High Resolution 1:10,000 scale Mapping Strategy of Multi ... - NDMA

may be cause for rejection. However, consideration shall be given if, in
the case of a stereoscopic pair, endlap exceeding sixty-eight percent
(68%) was found to be unavoidable in areas of low elevation in order to
attain the fifty-five percent (55%) minimum endlap in adjacent areas of
higher elevation.
3. Sidelap: Sidelap shall average thirty percent (30%), plus or minus ten
percent (10%). Any negative having sidelap less than fifteen (15%) or
greater than fifty percent (50%) may be rejected. However, consideration
shall be given if the strip area to be mapped is found to be slightly wider
than the area which can be covered in one flight strip. In that case,
sidelap of up to seventy percent (70%) to take advantage of control is
permissible.
QUALITY OF PHOTOGRAPHY
Photography shall be executed so as to minimize image movement at the
moment of exposure. Such exposure and the subsequent processing shall be
such that all negatives shall be of high quality showing all specified planimetric
and topographic features at stipulated scale
Negatives should be clear and sharp in detail and in average contrast and
without static marks, stains and other blemishes.
SCALE OF NEGATIVES
The flight height above the average ground elevation or set datum shall be such
that the negatives will yield photographic prints on paper or on dimensionally
stable polyester-type plastic or on optically flat glass plates to the scale
specified. Negatives departing from the intended scale by more than five percent
(5%) shall be rejected.
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