Regulation , Ho. 105-12 UNITED STATES ARMY INTELLIGENCE AND SECURITY COMMAND Section I GENERAL PUrPO0Sb- enn n mw now wen wenn nnn noncne coe } SCOPC moe nnn nn wenn nemo enone meee enoen 2 Effective date---------- erccccrese - 3 Def initions------co- enn en ne nnen ne -—- 4 OBJECTIVES Objective--------- ae | Advanced Identification Techniques-- 6 RESPONSIBILITIES Headquarters, USA INSCOM------------ 7 Subordinate Elements---------------- -& STANDARD PROCEDURES FOR MANAGEMENT, CONTROL, AND TASKING OF AIT GENEL al oon n enn wn nen nn nn cocoeece seers 9 Task ing-o---ec eee n nnn n nn nneneernne e-. 10 . AIT Library----------cnceneccceeeeee = 11 Instation Analytic Listings--------- 12 AIT Tip-Of fe-cenenewecwneeeecceeeee= = 13 ———-® Instation Unit Listings------------- 14 AIT Logs --n---nenn enon nneennncennn ~- 15 RepOrtS---- ence enon concen nnnecee <cee I! Ill . = ‘BNCLASSIFED DEPARTMENT OF THE ARMY Arlington Hall Station Arlington, Virginia 22212 ‘ s Communicattons-£ lectronics “ADVANCED IDENTIFICATION TECHNIQUES (AIT) (U) Paragraph USA INSCOM Reg 105-12 2 November 1978 > Pp eed wed weed coed Cs) Wwawnm 10 10 10 a 4 stnis regulation supersedes USA INSCOM Regulation 105-12, 26 February CLASSIFIED BY 000 DIR 5200.17 (M2) EXEMPT FROM GENERAL DECLASSIFICATICN SCHEDULE OF EXECUTIVE ORDER 11652 EXEMPTION CATEGORY 2 _ DECLASSIFY OM NOTIFICATION BY ORIGINATOR.
Section I GENERAL 1. (U) PURPOSE. This regulation provides standard criteria for local in-station management, control, and tasking of USA_INSCOM Advanced Identi 2. (U) SCOPE. This regulation applies to all INSCOM organizations and units engaged in or responsible for AIT management, control and tasking. This basic document is augmented by additfonal regulations pertaining to the specific areas of operation addressed within this document. 3. (U) EFFECTIVE DATE. This regulation and changes thereto will be placed in effect upon recefpt. 4. (C) OEFINITIONS. In order to standardize the terminology associated with the AIT Field, the following terms are defined below: gidvanced Identification Te b. (U) AIT Library. A collection of AIT recordings mounted on sheets, either matched or unmatched, catalogued and filed by representa- tive characteristic class{fication. c. (U) AIT Recording. A filmed record of one transmitter's characteristics taken at a specific point in time. d. (U) AM Trace. The AM Trace is @ visual display on the AIT film record of the signal voltage and includes both the zero trace lines (non-keyed display between elements/bauds) and the keyed transmitter Signal entelopes. e. (8) Buildup time. The number of milliseconds it takes the AM envelope to reach its initial maximum amplitude after key on. f. (U) Characteristics. The specific FM and AM variations of a transmitted signal. nn . (U) Continuity. A progressive accumulation of AIT recordirys 9 depicting major characteristics of a single transmitter, which shows changes or lack of changes in that transmitter over a progressive length of time. . “~
rm —_ USA INSCOM Reg 105-12 h. (0) Element. That envelope/baud portion of an oscillogram which represents both frequency and amplitude of the keyed transmitted signal. It is inclusive of the key-on, main-body, and key-off portions of the. emission. . 1. (U) Envelope. - That portion of an AIT representation showing the amplitude splay of the transmitted signal between key-on and key-off. Also referred to as baud. ig. (U) FM Trace. The FM Trace is a visual display on the AIT recording of the signal frequency which includes both the free swinging (between elements/bauds) and the carrier or keyed frequency of the trans- mitted signal. , . - k. (U) Key-off. The terminal portion of the element/baud which occurs when the transmitter key fs released. 1. (U) Key-on. The initial portion of an element/baud which occurs when the transmitter is keyed. m. (U) Match. Two AIT recordings obtained at different times, | which are matched due to similarity ef characteristics; thus, indicat- ing they are representative of the same transmitter. . , n. (U) Matched Group. A group of three or more AIT recordings obtained at erent times which match... o. (U) Millisecond. A unit of time utilized fa AIT measurement which {indicates one-thousandth of a second. , p. (U) Mounting sheet. An & x 13 inch sheet of paper (preprinted and usually of card stock) for mounting representative elements/bauds of an AIT recording for labeling, classification, analysis, filing and future matching purposes. q. . (U) Oscillogram. A representation of an oscilloscopic display which deagcts the AM and FM traces (keyed or not keyed). ra) Shot number. A one-up serialized number placed automati- cally on the AIT recording by the oscillograph unit each time the record button is depressed. . $. -{U) Shot-to-Shot Matches. Matches comprised of two AIT .records which display the same or. similar characteristics but which do not have sufficient continuity in depth (three or more recordings) to establish a matched group. , 3
