TELEMETRY OUTPUT DATA RECORDED FROM MISSIONS FLOWN BY THE SR-71 RECONNAISSANCE SYSTEM

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04549A000400170018-7
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: December 28, 2016
• Document Release Date: March 16, 2007
• Sequence Number: 18
• Publication Date: March 12, 1968
• Content Type: CABLE

Approved For R se 2007/03/~1~~6 :: CIA-RDP78BO4549AO00400170018-7
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S E C R F'- 'H 68 CITE
TTY PRIOR
ATTN:
SUBJ: TELEMETRY OUTPUT DATA RECORDED FROM MISSIONS FLOWN BY THE
SR-71 RECONNAISSANCE SYSTEM.
1, THE SR-71 VEHICLE CONTAINS A MISSION RECORDER SYSTEM (MRS)
WHICH MONITORS VEHICLE AND SENSOR DATA FOR AN ENTIRE MISSION.
THIS DATA IS NECESSARY FOR PRECISE MENSURATION IN SUPPORT OF
SECON~ AND RD PHASE PRODUCT EXPLOITATION.
2.1 IS NOT AWARE OF AN OPERATIONAL PROCEDURE WHICH PROVIDES
FOR THE DISSEMINATION OF THE MRS DATA TO THE CUSTOMERS RECEIVING THE
IMAGERY. TO ELIMINATE THIS DEFICIENCY. IT IS REQUESTED THAT
REQUIREMENT BE LEVIED WHICH PROVIDES FOR THE RECEIPT ATI OF
MRS DATA FOR EACH OPERATIONAL SR -71 E
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3. THE DATA SHOULD BE RECEIVED AT APPROXIMATELY TEN
HOURS BEFORE THE IMAGERY SO THAT THE A A CAN BE PROCESSED THROUGH
IN-HOUSE COMPUTER PROGRAMS. A METHOD SHOULD BE AVAILABLE FOR
CORRELATING THE DATA TO THE IMAGERY EITHER BY CABLE REPORT OR BY 0
CAMERA FIRING SIGNALS RECORDED ON THE MRS DATA TAPE.
4. THE DATA TAPE SHOULD INCLUDE AT LEAST THE FOLLOWING ITE
PAGE 20 3216 S E C R E T
FOR MENSURATION ON EACH FRAME OF IMAGERY:
A. BAROMETRIC ALTITUDE WITH "D" VALUE PRESSURE CORRECTI
TO ALTITUDE ABOVE SEA LEVEL.
Be RADAR ALTITUDE (WHEN RECORDED).
C. GROUND TRACK VELOCITY.
D. VEHICLE TO GROUND ROLL, VEHICLE TO GROUND PITCH, VEHI
TO GROUND YAW.
E. VELOCITY OVER SLANT RANGE RATIO AT WHICH THE CAMERAS
OPERATED.
F. GROUND TRACK AZIMUTH OF VEHICLE NADIR LINE. IF THIS I
NOT AVAILABLE, VEHICLE HEADING CAN BE SUBSTITUTED.
G. LATITUDE AND LONGITUDE OF VEHICLE NADIR.
H. TIME, ACCURATE TO 0.1 SECOND (RECORD IN GREENWICH MEA
TIME OR MISSION ELAPSED TIME AND PROVIDE A METHOD TO CONVERT F
ONE TO THE OTHER).
1. CAMERA TO VEHICLE ROLL, CAMERA TO VEHICLE PITCH, CAME
TO VEHICLE YAW.
J. SHUTTER VELOCITY FOR THE TECHNICAL OBJECTIVE CAMERA.
K. SCAN RATE FOR THE OPERATIONAL OBJECTIVE CAMERA.
OTHER ITEMS RECORDED ON THE MRS TAPE WILL ASSIST IN PLOTTING
3216.
196 ,.',VO. 12 20 03 I 25X1
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PAGE 3 0 3216 S E C R E T
MISSION AND DETERMINING THE ACCURACY OF THE ABOVE 16 PARAMETERS.
SOME ITEMS (E.G., CAMERA MODE AND POINTING ANGLE) DESIRABLE TO
NPIC ARE NOT RECORDED ON THE MRS TAPE BUT COULD POSSIBLY BE ADDED.
THFSF EMS REQUIRE FURTHER DEFINITION BY MRS PERSONNEL BEFORE
CAN SAY WHETHER THE PARAMETERS ARE REQUIRED.
51, SCUSSIONS WILL HAVE TO BE CARRIED OUT BETWEEN
SAC (BEALE AFB) TO SOLVE THE TECHNICAL PROBLEMS OF S
DATA. THE SUBJECT WAS DISCUSSED INFORMALLY BETWEEN
BEALE PERSONNEL DURING THE NICE GIRL EXERCISE. THE
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MRS DATA WOULD BE QUICKEST AND EASIEST BY UNIVAC 1004 DATA LINK.
THP FORMAT TO BE TRANSMITTED VIA THE 1004 CAN BE WORKED OUT BY
25X1
AND SAC.
6. SUMMARIZE, HAS A NEED FOR DATA RECORDED BY THE 25X1
MRS ON SR-71 MISSIONS. AT THE PRESENT TIME, NO PROCEDURE EXISTS
TO TRANSMIT THE DATA TO REQUESTS THAT A REQUIREMENT 25X1
BE ISSUED TO SUPPLY THIS DATA IN TIMELY MANNER FOR EACH MISSION.
AFTER THIS REQUIREMENT IS ISSUED, AND SAC CAN WORK OUT 25X1
THE TECHNICAL ASPECTS OF THE TRANSMISSION TO THEIR SATISFACTION.
IT IS DESIRED THAT A COMPLETE TRANSMISSION PROCEDURE BE DEVELOPED
PRIOR TO ANY IMPENDING ACTIVITY.
S E C R E T
E
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