SECOND LETTER REPORT ON EVALUATION (16 DECEMBER 1965 TO 13 JANUARY 1966)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A002900030016-1
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: December 28, 2016
• Document Release Date: June 19, 2002
• Sequence Number: 16
• Publication Date: January 13, 1966
• Content Type: REPORT

c 7c? t` i oD cumvnt Consists of Pages.
Approved For R (ease 2002/07/10 : CIA-RDP78B0474?,AAV6'Q0 300 6-1 of~ Copies.
SECOND LETTER REPORT ON EVALUATION
'(16 December 1965 to 13 January 1966)
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13 January 1966
DECLASS REVIEW by NIMA/DOD
ptit ipoptglits to oruiatton at`4 E4xng
ona l def of T United States witl i*' the
the
leaning of the Eeoionsge Laws, Title 18,
ctions and dco794. Its ntenta nanarinyesmanner the 90v,
.lation of of
is Drohibi.ted by laW.
anauthoriaed person
ExchidC'.?", f,-,, . ^..I~ dcwngraading
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Second Letter Report on Evaluation (U)
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I. Work for Reporting Period
The work during the past month can be broken down into two problem
areas. In the first, the construction of the cadmium sulfide detector unit and
associated circuitry has continued. This will be used to measure directly the
degree of coherence in the object plane by measuring the visibility of the fringes
in the suitable interference experimelit. The second problem is a theoretical
analysis of the appropriate input targets and techniques for evaluation. Re-
cently completed calculations of the partially coherent images of sinusoidal
objects and edge objects are available and the applicability of using these to
measure the degree of coherence is being investigated.
II. Work for Next Period
Efforts will be directed toward completing construction of the double slit
interferometer and toward calculating and measuring the degree of coherence
in the object plane for both the Na-arc and the He-No laser sources. We will
begin to evaluate the images of low contrast edges since these will be linear in
intensity even for coherent illumination.
III. Visits to Contractor
During the reporting period no visits were made to the contractor.
IV. Changes in Personnel
The following personnel have been added to the contract staff:
This documetst contains information nffeatini'
the national defense of The United States within the
nning of the EsD'orage Laws, "_le 18, U. S.
.iors 79' and '794. Its transmission or the rev.
on of its contents in any manner to an
iautaoriZed person is prohibited by law.
SECRE t'
Approved For Release 2002/07/10 : CIA-RDP78BO4747AO02900030016-1