t. (U) Singleton. An AIT recording which displays unique charac- teristics for which no match exists within the AIT library. u. (U) Timing marks. Pulses produced at the AIT equipment which are synchronized at-a rate of 1000 and 100 Hz. Pulses are printed as timing marks at a time interval of one each millisecond, witn every tenth millisecond producing a line across the AIT recording perpendicu- lar to the timing mark line. Section II ot OBJECTIVES . ah ae we Setdon IE - "RESPONSIBILITIES ae 7% FEL 7. (U). HEADQUARTERS, USA SORA, Heads of staff elements concerned AY guidance over the INSCOM AIT 4 will maintain staff supervision an 2
a | USA INSCOM Reg 105-12 programs through review of selected technical and operational informa-- tion provided on a continuing basis by field activities. In addition, necessary Ifafson and continuing studies will be conducted to insure that the programs remain abreast of the advancing technical sciences. 8. (U) SUBORDINATE ELEMENTS. Each INSCOM field element having AIT will be responsible for the control, processing, evaluation, and reporting of the efforts emloyed. The day-to-day operation and evaluation, timely recognition, and correction to problem areas is the responsibility of the field elements: Wher problems identified are beyond the capabflities of field elements to correct, assistance is to be requested from this Headquarters. Likewise, this Headquarters should be kept abreast of all significant AIT occurrances. Subordinate field elements engaged in AIT operations will prepare local in-station Standard Operating Procedures to include management, tasking, and control of AIT. As a minimum, {9- station procedures will include instructions outlined in this’ regulation .and technical guidance prepared and issued by NSA/CSS. Productivity reports will be prepared and generated in accordance with pertinent instructions contained in this regulation and NSA/CSS directives. < ows ° -. . . . . >. Ts tee eee Ste - : — — Seetioh I Te EE Jie), Seetioh IW LES é STANDARD PRO CEDURES -FOR MANAGEMENT, CONTROL, AND TASKING OF AIT
t USA INSCOM Reg 105-12 f. (U) Major characteristics which are considered during record . enelysis are as follows: “ (1) (U) Initial and Terminal Frequency Shifts. These shifts are positive, negative, steady, and var é. e initial frequency shifts may be further Segregated by the degree of recovery exhibited after the initial up or down shifting following key-on. Terminal frequency varia- tions are determined as having occurred only in the final 20 milliseconds of the element/baud recording. ee * (2) (U) Initial and Terminal Rela Breaks. Extreme caution should be exercised when cataloging by initial or terminal relay breaks; trans- mitter relay repair will correct this deficiency in most transmitters. (3) (U) Ripple Harmonies. Are generally utilized when they are con- sidered 8 majo; transmitter characteristic. Kipple harmonics are nighly susceptible to masking by man-made interference (QRN). (4) (U) Irreqular Transmitter. Effects. Unusual or unique types of characteristics ontch are not normally found on a signal recording. Such as: saw. toothed ripples, breaks {n transmission (within the body of the envelope), stepped frequency: shifts. a (5) (U) Qverload Effects. Shifts in amplitude which should only be used for classification purposes in the absence of outstanding Frequency Modulation characteristics. | (U) AIT recordings should be effectively deleted or weeded out from file folders periodically. A minimum review of folders for dele- tions would be once each quarter, or when no longer needed fer continuity purposes. Oisposition of all weeded recordings will be entered on AIT logs. .
cod UNCLASSIFIED -- USA INSCOM Reg 105-12 The proponent of this regulation is the Deputy Chief of Staff, Users are invited to send comments and suggested Operations. improvements .on DA Form 2028 (Recommended Changes to Publica- tions and Blank Forms) to this Headquarters, ATTN: IAQPS-0-S. FOR THE COMMANDER: JOHN M. CARR OFFICIAL: ; Colonel, 6S ; Gas / : Chief of Staff tain, GS 7 * CO Assistant Adjutant General --  “«- ce, OISTRIBUTION: “ ABC- Legs: Resident and Field Offices u. . ok UNCLASSIFIED