obsolete. Instead, the planning of over-all operational accomplishments
will include project requirements that can be most efficiently obtained
by ground survey parties.
It is important to note that the operational area encompassed by the
ground stations will not necessarily coincide with the visual photo area.
The trilateration net and control point photography will be acquired on a
priority basis where ground stations can be installed. Visual mapping
photo and APR will be acquired in the clear weather area regardless of
priority.
In conclusion, I can state that the sophisticated survey and mapping
system presently under development, combined with this operational concept,
will rapidly gather high quality, precise data for large scale maps.
To further substantiate the basis for this concept, I refer you to a
report on the value of 30 second vertical photography which was compiled
by the Ohio State University Research Foundation and published in May 1962.
The noted photogrammetrist, Dr. Brandenberger, states in his conclusions
that "One of the greatest advantages of vertical photography lies probably
in a very simplified procedure of determining secondary ground control." A
savings of as much as 807 o in ground control data would be realized by combining
the precise vertical photography with the electronic surveying system
(Control Point Photography). The DoD is also convinced that the new aircraft
with its unique innovations will greatly accelerate the process of map data
acquisition. It is anticipated that compilation of data acquired by this
new system will result in a significant savings in time, manpower and
dollars. Time and experience will determine the full extent of these savings.
In summary then, this new mapping concept will "jet propel" the surveyors
laborious process of data acquisition by acquiring most of the control
needed by the map maker along with the aerial photography. The precise
vertical photography will also provide a short cut to map compilation which
will elevate it to a new height of efficiency and production.