F-region electron density and Te / Ti measurements using incoherent scatter power data collected at ALTAIR

• Autores: Milla, Marco, Kudeki, Erhan
• Formato: artículo
• Fecha de Publicación: 2006
• Institución: Instituto Geofísico del Perú
• Repositorio: IGP-Institucional
• Lenguaje: inglés
• OAI Identifier: oai:repositorio.igp.gob.pe:20.500.12816/1900
• Enlace del recurso: http://hdl.handle.net/20.500.12816/1900; https://doi.org/10.5194/angeo-24-1333-2006
• Nivel de acceso: acceso abierto
• Materia: Incoherent Scattering Radar; F Region; Ionospheric Electron Density; Radar Antennas; Transmitting Antennas; http://purl.org/pe-repo/ocde/ford#1.05.01

The ALTAIR UHF radar was used in an incoherent scatter experiment to observe the low-latitude ionosphere during the Equis 2 rocket campaign. The measurements provided the first high-resolution electron density maps of the low-latitude D- and E-region in the Pacific sector and also extended into the F-region and topside ionosphere. Although the sampling frequency was well below the Nyquist frequency of F-region returns, we were able to estimate Te/Ti ratio and infer unbiased electron density estimates using a regularized inversion technique described here. The technique exploits magnetic aspect angle dependence of ISR cross-section for Te>Ti.