;;;j;;;;"i." of missiLes in boost phase' made visible by the hundreds of kiloltatts ofinfyarectemissiomfxontherocketen6ine.Theobselvationofsuchraid.sonboard thesate}]-itemustthenbetlansmitted.togrouD.lstationsa]rd.forl'6rd'edtothe national connand autnority. Presr:mably, ii an adversary faunches ICBMS and SLBMS" he vill not ref:eain tron L att empt to i.nterfere with the conmunications from the inflareal-det eet i n satellite to the ground station' Ttrus, such a system must reckon vith defence "g"i""t jaming ind against physiceJ' attack on the gxou:rd station. 132, It shoutd be mentioned- here that particular enphasis -has,been given in recent years to nat ional- technical means of veri.fication for monitoring provisions of ttre Unitedstates-UssRSALTa€Ieements.Thesemeansconsistofobservationsate].1ites .i-"..i."" types ( incrudiig ptrotograptric satellj.tes ) which have the abilitv to detect, identify and, count rnissile lar:lchers ? observe sutnnarines under construction etc. As SALT I1 is intend.ed to control various qualitative aspects -of strategic forces, the "nationa.f i".rt"i"af meanst' must inclutle gror:'d-based' an6 space-based sensors, r.thich, e.g', it"fp to determine nissile ttrass sJrd' numbers of MIRVS " L33. The prina.ay use of airborne systems i5 to detect and iclentify enemy bonbers and cruise missiles. For a decade of nore' it has been possible to detect aircraft by airborrre radar over water, but only in the last r:* y:1l:_n"" tn' capability existed to detect aircraft by means of airborae radar against the background laJld clutter. The nost advanced. system for perforning this feat is theAl35 /392 l,ns-ta s il Annex Page 5J- united states so-carled AtrIACS aircraft, a modified cornroercial jet aircrafteounting a Laxge microvave radar, and equipped as wer-r- with conmand. and controlequipnent. rn principle, a'' AWAcs at l-2,ooo n. s-ltitude could see even low-flying ''ircraft out to about l+oo kn., and cou-ld. assign fighter aircraft, determinewhether nissiles l-aunched against the penetrating aircraft hacl destroyed thoseaircraft, etc, Hovever, tnany such aircraft patrolling sinul-taneously Lrould beneeded to detect effectively and to identify nuclear armed bonbers or cruisemissil-e carriers.