SELECTION OF 60 X 60' COORDINATE PLOTTER FOR ON-LINE CONNECTION TO THE (SANITIZED) 490 SYSTEM

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A001600020069-8
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 4
• Document Creation Date: December 28, 2016
• Document Release Date: April 19, 2000
• Sequence Number: 69
• Publication Date: April 25, 1963
• Content Type: MF

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Approved For Release 2000/06/07 ? CIA-RDP78B04?-47A001600020069-8
Tar 3EOPIT
MEMORANDUM FOR:
ATTENTION:
SUBJECT Selection of 60 x 60" Coordinate
On-line Connection to the
B & DeveloPmefl
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1. The attributes sought in a plotter for connection to the
90 stems directly from the proposed uses for such an on-line plotter.
The proposed alplicatione are two in nubber:
(1)
The preparation of plenimetric representations, over
wide range of scales, of entitiee observed on photography
being processed through the photo-measurement system.
(2) The preparation of map overlays keyed to specific mop
sheets and showing the limits or extent of photo coverage.
A third of application, not now planned but altogether
feasible, conSiate of plotting vehicle track directly
on suitably constructed maps or charts while the mission
is in progess.
On the basis of the end utilizations described above,
of your staff prepared a set of upecifications for a 60 x 60 plotter
system for use with the 490. This set of specifications was
to some degree relaxed when it became apparent that the present state
of the art did not permit attainment of all of the properties desired
in a coordinate plotter system. One of the paramount coneiderations
through the search for a plotting system was maximum reliability.
This high reliability requirement stems from two factors:
(1)
Even thongh the output to the plotter in spplIc5tiofl is one
that is called by the real-time program the application
is best described as quasi real-time. The response
time must be rapid and for this to be the case, extreme
reliability is essential.
DECLASSIFICATION REVIEW BY NIMA / DoD
GROUP 1
Excluded from automo,'
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T plotter ubou4 require oaly occuional checks by the
eomput r system operator (eseentially, it should be capable
of ended operation).
3. The design of any plotter eystem calls for some compromise
ion to the problem of speed versus plotting accuracy. The original
fication called for speed that WAS the lowest possible consistethe nt
petential use of the plotter for producing coverage plots of
orb al missions at jet navigations scales. The accuracy called for in
the original specifications was judged necessary to satisfy any potential
Applications that might arise within the Technical Analesis Branch that
would require scribing onto stable base materials. he it became ap-
parent that 40 manufacturer would be able to meet both of these requirement
simultaneously, it was decided that TAB high precision plotting requirements
would be handled by some future off-line plotting device in 'which speed
1144 not an essential conaideration. Coaseqeently, the accuracy requirement
was relaxed and the various manufacturers that had been contacted were noti-
accordingly and asked to restudy and amend their proposals. Mr.
ted proposals to three manufacturers:
e seems to be no doubt that has the but record to date
ion of analog plotting equipment, it seems that the analog
ter that they proposed still offered considerable risks from the
ability view point. On this bis the proposal was dropped from 25X1A
nuttier co tion. The two remaining proposals (specifically,
have placed us in the rare position of having to decide
between two Anizations very evenly matched in capabilities. Messrs.
had lengthy discussions with both grows on the details of
heir proposa and were most favorably impressed by both organizations.
There exists little doubt that either can meet the objectivee laid out in
the revised epecifications. It should be noted at this point that the
table forPlotter would be manufactured by
contract fromthe wee is, indeed, leentical to the one in the IIIII, sub"
proposal. In this circumstance the question then becomes one of 25X1A
the cepabilities of both groups in circuit and servo designs. It is our
feeling that the group leads to somewhat more conservative,
and hence possible more reliable circuit design than does the group.
Additionally there is a certain possible advantage to be gained by having
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theomplete me.nutacture and assembly of the y tem iu the taadsof one
manufacturer.On t4e basis, it is our recommendation that the roposal
submitted by and subsequently amended to conform to the
relaxed accuracy requirement be accepted and that action be taken to
initial this contract.
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Chief, Technical Intelligence Division
Distribution:
Copies 1 & 2 . Assistant for Plans & Development
3 - Chief, TID
4 TTD Mar=
5 . Chief, TID/C11
NPIOTID/01111111111111
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d For Release nowop
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