Some programs conduct their system tesing at remote locations that dont have the facilities to support fixed or Portable Control Stations, hence the Mobile Control Stations

These Stations typically provide some sort of shelter to the operator and have greater power, data and cooling interfaces as compaed to the Portable Systems.

Ground Control Trailer

Flight Line Trailer housing Sensor Control System along with enhanced video displays and internal equipment and external cooling capability. The system contains a line of sight Data Link System for communication to the test aircraft.
Compact Control Station (small enough to fit in a small SUV)