  This paper presents a procedure to perform fully autonomous on-orbit
alignment of the interferometer on board the LISA Technology Package (LTP). LTP
comprises two free-floating test masses as inertial sensors that additionally
serve as end mirrors of a set of interferometers. From the output signals of
the interferometers, a subset has been selected to obtain alignment information
of the test masses. Based on these signals, an alignment procedure was
developed and successfully tested on the engineering model of the optical
bench. Furthermore, operation procedures for the characterization of critical
on-orbit properties of the optical metrology system (e.g. fibre noise) have
been established.
