Six different subjects completed each of the three formats three times for a total of 18 tests per format. The basic 3-D display allowed the user to rotate the field of view so that closely spaced targets could be engaged. It showed promise, for certain users, of improvement over the basic 3-D format. The apparent advantage of augmenting the 3-D format using the vertical bars is still undetermined. Testing the three formats in different order might show interesting results but was not investigated here.
Further testing is required to determine the benefit of the integrated vertical bars.
The contracting agency is U.S. Army Space and Strategic Defense Command, Huntsville, Alabama.