Plasma Waves and Sounder (PWS) experiment onboard the Planet-B Mars orbiter
Tóm tắt
For the purpose of observing the Martian ionosphere under the condition of direct interaction with the solar wind by using a RF sounder together with a plasma density probe and high frequency plasma wave detectors, the Plasma Waves and Sounder (PWS) system onboard the Planet-B Mars orbiter has been developed through a proto-model (PM) which are followed by achievement of a flight-model (FM) for the Planet-B mission. The operation of the achieved system has been tested for function and stability in a simulated space environment. The PWS system is equipped with two sets of long deployable dipole antennas with a tip-to-tip length of 52 m. The high power (600 Watts) transmitter of the sounder experiment makes it possible to measure the electron density profiles of the Martian topside ionosphere in an altitude range from 300 to 3000 km in a density range from 102 to 106/cc with a time resolution of 25 µsec corresponding to a range resolution of 3.75 km. Observations of natural plasma waves and planetary radio waves in the frequency range from 20 kHz to 5 MHz are planned in the passive mode operation of the PWS system, identifying all the polarization characteristics together; observations of natural plasma waves caused by the direct interaction of the Martian ionosphere with the solar wind plasma are also a major purpose of the PWS experiment. For these purposes, a wide dynamic range and high sensitivity characteristics of the PWS receiver have been achieved. As the extended function of the PWS plasma sounder instrument, altitude measurement also will be carried out.
Tài liệu tham khảo
Breus, T. K., A. M. Krymskii, R. Lundin, E. M. Dubinin, Ye. G. Yereshenko, S. V. Barabash, V. Ya. Mitnitskii, N. F. Pissarenko, and V. A. Styashkin, The solar wind interaction with Mars: Consideration of PHOBOS 2 mission observation of an ion composition boundary on the dayside, J. Geophys. Res., 96, A7, 11165–11174, 1991.
Florida, C. D., The development of a series of ionospheric satellite, Proc. IEEE, 57, 867–875, 1969.
Franklin, C. A. and M. A. Maclean, The design of swept-frequency topside sounders, Proc. IEEE, 57, 897–944, 1969.
Gurnett, D. A., Solar system plasma waves, Radio Sci. Bulletin, 274, 4–13, 1995.
Jackson, J. E., The reduction of topside ionograms to electron density profiles, Proc. IEEE, 57, 960–976, 1969.
Johnson, F. S. and W. B. Hanson, Viking 1 electron observation at Mars, J. Geophys. Res., 96, A7, 11097–11108, 1991.
Kaiser, M. L., Observation of non-thermal radiation from planets, in Plasma Waves and Instabilities at Comets and in Magnetosphere, edited by B. T. Tsurutani and H. Oya, AGU Geophysical Monograph 53, 221–237, 1989.
Mar, J. and T. Garrett, Mechanical design and dynamics of the Alouette spacecraft, Proc. IEEE, 57, 882–896, 1969.
Obara, T. and H. Oya, Plasma condition in the polar ionosphere in SPW experiments of PPS system on board the Ohzora (EXOS-C) satellite, J. Geomag. Geoelectr., 37, 285–307, 1985.
Oya, H. and T. Ono, Stimulation of plasma waves in the magnetosphere using JIKIKEN (EXOS-B) satellite, Part II: Plasma density across the plasmapause, J. Geomag. Geoelectr., 39, 591–607, 1987.
Oya, H. and T. Ono, A new altimeter for mars land shape observation utilizing the ionospheric sounder system onboard the Planet-B spacecraft, Earth Planets Space, 50, this issue, 229–234, 1998.
Oya, H., T. Ono, and T. Kamada, Stimulation of plasma waves in the magnetosphere using satellite JIKIKEN (EXOS-B), Part-I: Observation of plasma resonances, J. Geomag. Geoelectr., 33, 3–25, 1981.
Oya, H., A. Morioka, and T. Obara, Leaked AKR and terrestrial hectometric radiations discovered by the plasma wave and planetary plasma sounder experiments on board the Ohzora (EXOS-C) satellite—Instrumentation and observation results of plasma wave phenomena, J. Geomag. Geoelectr., 37, 237–262, 1985.
Oya, H., A. Morioka, K. Kobayashi, M. Iizima, T. Ono, H. Miyaoka, T. Okada, and T. Obara, Plasma wave observations and sounder experiments (PWS) on board Akebono (EXOS-D) satellite, J. Geomag. Geoelectr., 42, 411–442, 1990.
Russell, S., II and F. C. Zimmer, Development of the fixed frequency topside-sounder satellite, Proc. IEEE, 57, 876–881, 1969.
Slavin, J. A., K. Schwingenschuh, W. Riedler, and Ye. Yeroshenko, The solar wind interaction with Mars: Mariner 4, Mars 2, Mars 3, Mars 5, and Phobos 2 observations of bow shock position and shape, J. Geophys. Res., 96, A7, 11235–11241, 1991.
Trotigonen, J. G., R. Grard, and S. Savin, Plasma wave system measurements of the Martian bow shock from the Phobos 2 spacecraft, J. Geophys. Res., 96, A7, 11253–11264, 1991.
Zhang, T. L., J. G. Luhmann, and C. T. Russell, The magnetic barrier at Venus, J. Geophys. Res., 96, 11145–11153, 1991.