23. A field version of the UNAMACE, called the Automatic Photo-
mapper Equipment (APE) has been developed by GIMRADA under contract
to Bunker-Ramo Corporation, and was delivered in November 1966.
It is a ruggedized, van-mounted, mapping system capable of producing
high quality orthophotos and contours to a desired scale and intended
for rapid mapping operations by field topographic units. It will
accept similar input photography to the UNAMACE up to 10" x 10" in
size.
24. The second type of computer controlled plotter now in
existence, the AS11B/C Analytical Plotter, has its origin in a concept
of "mathematical projection," the principle of which was proposed
in 1957 by U, V. Helava, then of the National Research Council of
Ottawa, Canada. U, V, Helava conceptualized this new photogrammetric
instrument with theoretically no photogrammetric limits. It could
accommodate any two photographs that could be geometrically defined.
It could compensate for any mathematically definable systematic
error in the collection process. The initial plotters based on
this concept, the AP-1, AP-2, and AS11A, as developed by RADC under
contract with Ottico Meccanica Italiana (OMI) of Rome, Italy,
with subcontract to the Research Laboratories Division, Bendix
Corporation of Southfield, Michigan, were successive stages in the
development of an instrument designed as a first order type plotter
with the flexibility to accommodate a wide variety of input
materials. A relatively simple, highly accurate, mechanical-optical,
viewing instrument was controlled by a stored-program digital computer.
The computer was programmed to realize the maximum accuracy inherent
in the input materials by providing corrections for earth curvature,
atmospheric refraction, lens distortion, film shrinkage, and other
systematic distortions. These instruments, the first of which
was delivered in 1961, were automatic only to the extent that interior,
relative and absolute orientation were accomplished by computer assist.
25. The AS11B/C System was developed by the Bendix Corporation
under contract with RADC. Optical and mechanical components were
developed by OMI. The ASI1B was developed to enhance the output
capabilities of the basic ASI1A instrument by the addition of an
automatic image correlation system. The equipment will accomplish
the following:
a. Performs automatic contouring with coordinatograph
output.
b. Performs automatic profiling in an arbitrarily selected
direction, with coordinatograph output,
c. Assists operator during orientation by automatic parallax
and elevation measurement.
d. Records on magnetic tape terrain-surface coordinates
during contouring and profiling.
26. The AS11C provided an electronic orthophotoscope capability.
It will accomplish the following: