Abstract
The satellites laser ranging from Helwan SLR station during the last 20 years are discussed. The internal calibration method used at the Helwan SLR station is explained. The root mean square value of the calibrations carried out during the period from 1991 to 2008 is computed. To clarify the difference in the accuracy of the measurements, the results of the analysis of the data taken for all the satellites after the upgrading (2000) are given and compared with those of the satellites observed before the upgrading (1996). The total number of passes of the satellite observed during the period from 1991 to 2008 is presented and the results are compared with the other SLR stations.
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Appleby, G.M.: Satellite signatures in SLR observations. In: Proc. 8th International Workshop on Laser Ranging Instrumentation, Annapolis, pp. 2.1–2.14 (1992)
Cech, M., Hamal, K., Jelinkova, H., Novotny, A., Prochazka, I., Helali, Y.E., Tawadros, M.Y.: Upgrading of Helwan laser station (1997–1998). In: Proceedings of the 11th International Workshop in Laser Ranging, Deggendorf, Germany, pp. 197–200 (1998)
Hamal, K.: Calibration of the interkosmos laser radar No. 12. In: Proc. of the 3rd International Workshop on Laser Ranging Instrumentation, Lagonissi, Greece, 23–27 May 1978 , p. 198 (1978)
Ibrahim, M.: Ranging to new satellites from Helwan laser tracking station. J. Astron. Soc. Egypt 13(I), 52–66 (2005)
Ibrahim, M., Tawadros, M.Y., Helali, Y.E., El-Saftawy, M., Fahim, G., Yousry, S.H.: Results of on site data processing after upgrading of Helwan SLR station. Bull. Natl. Res. Inst. Astron. Geophys., Ser. A 51–67 (2001)
Jelinkova, H.: Mode locked train laser transmitter. In: 5th International Workshop on Laser Ranging Instrumentation, Herstmonceux, UK, p. 224, Geodetic Institute, University of Bonn, Bonn (1984)
Novotny, A., Prochazka, I.: Upgrading the computer control of the interkosmos laser ranging station in Helwan. In: 5th International Workshop on Laser Ranging Instrumentation, Herstmonceux, UK, pp. 396–400, Geodetic Institute, University of Bonn, Bonn (1984)
Otsubo, T., Amagai, J., Kunimori, H.: The center-of-mass correction of the geodetic satellite Ajisai for single-photon laser ranging. IEEE Trans. Geosci. Remote Sens. 37(4), 2011–2018 (1999)
Prochazka, I.: Mode locked semitrain laser ranging data processing software. In: Proc. of the 7th International Workshop on Laser Ranging Instrumentation, Matera, Italy, OCA/CERGA, Grasse, 2–8 October, p. 405 (1989)
Tawadros, M., Ibrahim, M., Helali, Y.E., El-Saftawy, M., Fahim, G., Yousry, S.H.: Helwan satellite laser station upgrade in 1999–2000. In: 12th International Workshop on Laser Ranging, Matera, November 2000
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Ibrahim, M. 17 years of ranging from the Helwan SLR station. Astrophys Space Sci 335, 379–387 (2011). https://doi.org/10.1007/s10509-011-0741-7
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DOI: https://doi.org/10.1007/s10509-011-0741-7