{"title":"VLF超指令循环数组","authors":"E. Seeley","doi":"10.6028/JRES.067D.059","DOIUrl":null,"url":null,"abstract":"SUjwrclirl'ctil·it.v may be ach iC'vecl with sho rt VLF loop arrays bC'cause thl' bramlyidth d<'pcnds on l ~ ' upon the numbe r of loops and not the length of the ar ray. In a ddition the usual factors limiting s lIpel'dircctivity a rc not so prevall'l)\\' due to tl1(' (Ircoupl ing b('( I\\'rC' n Vr,F loops, Expressions al'l' deril'ed for thl' bcamwid th, ofl'l'otivl' hl'ight, J'('cl'ption patteI'll , ampli tude and pOsillon of the back lobes and the dfeets of loop voltage phasC' and amplituci!' ciirrrrrncrs brtwl'l'n loop\". Thesl' eCjuat ions dl',;cr ibl' short a rra.vs of any nUl1lbr r of loop' ;. The most s('r ious lim itation on thl' directivity of supcrcli rl'ctive loop a rra.vs is t 11(' I'ollagc pha\"l' ancl amplitudl' ciiffNe ncl's bC'lwee n loops. These cliffC' rl'nces bl'tw('rn adjacent loops add up to obse ul'(' tlw nulls anci dct('riorate tho reception pat terll.","PeriodicalId":398550,"journal":{"name":"Journal of Research of the National Bureau of Standards, Section D: Radio Propagation","volume":"60 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1963-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"VLF superdirective loop array\",\"authors\":\"E. Seeley\",\"doi\":\"10.6028/JRES.067D.059\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"SUjwrclirl'ctil·it.v may be ach iC'vecl with sho rt VLF loop arrays bC'cause thl' bramlyidth d<'pcnds on l ~ ' upon the numbe r of loops and not the length of the ar ray. In a ddition the usual factors limiting s lIpel'dircctivity a rc not so prevall'l)\\\\' due to tl1(' (Ircoupl ing b('( I\\\\'rC' n Vr,F loops, Expressions al'l' deril'ed for thl' bcamwid th, ofl'l'otivl' hl'ight, J'('cl'ption patteI'll , ampli tude and pOsillon of the back lobes and the dfeets of loop voltage phasC' and amplituci!' ciirrrrrncrs brtwl'l'n loop\\\". Thesl' eCjuat ions dl',;cr ibl' short a rra.vs of any nUl1lbr r of loop' ;. The most s('r ious lim itation on thl' directivity of supcrcli rl'ctive loop a rra.vs is t 11(' I'ollagc pha\\\"l' ancl amplitudl' ciiffNe ncl's bC'lwee n loops. These cliffC' rl'nces bl'tw('rn adjacent loops add up to obse ul'(' tlw nulls anci dct('riorate tho reception pat terll.\",\"PeriodicalId\":398550,\"journal\":{\"name\":\"Journal of Research of the National Bureau of Standards, Section D: Radio Propagation\",\"volume\":\"60 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1963-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Research of the National Bureau of Standards, Section D: Radio Propagation\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.6028/JRES.067D.059\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Research of the National Bureau of Standards, Section D: Radio Propagation","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.6028/JRES.067D.059","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
SUjwrclirl'ctil·it.v may be ach iC'vecl with sho rt VLF loop arrays bC'cause thl' bramlyidth d<'pcnds on l ~ ' upon the numbe r of loops and not the length of the ar ray. In a ddition the usual factors limiting s lIpel'dircctivity a rc not so prevall'l)\' due to tl1(' (Ircoupl ing b('( I\'rC' n Vr,F loops, Expressions al'l' deril'ed for thl' bcamwid th, ofl'l'otivl' hl'ight, J'('cl'ption patteI'll , ampli tude and pOsillon of the back lobes and the dfeets of loop voltage phasC' and amplituci!' ciirrrrrncrs brtwl'l'n loop". Thesl' eCjuat ions dl',;cr ibl' short a rra.vs of any nUl1lbr r of loop' ;. The most s('r ious lim itation on thl' directivity of supcrcli rl'ctive loop a rra.vs is t 11(' I'ollagc pha"l' ancl amplitudl' ciiffNe ncl's bC'lwee n loops. These cliffC' rl'nces bl'tw('rn adjacent loops add up to obse ul'(' tlw nulls anci dct('riorate tho reception pat terll.
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