varuliantor dear, Rohmat Yulianto


In this paper we discuss about the skywave radiowave propagation analysis during the solar eclipse in 9th March 2016. The analysis were using the observation results that use the Automatic Link Establishment (ALE) waveform with 10.1455 MHz as a carrier frequency in Biak (01.16 N; 136.047 E)-Manado(1.52 N; 124.856 E) circuit communication. The working frequency value was based on the result of ionospheric model for Biak-Manado circuits during the solar eclipse. The observation results show a difference in the SN index values of the Link Quality Analysis (LQA) ALE data between the time when the solar eclipse occured with the day before and after. The difference variation of SN index values could be explained by the occurences of the different variation in the D layer absorption levels. The difference of an absorption are affecting the magnitude of the received signal values. The variation of absorption levels during the solar eclipse cause the SN index values have a postive linear tren with gradien value reach 1.3. This value was different compares to the day before and after which have a negative linear trend with gradien up to -13 and -9,6. The difference also shown in the distribution parameters of SN index values. During solar eclipse the mean (?)  value was 5.2384 with standard deviation (?) was 0.74894. But for the day before and after,  the ? values were 4.8316 and 4.6164 with ? were 0.92123 and 0.9096.



Makalah ini membahas tentang analisis propagasi gelombang radio mode angkasa saat terjadi peristiwa gerhana matahari pada tanggal 9 maret 2016. Analisis dilakukan berdasarkan hasil pengamatan menggunakan waveform  sistem Automatic Link Establishment (ALE) pada frekuensi 10,145 MHz untuk sirkuit komunikasi Biak-Manado. Nilai frekuensi kerja yang digunakan merujuk pada hasil perhitungan model kondisi ionosfer diwilayah sirkuit Biak (01,16 LU; 136,047 BT)-Manado(1,52 LU; 124,856 BT) pada saat gerhana matahari berlangsung. Hasil pengamatan yang diperoleh menunjukan terjadinya perbedaan variasi nilai indeks SN pada data Link Quality Analysis (LQA) sistem ALE antara saat kejadian gerhana matahari dengan hari sebelum dan sesudahnya diwaktu yang sama. Perbedaan variasi besaran nilai indeks SN tersebut dapat dijelaskan sebagai akibat adanya perbedaan perubahan tingkat absorpsi pada lapisan D ionosfer yang menyebabkan besaran sinyal yang diterima pada perangkat penerima mengalami perubahan. Perubahan tingkat absorpsi pada lapisan D saat peristiwa gerhana matahari menyebabkan nilai indeks SN memiliki tren meningkat dengan nilai gradien persamaan linear mencapai 1.3. Tren dan nilai indeks SN tersebut berbeda dengan hasil pada hari sebelum dan sesudahnya yang mencapai -13 dan -9,6. Perbedaan tersebut juga terlihat jelas dari parameter distribusi nilai indeks SN yang diperoleh. Pada saat gerhana matahari parameter nilai mean (?) sebesar 5,2384 dengan standar deviasi (?) 0,74894. Sedangkan pada hari sebelum dan sesudahnya nilai ? distribusi indeks SN mencapai 4,8316 dan 4,6164  dengan ? sebesar 0,92123 dan 0,9096. 


Propagasi Angkasa; Gerhana Matahari; Absorpsi;Skywave Propagation; Solar Eclipse; Absorption

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Brown R. R., 1964. Day-night ratio of auroral absorption for breakup events, Journal of Geophysical Research, 1964, 69, 7, 1429

Davies, K. and D. Baker M., 1966. On frequency variations of ionospherically propagated HF radio signals. Radio Science,Vol. 1, No. 5, 545{556, 1966.

