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<br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />rPl 7'1 '}! ll.~r"'''' <br />~~J,"2~:~,- .1if__'="'~_ _____ _.__,.., <br /> <br />'5 ..., 45 . _.. - .. . - ", <br />I I <br />. . Scon Ol~' <br />I '''''''' . Oem 0 I <br /> <br />. cs. i <br />· L.------1 <br />~i <br />.! <br /> <br />~ <br />I <br /> <br /> <br />. <br />I <br />, <br />, Jo05lN I <br />o CITY (lLL..... I <br />I O!lUll.ETlC '_'_'_-_' <br />, 1------- <br />\,.--.---------------. <br />JS . :n ,. <br /> <br />IlII <br /> <br />\ <br /> <br />0'- .-b- <br />~; <br />.. <br /> <br />GWEN <br />o CITY <br /> <br />.... . <br />. . <br /> <br />OCltWRlN 0 ':::: <br /> <br />. <br /> <br />( <br /> <br />I'l!J 1M. '" ,!LE\I U (III!I;) <br />llA E 11111 , aD <br />T1~13 . . <br />_ IIl>HlZ _ (...) <br />CllHTOlIt LB.€LI IllIZ <br />~ :n .~ <br /> <br />~ <br />(Z) <br /> <br />'- <br /> <br />l1li <br /> <br />. <br /> <br /> <br />& <br /> <br /> <br />(a) The range corrected COn. <br />tour tor the 5,25, and .5 <br />dbl lotenally level. are shown <br />for. Une of echoea In the <br />northern lector 01 Muddy <br />Road IV. In 1111. ...mpl. the <br />mutmum lntenstty core 20 <br />mllee north of the radar alte <br />hu . r.necUvUy of 52 db! <br />.a .hown by the computer <br />drawn curaer (loUd Une). <br /> <br />.. <br /> <br />j <br /> <br />. <br />. <br /> <br /> <br />A PPI CIUl be .cqulrod In <br />about 20 lee. Aa additional <br />20 lee. are required to d1_- <br />play the t&nS' oormaUlted <br />and contoured radu ec hoell <br />on the T.klronllt 4010 CRT <br />dl.pl., unit. All, PPI <br />aelected tor .lollle on the <br />computer cUlk pack CID be <br />Instantly pl.,ed back. or <br />they can be retained for uae <br />In later analyall. <br /> <br />.. <br /> <br />. <br /> <br />.. <br /> <br />. <br /> <br />(b) While aeedlng opera. <br />lions are In progresa there <br />may be a need tor a eloeer, <br />delaJled look at the atructure <br />01 a particular echo. In this <br />example the Intense cell 20 <br />mi. north 01 the radar .Ue <br />Wall lelected lor closer <br />study. An expanded, off- <br />aet display thue Ilvel the <br />leedlng director. detal led <br />view of the PPI prattle 01 <br />the cell.. <br /> <br />. <br /> <br />During later anal,.ll there <br />ma, alIa be I need lor <br />detailed dl.pl.y.. The.. <br />can be generated from the <br />digitally alored radar data, <br />with the analyst Belecting <br />any porUon of tbe etored <br />PPI tor atudy. The .elec- <br />ted cell or portloq 01 the <br />PPI lean can be oIf-aet and <br />displayed at an, aeale and <br />at any contour Interval. <br /> <br />Figure 4. An example of a computer generated radar PPI display. <br /> <br />23 <br />