[IEEE IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium - Sydney, NSW, Australia (9-13 July 2001)] IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217) - Methods for investigating the spectrum characteristics of emission for the plasma flows of artificial origin injected in the ionosphere of Earth