Abstract
The main propose of this Project is study the thermosphere-ionosphere system at equatorial, low-latitude and beyond EIA crest regions during the descending phase of solar cycle 24 (2015, 2016, and 2017). In order to study this research topic will be used 4 ionosondes, the IBGE-GPS network, 3 all-sky imaging systems. The following topics will be study: a)The objective is study the Travelin…