REQUIREMENTS FOR APPLICATION OF THERMOPLASTIC RECORDING TECHNIQUES

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03330A004200030001-7
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 4
• Document Creation Date: December 23, 2016
• Document Release Date: April 7, 2014
• Sequence Number: 1
• Publication Date: December 19, 1958
• Content Type: MEMO

Declassified in Part - Sanitized Copy Approved for Release 2014/04/07: CIA-RDP78-03330A004200030001-7
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Declassified in Part - Sanitized Copy Approved for Release 2014/04/07 : CIA-RDP78-03330A004200030001-7
Declassified in Part - Sanitized Copy Approved for Release 2014/04/07: CIA-RDP78-03330A004200030001-7
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REWIREMENTS
WIDE FREWENCY BAND RECORDINGS
THERMOPLASTIC TECHNIWES
1. The following selected requirements support development and
production of vide frequency band recording systems:
a. 'There is a critical need for a recording technique
which will permit direct recording of signal parameters
obtained through high gain Aperiodic band pass receivers.
b. Present wide band recording techniques capable of
recording signals such as telemetry, etc., are complicated
by the complex systems required to control the recorder, to
provide logging information and the need for data reduction
of the recording, and the time factors and delay incident
to analysis and transforming of the magnetic recording into
useful data.
c. Principles of thermoplastic recording as demonstrated
by the General Electric CoMpany, indicate that the thermoplastic
system, having frequency response estimated AO high as 500 me/s,
would if reduced to practice allow for design and construction
of an intercept receiver/recorder which would simplify time
consuming techniques now employed in the recording, data reduction
and analysis of electronic intercepts. This appears true because
thermoplastic recording preserves and can present data in a form
which is analizable directly.
e. In/the/field ...
Declassified in Part - Sanitized Copy Approved for Release 2014/04/07: CIA-RDP78-03330A004200030001-7
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3. The General Electric Company has stated that the thermoplastic record-
ing technique is applicable to the side looking mapping type radar and that it
holds promise for improved resolution in that system. Based on this claim, it
is clear that there is a specific requirement for utilization of such recorder
so designed as to allow its incorporation in existing side looking radar
systems.
COMMENT: From the demonstration/lecture notes and discussion, it appears that
there would be no factor prohibiting a fairly high degree of miniaturization of
the system as proposed by General Electric.
6.
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-- Declassified in Part - Sanitized Copy Approved for Release 2014/04/07: CIA-RDP78-03330A004200030001-7
Declassified in Part- Sanitized Copy Approved forRelease2014/04/07 : CIA-RDP78-03330A004200030001-7
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6. has advised the undersigned that the Technical 50X1
Services Staff (LOP) is interested in the application of such recorder
techniques to:
a. An improved audio intercept, i.e., intelligibility
of recordings taken under a variety of conditions bears a
direct relationship to the band pass that can be used in
such recordings.
b. The side looking radar systems mentioned above and,;
c. the possibility that this recording technique may be,
applicable to some photographic problems and requirements handled
by TBS.
DATE: 1 Dec 58
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Declassified in Part - Sanitized Copy Approved for Release 2014/04/07: CIA-RDP78-03330A004200030001-7