AUTOMATIC STEREO COMPARATOR

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B05171A000100020044-9
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: December 28, 2016
• Document Release Date: April 18, 2003
• Sequence Number: 44
• Publication Date: September 26, 1968
• Content Type: MFR

Ile IM
Approved For Release 2@G 105114: CIA-RDP78BO5171A000100020044-9
PSG/AID-321/68
26 September 1968
SUBJECT: Automatic Stereo Comparator
1. On 25 September I met with TSSG and
to
!cuss tie stereo comparator under development by tha company.
2. Among the subjects discussed was the teletype usage between
516 and UNIVAC 494. The teletype in this system will be
used or parametric input into thel 516 computer and then
will be switched on-line to the UN IVAC 494. It will be the operator's
responsibility to insure that this teletype is on-line to the 494
when data is to be sent to the remote station from the central pro-
cessor. This does not seem to be a major problem.
3. Also discussed was the fact that the DDP 516 must be pro-
grammed for each camera system for which it is to be used. The
programs are camera system dependent. Iis presently programming
the instrument for the KH-4 system A
FORTRAN compiler is available for this purpose. This pro em has
been ignored to date.
4. A major drawback to the present hardware configuration is
that there! is no device which can be conveniently used to load pro-
grams into the 516. The programs will be punched on paper tape and
will be quite lengthy. is recommending the financing of a high-
speed paper tape reader punch for the system. This appears to be
desirable.,
5. Because I felt it would aid the "personnel in their design
of the machine, I briefed them on the manner in which we will use the
device. This description is as follows:
a. The 494 will accept the coordinates of conjugate imagery
on-line and construct a drum-based file of this information.
b. Upon termination of operations on a frame, the Real-Time
Mensuration Program will initiate a load request for a stereo
program.
c. The stereo program will operate at the batch level of the
494 using the drum-based file as input and will send answers
out to the remote device.
25X1
25X1
25X1
25X1
25X1
A r v F ase 2003/05/14 CIA-RDP78BO5171A000100020044-9
Declass Review by M~/
 Approved For Release 2003/05SECQFFRDP78B05171A000100020044-9
SUBJECT: Automatic Stereo Comparator,
The system will not be on-line in the manner of the present system but
will have a response time on the order of five minutes. This appears
to be acceptable to PHD.
6. Summarizing our work load and anticipated problems in regard
to this project, it appears that the work load is minimal (under 80
man-hours) to link this device through the Real Time Mensuration Program
and accept data to be stored on drum. Most of our work will be spent
in the development of stereo programs. One such program,
25X1
is presently under development under ano her requirement.
We have already spent 1400 man-hours on this project and anticipate an
additional 400 man-hours to design the interface so that it may be used
in the manner described above. AMB's present tasking is to concern
itself only with the programming of the central processor in this
application. No consideration has been given thus far to programming
the DDP 516.
25X1
Distribution:
Orig - NPIC/TSSG (Attn:
1 - NPIC/PSG/AID
2 - NPIC/PSG/AID/AMB
Chief, plied Mathematics ranch, AID
PSG/NPIC
II
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