ORION mobile unit design

The ORION (Operational Radio Interferometry Observing Network) mobile system is being implemented in support of the NASA Crustal Dynamics Project (Ref. 1). Its purpose is to provide a means for measurement of lengths and orientation of vectors between sites located in areas of geophysical interest. This is accomplished by using Very Long Baseline Interferometry (VLBI) techniques operating at microwave frequencies using extragalactic radio sources (quasars).