),BIF-107-50210-681 

NRO APPR FOR %Pages', 

RELEAS JULY 2015 

-1'eettETIDORIAN 

IVS 

COMMENTS 

(MOL DIVISION REVIEW) 

9 OCTOBER 1968 

HANDLE VIA BYEMAN 

CONTROL SYSTEM ONLY 

--seekR-E-T-/D OR IAN 

■•■■•••••1.1■■•■•■•■••••*•0■11•00/...* oaftwals empror 
NRO APPR 

RELEA 1 JULY 2015 

13.11-'-.10 7-50210-68; Page 

-SeeRS-T1DORIAN 

SUMMARY 

o ~ IMPLEMENTATION OF PRECISION OPEN-LOOP OPERATION IS DESIRABLE. 

FOR PARTIAL CLOUD COVER AND LOW MODULATION CASES 

o • IVS OPERATION UNDER MOST CONDITIONS OF PARTIAL CLOUD, COVER 

APPEARS FEASIBLE - STUDY NEEDED TO EVALUATE VARIOUS METHODS 

AND POTENTIAL VALUE 

o RELAXATION OF RATE SPEC UNDESIRABLE SOLUTION TO DYNAMIC 

NULL PROBLEM 

o WORK TO DATE INDICATES IMPROVEMENTS ARE NEEDED IN ALL SENSORS, 

BUT FUNDAMENTAL CONCEPT OF AUTOMATIC OPERATION IS SOUND 

DORIAN, 
( 1BIF-10 7-50210-68, 

NRO APP ;Page ? 

RELEA 1 JULY 2015 

-91eettell'IDORIAN 

SPECIAL COMMITTEE 

o MET AT GE ON 20, 21 SEPTEMBER 

PRESENTATIONS BY GE AND EACH VENDOR: ITEK, 

GOODYEAR, IlYCON 

COMMITTEE MADE UP OF: 

DR. B. O'BRIEN, CHAIRMAN 

DR. B. MCMILLAN 

MR. L. CROUCH 

DR. M. YARYMOVYCH 

MR. W. MCFADDEN 

COL. L. ALLEN 

DOR IAN 
y. 

NRO APP 

1 1131F-107-50210-68 

Page LI 

RELE i 1 JULY 2015 

/ DORIAN 

PRELIMINARY COMMITTEE REPORT SUMMARY 

• 

MAIN POINTS 

O IVS PROGRAM PROCEEDING SATISFACTORILY 

O HIGH CONFIDENCE OF SUCCESS WITH GOODYEAR ORHYCON 

O IVS SELECTION RECOMMENDATIONS (GOODYEAR AND HYCON) 

O COMPLETE TEST AND EVALUATION 

O UNDERSTAND AND ANALYZE IVS PRIOR TO SELECTION 

O CAREFULLY REVIEW PAST DEFICIENCIES . 

O UPON SUCCESSFUL COMPLETION SELECT ONE 1VS 

O ITEK IVS RECOMMENDATIONS 

O COMPLETE FABRICATION OFUN:T - GE WON'T TEST 

O DELIVER THIS UNIT FOR STUDY TO AVIONICS LAB 

/ DORIAN 
NRO APPROVdD FOR 

RELEASE '1 JULY 2015 

)BIF-107-50210-68 

;Page < • 

5-;C.RIET/D010„Nli 

GOODYEAR LIGHT EFFECT 

LIGHT INTENSITY 

I 

• 

• 

STEREO ANGLE 

FOV OF INSTRUMENT ON SIMULATOR 

evimiro■•■■■•■ 
i

—DEFLECTION SPACE 

OPTICAL 

IMAGE 

ELECTRON 

MULTIPLIER 

OUTPUT 

WRITE . 005 to .1 SEC 

LOCK ON 15 to . 25 SEC 

11.11ASE 

1131F-107-5 0210-68 1 'Page L 

(10)-5-BeR-ET SPECIAL HANDLING 

GOODYEAR IVS CORRELATION) 

0k- OPE 

TRACISrito 1,) Si C 

TEME.4 2 3 4 

(D) -30eIt-916SPECIAL HAtirDLDiG „00) 

NRO APP 

RELEA 1 JULY 2015 
AVERAGING OF DATA 

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7. 

F (C /M) 

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MODULATION ft 

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IBIF-107-50210-68 Page 2 • 1 NRO APPROVE 

RELEASE 1 Y 2015 
\ 

NRO •FePtL, rox 

RE SE 1 JULY 2015 SECRET /DORIAN 

1BIF-107-50210-68! 

