Irkutsk, Russian Federation
Irkutsk, Russian Federation
Irkutsk, Russian Federation
When developing the first topside ionosphere sounding stations, the issue was debated concerning the improvement of the electromagnetic compatibility of such devices through the use of chirp signals. One of the main problems of using chirp signals was the impossibility of ensuring simultaneous operation of receiver and transmitter. The article presents the results of the use of receiving and transmitting dipole antennas with a common center for sounding the ionosphere by a chirp signal. Conclusions are drawn about the possibility of using such facilities for sounding the external ionosphere with the configuration with hardware separation of polarizations and in the terrestrial version with orthogonal placing of the receiving and transmitting antennas. During tests conducted on a specially designed antenna stand, we have found that the coupling coefficient of the transmitting and receiving antennas at mutual angles of 45° is no more than –10 dB, and the difference between the coupling coefficients of transmitting and receiving antennas with mutual angles of 45° and 90° is ~15 dB.
antenna coupling factor, satellite, ionosphere sounding, HF
1. Douglas S.A., Mehran M. Lenticular jointed antenna deployment anomaly and resolution onboard the Mars Express spacecraft. J. Spacecraft and Rockets. 2009, vol. 46, no. 2, pp. 403-410. DOI:https://doi.org/10.2514/1.36891.
2. Franklin C., Maclean M.A. The design of swept-frequency topside-sounders. Proc. IEEE. 1969, vol. 57, no. 6, pp. 46-82.
3. Ivanov V.A., Shumaev V.V., Kurkin V.I., Nosov V.E., Uryadov V.P. Chirp ionosonde and its application in the ionospheric research. Radiophysics and Quantum Electronics. 2003, vol. 46, no. 11, pp. 821-851. DOI:https://doi.org/10.1023/B:RAQE. 0000028576.51983.9c.
4. Jackson J.E., Warren E.S. Objectives, History, and Principal achievements of the topside sounder and ISIS project. Proc. IEEE. 1969, vol. 57, pp. 861-865.
5. Jordan R., Picardi G., Plaut J., Wheeler K., Kirchner D., Safaeinili A., et al. The Mars Express MARSIS sounder instrument. Planet. Space Sci. 2009, vol. 57, iss. 14-15, pp. 1975-1986. DOI:https://doi.org/10.1016/j.pss.2009.09.016.
6. Karpachev A.T., Zhbankov G.A. Scattered reflections and multiple traces in the range of 7-10 MHz on ionograms of the Interkosmos-19 satellite. Geomagnetism and Aeronomy. 2017, vol. 57, iss. 4, pp. 442-450. DOI:https://doi.org/10.1134/S0016793217040090.
7. Klimenko V.V., Ratovsky K., Stepanov A., Klimenko M., Karpachev A.T. Spatial features of Weddell Sea and Yakutsk Anomalies in foF2 diurnal variations during high solar activity periods: Interkosmos-19 satellite and ground-based ionosonde observations, IRI reproduction and GSM TIP model simulation. Adv. Space Res. 2015, vol. 55, iss. 8, pp. 2020-2032. DOI:https://doi.org/10.1016/j.asr.2014.12.032.
8. Mar J., Garrett T. Mechanical design and dynamics of the Alouette spacecraft. Proceedings of IEEE. 1969, vol. 57, no. 6, pp. 30-46. DOI:https://doi.org/10.1109/PROC.1969.7134.
9. Orosei R., Jordan R.L., Morgan D.D., Cartacci M., Cicchetti A., Duru F. Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS) after nine years of operation: a summary. Planet. Space Sci. 2015, vol. 11, pp. 98-114. DOI:https://doi.org/10.1016/j.pss.2014.07.010.
10. Podlesnyi A.V., Kurkin V.I., Laryunin O.A., Pezhems-kaya M.D., Chistyakova L.V. Studying travelling ionospheric disturbances from near-vertical ionosphere sounding with high temporal resolution. Proc. XXXI URSI General Assembly. Beijing, China, 2014, GP2.27. DOI:https://doi.org/10.1109/URSIGASS.2014.6929806.
11. Polekh N.M., Zolotukhina N.A., Romanova E.B., Pono-marchuk S.N., Kurkin V.I., Podlesnyi A.V. Ionospheric effects of magnetospheric and thermospheric disturbances on March 17-19, 2015. Geomagnetism and Aeronomy. 2016, vol. 56, iss. 5, pp. 557-571. DOI:https://doi.org/10.1134/S0016793216040174.
12. Pulinets S.A. Prospects of satellite sounding of the ionosphere according to Ionosonde Project. Geliogeofizicheskie issledovaniya [Heliogeophysical Res.]. 2013, vol. 6, pp. 1-7.
13. Reinisch B.W., Haines D.M., Benson R.F., Green J.L., Sales G.S., Taylor W.W.L. Radio sounding in space: magnetosphere and topside ionosphere. J. Atmos. Solar-Terr. Phys. 2001, vol. 63, iss. 2-3, pp. 87-98. DOI:https://doi.org/10.1016/S1364-6826(00)00133-4.
14. Swenson C., Pratt J., Fish C.S., Winkler C., Pilinski M., Azeem I., et al. Topside Ionospheric Sounder for CubeSats. AGU. Fall Meeting 2014: Abstracts. SA43A-4102.
