. Yoo, "Bare wafer inspection using a knife-edge test," J. Opt. Soc. Korea 11, 173-176 (2007)
[Crossref]

2000 (1)

D. Mugnier, ASAP 5 Users Manual (Arianespace, France, 2000)

1999 (2)

A. Ahmad, Optomechanical Engineering Handbook (CRC Press LLC, Florida, USA, 1999), Chapter 3

H.-G. Grothues, F. Lehmann, and H. Michaelis, "A compact very high resolution camera (VHRC) for earth and planetary exploration using a large array (7k <TEX>$\times$</TEX> 8k) CCD," Acta Astronautica 45, 577-584 (1999)
[Crossref]

1997 (1)

B. Capdepuy, F. Leleu, F. Boursereau, P. Parrot, B. Bailly, J. B. Riti, and J. L. Cornu, "Space optical payloads, new application area for high temperature composites," Acata Astronautica 41, 825-831 (1997)
[Crossref]

1994 (1)

D. G. Gilmore, Satellite Thermal Control Handbook (Aerospace Corporation Press, USA, 1994)

1992 (1)

P. Yoder, Opto-mechanical Systems Design (Marcel Dekker, Inc., New York, USA, 1992), Chapter 3

1991 (1)

P. R. K. Chetty, Satellite Technology and Its Applications (Mcgraw-Hill, USA, 1991)

Acta Astronautica (2)