SUPPORT REQUESTED BY (SANITIZED)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04558A001900150020-4
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 3
• Document Creation Date: December 28, 2016
• Document Release Date: June 19, 2008
• Sequence Number: 20
• Publication Date: May 3, 1966
• Content Type: CABLE

Approved For Release 2008/06/19: CIA-RDP78B04558A001900150020-4
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Declassification Review by NGA/DoD
T 0 P S E C R E T 030155Z
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OUT58399
SUBJECT : SUPPORT REQUESTED BY
THE PURPOSE OF THIS CABLE IS TO REQUEST ADDITIONAL SUPPORT AND
RECLARIFY EXISTING SUPPORT REQUESTS.
1. REFERENCE REPLIES TO SUPPORT PREVIOUSLY
REQUESTED. THIS REPLY REFERS TO:
A. VARIANCE/COVARIANCE OF POSITION ERRORS.
B. SYSTEM TIME/VEHICLE TIME CORRELATION.
C. TIME VARIANCE FOR TIME CORRELATION.
D. VARIANCE OF ATTITUDE ERRORS.
E. RELATIONSHIP BETWEEN IMAGE AND TARGET COORDINATES.
THE ABOVE INFORMATION REQUESTS HAVE BEEN SATISFIED PARTIALLY a~..
//
I
THE EXTENT DEPENDING ON THE CAMERA SYSTEM REFERRED TOO.
2. VARIANCE/COVARIANCE OF POSITION ERRORS
WE HAVE RECEIVED THE BEST AVAILABLE ESTIMATES OF THE VARIANCE/
COVARIANCE FOR BOTH POSITION AND VELOCITY COMPONENTS, FOR BOTH THE
CORONA SYSTEMS. THERE IS, HOWEVER, CONFLICTING OPTION AS 25X1
TO WHETHER THESE ARE 1 SIGMA OR 3 SIGMA VALUES. CLOUD THIS BE
CLARIFIED?
EVENTUALLY, AS EXPERIENCE AND REFINEMENTS ARE EFFECTED, IT IS
PROBABLE THAT THESE VALUES WILL BECOME MISSION OUTPUTS RATHER THAN
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Approved For Release 2008/06/19: CIA-RDP78B04558A001900150020-4
 Approved For Release 2008/06/19: CIA-RDP78BO4558AO01900150020-4
CAMERA SYSTEM CONSTANTS TO BE PERIODICALLY UP DATED. IS THIS
INTERPRETATION A CORRECT ONE?
3. SYSTEM TIME/VEHICLE TIME CORRELATION AND TIME VARIANCE FOR
TIME CORRELATION.
WE HAVE RECENTLY RECEIVED FROM
PROGRAM DOCUMENTATION ENTITLED "910 QUADRATIC
CURVE FIT PROGRAM FOR TIME CORRELATION".
THIS DOCUMENTATION STATES PROGRAM OUTPUTS OF:
A. COEFFICIENTS OF THE QUADRATIC EQUATION
B. THE AVERAGE DIFFERENCE BETWEEN THE COMPUTED AND OBSERVED
VALUES.
C. THE STANDARD DEVIATION OF THE DIFFERENCES (SD).
SEVERAL QUESTIONS HAVE RESULTED.
1) WHEN CAN WE EXPECT TO RECEIVE THIS INFORMATION ON A
REGULAR BASIS?
2) ASSUME THAT THIS INFORMATION WILL BE INCLUDED AS PART
OF THE MCD.
1
3) AS REQUESTED THAT THE STANDARD DEVIATION OF 25X1
THE COMPUTED COEFFICIENTS BE INCLUDED AS OUTPUT, IN ADDITION TO
THE STANDARD DEVIATION OF THE DIFFERENCES.
4) ALSO REQUESTS THAT THE VARIANCE OF TIME HACK
PLACEMENT BE SUPPLIED FOR THE SYSTEM. THIS INFORMATION MAY
BE IN THE FORM OF A SPECIFIED DESIGN TOLERANCE, IF ACTUAL OBSER-
VATIONS ARE NOT AVAILABLE.
25X1
25X1
Approved For Release 2008/06/19: CIA-RDP78BO4558AO01900150020-4
 Approved For Release 2008/06/19: CIA-RDP78BO4558AO01900150020-4
4. VARIANCE OF ATTITUDE ERRORS
MEMORANDUM
SUPPLIED ONLY FOR THE
STATES THAT THIS INFORMATION WILL BE
VEHICLES. THIS INFORMATION IS ALSO
NEEDED FOR THE CORONA VEHICLES.
BY OF THIS NEED.
THE INFORMATION
HAS BEEN INFORMED
IS REQUESTING FOR THE( (SYSTEM
IN ADDITION TO THE ATTITUDE RATES ALREADY RECEIVED ARE THE DEADBANDS
ON VEHICLE PITCH, ROLL AND YAW AND THE VARIANCE ON PROGRAMMED MIRROR
PITCH AND MIRROR CRAB.
5. RELATIONSHIP BETWEEN IMAGE AND TARGET COORDINATES
THIS INFORMATION HAS BEEN RECEIVED AND IS ACCEPTABLE.
T 0 P S E C R E T
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Approved For Release 2008/06/19: CIA-RDP78BO4558AO01900150020-4