IVS SPECIFICATION QUESTIONS 

o ARE REQUIREMENTS TOO SEVERE? 

SLIGHTLY INCREASE NULL ACCURACY-? • 

INCREASE LARGE ERROR GAIN TOLERANCE? 

IS WIENER SPECTRUM APPLICABLE AT EACH VENDOR'S 

SPATIAL FREQUENCY REGION? 

ARE UNESSENTIAL COMPLICATIONS BEING INTRODUCED? 

GE AVE SPECIFICATION RECOMMENDATIONS 

o DETERMINE A WIENER SPECTRUM ASAP 

o TIGHTEN OPEN LOOP (NO IVS) RATE REQUIREMENT 

DO NOT NOW REQUIRE IVS OPERATION IN CLOUD PRESENCE 

e,■.1 

—SeettELTIDORIAN 

p. 

IVS SUMMARY 
1131F-107-50210-68, Page 

CECRET / DORIAN 

IVS SUMMARY (CONT'D) 

0 IVS TESTER 

O BASIC DESIGN IS SATISFACTORV 

O GOODYEAR PENALIZED MORE THAN HYCON BY TESTER 

NRO APPROV 

RELEASE ULY 2015 

:". 

(LARGE TESTER FOV COMBINED WITH FALL-OFF 

IN LIGHT ENERGY WITH STEREO ANGLE BIAS 

CORRELATION FUNCTION UNREALISTICALLY) 

O SPECULAR REFLECTIONS EXIST 

IVS TEST PROGRAM 

O CONTINUE TO USE IVS TESTER 

O USE MATTE PAPER OR PROPERLY PLACED LIGHTS TO 

REDUCE SPECULAR REFLECTIONS 

O TEST ALSO WITH A THREE DIMENSIONAL TARGET 

INTERPRET TEST RESULTS IN LIGHT OF TESTER 

DEFICIENCIES 

/ DORIAN 
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• • 
,'DORIAN 

NRO 

R ASE 1 JULY 2015 

.;BIF-107-50210-68 

Page i I 

TRACKING MIRROR RATE ACCURACY 

WITHOUT IVS OR CREW ( co,NP N) 

PRESENT SPEC VALUE 

ON ORBIT CALIBRATION 

- RATE LEARNING 

(COUPLED WITH ON ORBIT CA.LIB.) 

WITH 400-FT 

A LT I TUDE ERROR 

(REMOVE) 

DORIAN 

CEI STATUS,OF DISPUTED ITEMS 

AEROSPACE 

POSITION 

'TM RATE ACCURACY WITH IVS 

FROM 17° to -Z5t) AT NADIR ONLY 

STEREO 

TM RATE ACCURACY WITH IVS APPLIES IF: 

"WIENER BOX" 

AVERAGE ALTITUDE 

DEVIATION IS LESS 

THAN 50 FEET 

ON AN AREA BASIS • 

SAME AS 

AEROSPACE 

LOWER RIGHT CORNER WANTS LARGER 

DELE TED WHERE NO CORNER FROM BOX 

TARGETS EXIST 

GE 

POSITION 

• 

OUT OF SCOPE 

OUT OF SCQPE.. 

• 
NRO APP 

IBIF-107-50210-68: Page 42/ 

RELEASE 1 JULY 2015 SECRET /DORIAN 

CE1 AGREED-TO ITEMS THAT ONCE WERE DISPUTED 

• TRACKING MIRROR RATE ACCURACY WITH IVS 

OVERALL 

IVS 

DRIVE A 

* PROVIDING THAT DRIVE A 1.1.SSIED WITH IVS < 

MMSS SHALLMETECT CLOUDS OR OTHER 1VS ANOMALIES 

AFFIRMATIVE CLOUD/ANOMALY INDICATION SHALL DO ANY COMBINATION: 

▪ INHIBIT PHOTOGRAPHY 

▪ DISABLE IVS (OPEN LOOP TM OPERATION) 

ALERT FLIGHT CREW (MA) 

▪ • INDICATE TO TELEMETRY 

O PRIMARY SIGNALS AVAILABLE FROM IVS TO BE PROCESSED IN COMPUTER 

O WS DOES NOT HAVE TO OPERATE IN PRESENCE OF CLOUDS 

—iieeR-ElftDORIAN