ADDITIONS AND MODIFICATIONS TO RESEARCH AND DEVELOPMENT REQUIREMENTS FOR MAPPING, C

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP79B01709A000500030009-6
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 4
• Document Creation Date: December 16, 2016
• Document Release Date: October 25, 2004
• Sequence Number: 9
• Publication Date: January 26, 1966
• Content Type: MF

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(26 January 1966)
MEMORANDUM TO
SUBJECT: Additions and Modifications to Research and Development
Requirements for
for Mapping, Charting and Geodesy
1. In accordance with the COMOR MC&G Working Group meeting of
17 January 1966, subsequent paragraphs set forth DoD additions and
modifications to the document titled as above dated 16 December 1965,
as follows:
a. Brief explanations of the basis for the accuracy
requirements stated in paragraphs 3a, b and c, as requested by the
Chairman, COMOR MC&G Working Group and
b. Minor substantive modifications posed by the DoD, based
on most recent experiences within the DoD.
2. 'The following subparagraphs set forth the basis for the accuracy
requirements stated in 3a, b and c of the document cited in paragraph 1
above:
a. The Military Topographic Mapping Requirements (para 3a)
at large scale are based upon the effective employment of tube artillery.
The stated accuracies are designed to be commensurate with the precision
of cannon delivery capability in order to subject targets to effective lethal
fire with the initial salvo directed against them. In the event that degraded
map accuracies preclude the successful delivery of the first salvo on target,
then, by the time the second or third salvo is "bracketted in", the enemy
has been afforded time to take evasive action, thus significantly reducing
the lethality of all but the first salvo.
b. The Military Topographic Mapping Requirements (3a) at
medium scale, are based on the most effective use possible of tube
artillery when large scale maps are not available. These maps have many
other extensive uses, none of which are as demanding as its role as a
substitute for the large scale maps.
DIA review(s) completed.
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c. The accuracy relationship between widely separated points
up to 500 miles, as shown on topographic maps, both medium and large
scale (see accuracy requirement for photogrammetric control points in
paragraph 3c of reference document), is dependent on the launch-target
relationships necessary for Army tactical missiles (Sergeant, Corporal)
up to the range of the Pershing missile.
d. The requirements for Aeronautical Chart (para 3b) vertical
accuracies are based on the need to know the shape of the terrain for
radar predictions necessary for the manned, all-weather, low level
penetration of tactical and strategic aircraft. The accuracies relate to
radar shadowing and masking effects over the radar range of low flying
aircraft.
3. The following subparagraphs set forth substantive modifications to
the document cited in paragraph 1 above recommended by the DoD based
on most recent experiences:
a. Paragraph 3d should be revised to include requirements
for higher resolution as follows: "Satellite photography should permit
interpretation of those features normally required to be shown on maps
and charts. These features are detailed in mapping and charting
specifications, and available studies. The most critical requirement
pertains to features on large scale maps for infantry and artillery use,
and specifically those large scale maps which include the combination
of cartographic and photographic detail to express features in a complete
.and precise manner. Generally, the required interpretation capability is
reached by a resolution of 5 feet on the ground, including round and
square objects for those features represented by 2-1 contrast level on
the film, developed to a density of .3 minimum to 1. 6 maximum. "
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b.. In line with subparagraph a above, and recent studies on
details interpretable from KH-4 photography, paragraph 4d, Information
Content, should be revised as follows: "Analysis of the KH-4 system
panoramic photograph at 100-150 nautical miles, reveals that the
information content requirements in terms of ground resolution obtainable
for medium and large scale maps and charts is approximately
This resolution satisfies most mapping and charting requirements except
for certain details at large scale, and especially details shown both in
cartographic and photographic form on maps validated for use in field
operations such as Viet Nam. Generally, medium and small scale maps
require less stringent detail interpretation capability, such that most of
the cartographic features are interpretable from photography having a
resolution ofi on the ground, which could be obtained by
present KH-4 systems operating at the altitude of 200-300 nautical miles.
However, photography at these higher altitudes would not be adequate for
interpretation of 20 to 25% of the features on medium scale topographic
maps, would be only marginal for medium scale target charts and, of
course, would not meet the interpretation requirements for large scale
mapping. "
d. Paragraph 7a, Improved Frame Camera, should be revised
as follows: "The 3-inch focal length S]: camera, in the KH-4 or similar
stereo panoramic system, should be replaced with a longer focal length
frame camera. Substitution of a 6 or 8-inch index camera has been
suggested as the next logical step in the evolutionary improvement of
acquisition system capabilities, particularly as pertains to the KH-4
system. If flown in the proper orbital mode and altitude, this component
development will provide an acquisition system capable of meeting all
medium scale map and chart accuracy requirements, and nearly satisfy
positioning requirements for the immediate future. However, in view of
large scale accuracy requirements which would not be fulfilled, and any
I
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possible changes to longer focal length, higher resolution stereo
panoramic photography for intelligence requirements, consideration
should be given to a still longer focal length for the index camera.
4. A copy of this memorandum .has been furnished to the Military
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FOR THE DIRECTOR:
/S/
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DIA Member
COMOR MC&G Working Group
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