DEAR JOHN:

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B05171A000500020027-4
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 5
• Document Creation Date: December 28, 2016
• Document Release Date: September 21, 2005
• Sequence Number: 27
• Publication Date: May 15, 1970
• Content Type: LETTER

Approved For Release 2005/11/21 : CIA-RDP78BO5171A000500020027-4
May 15, 1970
Enclosed for your files are three (3) copies of Activity
Summary, =2201021-AS-4 and one (1) copy of Program Plan
dated 12 May 1970.
PSC/c
Declassification Review by NGA/DoD
STAT
STAT
Approved For Release 2005/11/21 : CIA-RDP78BO5171A000500020027-4
 Approved For Release 2005/11/21 : CIA-RDP78BO5171A000500020027-4
May 14, 1970
To:
From:
Subject:
Contract Visit to Customer Facility
11, 12,.13 May 1970
STAT
STAT
This is a summary of the activity performed at the
STAT
May 11 - 13 by ersonnel. The STAT
specific details and accomplishments for this trip are contained
in the laboratory notebook
conducted by
2201201-LN#1. This trip was
on 11,12 May and 1 :1 on 12,13 May.
During these three days the primary activities included
laboratory and lecture efforts. The laboratory effort was
directed to refinement of holographic filter fabrication procedures
and to optimization of detection filtering output on the coherent
processor. A series of tests were conducted demonstrating the
improvements that were gained during this period of time. Present
status is to test out the detected response as a function of
the ratio of amplitude of the reference beam and Fourier transform
beam in the interferometer. The best refinement is that procedure
that will give the optimum detected signal. Care will have to
be taken to maintain a clean optical system to preclude noise,
and to set the detected output at proper focus for maximum
detection signal.
STAT
Approved For Release 2005/11/21 : CIA-RDP78BO5171A000500020027-4
 STAT
Approved For Release 2005/11/21 : CIA-RDP78B05171A000500020027-4
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The application of the holographic system to detection
filtering will contribute to image processing activity in
general. The interferometer provides a means for fabricating
Fourier transform filters that can be used in image restoration
as well as target detection. We therefore intend to emphasize
target detection processes up to the point that the technique
is fully demonstrable, and then to apply the technology to
demonstrate its utility in the image restoration field.
One point that should be emphasized is the immediate need
of a well operating laser for the coherent detection system
as well as the need for pinholes, especially one of 10 pm
diameter. These two items should be available for present
work. Other requirements include components for high resolution
operation of the interferometer and coherent processor.
The lecture was presented on the afternoon of 11 May, and
included an analysis of optical components and their Fourier
transformation capability. We will be analyzing the impact
of each component of the system on the detected response, and
include analytical capability for application of analysis
to other similar systems.
Enclosed with this activity summary is the Program Plan,
dated 12 May 1970, generated to direct laboratory activity
during the interim period between visits. Two copies
were left at the laboratory on 13 May. The next trip is
scheduled for 19, 20 May 1970 by
Two texts were delivered under thir program, they are
Principles of Holography
Howard M. Smith
John Wiley-Interscience, 1969
The Fourier Integral and Its Applications
Athanasios Papoulis
McGraw-Hill Book Company 1962
PSC/c
Attachment
STAT
STAT
Approved For Releasd 2005/11/21 : CIA-RDP78B051'1A000500020027-4 STAT
 Approved For Release 2005/11/21 : CIA-RDP78BO5171A000500020027-4
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Approved For Release 2005/11/21 : CIA-RDP78BO5171A000500020027-4