Evans, J. V., 1965. An F Region Eclipse. J. Geophys. Res., 70, 131142, 1965

Goldsmith A., 2005. Wireless Communications. Chapter 3 : Statistical Multipath Channel Models. Cambridge University Press 2005. hal. 64-98, ISBN : 978-0-521-83716-3

Hess A.,M., 2000. Advanced use of LQA data in improving the quality and the speed of ALE link establishment while reducing sounding requirements in HF networks. HF Radio Systems and Techniques, 2000. Eighth International Conference on (IEE Conf. Publ. No. 474), Guildford, 2000, pp. 91-94.doi: 10.1049/cp:20000155

ITU, 2015. RECOMMENDATION ITU-R P.372-8 Radio noise. International Telecommunication Union, 2015

Jakowski, N., Stankov, S. M., Wilken, V., Borries, C., Atadill, D., Chum, J., Buresova, D., Boska, J., Sauli, P., Hruska, F., and Cander, L. R., 2008. Ionospheric behaviour over Europe during the solar eclipse of 3 October 2005, J. Atmos. Solar-Terr. Phys., 70, 836853, 2008.

Jiyo dan Admiranto G., A., 2016. Penentuan Zona Totalitas Gerhana Matahari Total 9 Maret 2016 pada Ketinggian Lapisan Ionosfer. Prosiding Workshop Cuaca Antariksa dan Peluang Pemanfaatannya-III Pusat Sains Antariksa 2016. ISSN: 2355-388X

Kumar, S, Singh, A.,K., dan Singh R.,P.,2013. Ionospheric response to total solar eclipse of 22 July 2009 in different Indian regions. Ann. Geophys., 31, 15491558, 2013. doi:10.5194/angeo-31-1549-2013.

Le, H., Liu, L., Ding, F., Ren, Z., Chen, Y., Wan, W., Ning, B., Xu, G., Wang, M., Li, G., Xiong, Bo, and Hu, L., 2010. Observations and modeling of the ionospheric behaviors over the east Asia zone during the 22 July 2009 solar eclipse. J. Geophys. Res., 115, A10313, doi:10.1029/2010JA015609, 2010.

Le, H., Liu, L., Yue, X., and Wan, W., 2008. The ionospheric responses to the 11 August 1999 solar eclipse: observations and modeling. Ann. Geophys., 26, 107116, doi: 10.5194/angeo-26-107-2008, 2008.

Lerfald M. G., Hargreaves K. J., and Watts M. J., 1965. D-Region aAbsorption at 10 and 15 Mc/s During Total Solar Eclipse of July 20, 1963. Radio SCIENCE Journal of Research NBS/USNC-URSI

Ma Bao-Ke, Guo Li-Xin, dan Su Hong-Tao, 2013. STATISTICAL CHARACTERISTICS OF THE MULTIPATH TIME DELAY AND DOPPLER SHIFT OF A RADAR WAVE PROPAGATING THROUGH THE IONOSPHERE. Progress In Electromagnetics Research, Vol. 138, 479497, 2013. ISSN: 1070-4698, E-ISSN: 1559-8985

McNamara, L.,F., 1991a. The Ionosphere: Communications, Surveillance, and Direction Finding, Chapter 4. HF Radio Propagation. Krieger Publishing Company. hal. 39-50. ISBN 0-89464-040-2.

McNamara, L.,F., 1991b. The Ionosphere: Communications, Surveillance, and Direction Finding, Chapter 6. Prediction for HF Communications. Krieger Publishing Company. hal. 75-92. ISBN 0-89464-040-2.

Mukhtarov P., Pancheva D., 1995. Model of the electron density height profile in the lowest D-region (50 to 75 km). Advances in Space Research, 1995, 15, 2, 179

Narcisi, R.S., Bailey, A.D., Wlodyka,L.E. and Philbrick C.R., 1972. Ion composition measurements in the lower ionosphere during the November 1966 and March 1970 solar eclipses. Journal of Atmospheric and Terrestrial Physics Volume 34, Issue 4, April 1972, Pages 647-658, doi:10.1016/0021-9169(72)90152-3

Wagner, L. S., Goldstein, J. A., Meyers W. D., and Bello, P. A., 1989. The HF skywave channel: measured scattering functions for midlatitude and auroral channels and estimates for short-term wideband HF Rake modem performance. Military Communications Conference, 1989. MILCOM '89. Conference Record. Bridging the Gap. Interoperability, Survivability, Security., 1989 IEEE, Boston, MA, 1989, pp. 830-839 vol.3. doi: 10.1109/MILCOM.1989.104038


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