Mtcraw-Hill Pub

AVIONICS

Ju'y 5, '965

Titan 3C

Fa(ilities,

Management

Digitrac to Aid Sweden's Traffic ControlBy Philip J. Klass

Stockholm-Sweden is applying aiitomation techniques to the difficult prob-lem of handling a mixture of heavy mmtary and moderate civil air traffic inStockholm's multi-airport termim] area.to be app]ied to other centers.

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If successful, the teclmiques are likely

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ii:n:äi:;ii:itria:d;s;ito3,1':i:eojeh;e::;!;i:f:o:|:l:i:;ifis not surprising because Sweden hasbeen a pionec`r iii \Vc`.`t Europe m the

Standard Radio & Tele-fon AB

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Li;.isFeonr!h,åi,st.oocähpojgiswåseeåps:åial,lgprovide semi-automatic tracking of air-

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two Censor digital computers, built bywhich

for theSwedish STRIL 60 air defense svstem.

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Stockholm tcmiinal arc:i, a Dccca

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both mdnrs may appcar as two sci)aratc

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oth.crs will bc conmctcd for oiily aftcr

t"ffic coiitrol plmiiing.Sta`id.iTtl R.idio & Tclc`-Mc`aiiwhilc,

!g!i is worki`ig at its o\`.n c`xpc`iisc w`it

å,:,s:äå ts°w.t.',`_.C,i.`a,r8sC ,,::,t:`rn t:.`o'm'i;`;`,r,:å:on thc contincnt is tlic S.itco systcm

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CLOS[-UP of controller position shows 16-in. cathode råy tube with area map superimposedclectronically. as well as tab`ilar display (arrow, right) which can show important flight dataconceining six aircraft of interest to thc controller.

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§h;e#;;±t§;åo§f§s;:;[::;e;:;o§*jc;;¥[,ds姧controller can, if hc wishes, a]so displayraw radar dÅta.

Thc controllers will bc ab]e to gcncr-

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TWO CEl`lsoR digital computers installed at Artanda airpor[ are in limibed opcrational `iseby Standard Radio & Tetefon. Engineeis are testing a computer program to pcTmit automatictracking and conflict prediction. The two computers, similar to those built for Swedish airdifense use, are full)/ transistorized. The compute[ is a parallel binary machine designedeis+specially to handle real-time data processing problems. It `ises a random-acccss magncticoo"e mcmory as an internal store and has a semi-pemanent instruction memory.