An existing analysis technique for separation of incident and reflected wave trains is extended towards a 2DH formulation, for constant depth. Combined with a phase-averaged technique (MLM), a phase resolving analysis of multidirectional wave trains is performed. The ability of the algorithm to separate directional components in a short-crested sea is tested against a numerical simulation and a laboratory observation of a short-crested wave field. The investigations show, that the directionality of a short-crested wave train can succesfully be approximated in a phase resolving manner, by a superposition of multiple long-crested waves, propagating in various (main) directions.