Cassini direction-finding and an application to Saturn drifting bursts

The first part of this study is a review of the basic direction-finding equations on a three-axis stabilized spacecraft, followed by outlining a solution by direct inversion. In the second part, we present first results of direction-finding when applied to Saturn Drifting Burst (SDB) emissions as observed by the Cassini spacecraft at Saturn. This confirms that SDBs have their source locations inside the Enceladus plasma torus, which favors linear or nonlinear mode conversion as a possible generation mechanism, similar to Saturn’s narrowband emissions which often occur within the same frequency range.