{"id":810,"date":"2024-04-08T10:21:07","date_gmt":"2024-04-08T10:21:07","guid":{"rendered":"https:\/\/arkis.com.tr\/?page_id=810"},"modified":"2024-04-09T19:49:59","modified_gmt":"2024-04-09T19:49:59","slug":"spektrum-analizor-nedir-ve-nrf24501-ile-basit-bir-spektrum-analizor-yapimi","status":"publish","type":"page","link":"https:\/\/arkis.com.tr\/?page_id=810","title":{"rendered":"Spektrum Analiz\u00f6r Nedir? (ve nRF24L01 ile Basit Bir Spektrum Analiz\u00f6r Yap\u0131m\u0131)"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Spektrum Analiz\u00f6r Nedir? (ve nRF24L01 ile Basit Bir Spektrum Analiz\u00f6r Yap\u0131m\u0131)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Saf sin\u00fczoidal bir sinyalin grafiksel g\u00f6steriminin iki temel y\u00f6ntemi vard\u0131r. \u0130lki zaman b\u00f6lgesindeki \u00e7izimidir. Bunun i\u00e7in yatay eksenin zaman, dikey eksenin ise genlik olmas\u0131 beklenir. Sin\u00fczoidal sinyalin di\u011fer g\u00f6sterim y\u00f6ntemi frekans b\u00f6lgesindeki \u00e7izimdir. Frekans b\u00f6lgesi g\u00f6sterimi i\u00e7in yatay eksende frekans ve dikey eksende genlik veya g\u00fc\u00e7 de\u011feri g\u00f6sterilir. Bu durumda frekans b\u00f6lgesi g\u00f6sterimindeki her kesikli nokta bir sin\u00fczoidal sinyali temsil eder. Mesela 100 MHz frekansa sahip bir sinyalin zaman ve frekans b\u00f6lgesindeki \u00e7izimleri \u015fekildeki gibi g\u00f6sterilebilir. E\u011fer frekans\u0131m\u0131z\u0131 iki kat\u0131na yani 200 MHz\u2019e \u00e7\u0131kart\u0131rsak zaman b\u00f6lgesindeki grafikte dalgalar\u0131n s\u0131kla\u015ft\u0131\u011f\u0131n\u0131 g\u00f6r\u00fcr\u00fcz. Ancak frekans b\u00f6lgesindeki de\u011fi\u015fim i\u00e7in sinyali temsil eden noktan\u0131n sa\u011fa do\u011fru kayarak 200 MHz konumuna yerle\u015fmesi yeterlidir.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-1024x576.png\" alt=\"\" class=\"wp-image-811\" srcset=\"https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-1024x576.png 1024w, https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-600x337.png 600w, https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-768x432.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Zaman ve frekans b\u00f6lgesi olarak ifade edilen bu iki g\u00f6sterim \u015feklinin pratikte cihaz olarak kar\u015f\u0131l\u0131klar\u0131 s\u0131ras\u0131yla osiloskop ve spektrum analiz\u00f6rd\u00fcr. Spektrum analiz\u00f6r cihaz\u0131n\u0131n dikey ekseni genellikle sinyalin dBm cinsinden g\u00fc\u00e7 de\u011feridir.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-1-1024x576.png\" alt=\"\" class=\"wp-image-812\" srcset=\"https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-1-1024x576.png 1024w, https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-1-600x337.png 600w, https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-1-768x432.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Bir spektrum analiz\u00f6r\u00fcn RF giri\u015f portuna geni\u015f bantl\u0131 bir anten ba\u011fland\u0131\u011f\u0131 zaman, antene ula\u015fan sinyalleri ekranda g\u00f6rmek m\u00fcmk\u00fcnd\u00fcr.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"577\" src=\"https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-3-1024x577.png\" alt=\"\" class=\"wp-image-814\" srcset=\"https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-3-1024x577.png 1024w, https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-3-600x338.png 600w, https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-3-768x433.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">E\u011fer zamana ba\u011fl\u0131 olarak spektrumdaki de\u011fi\u015fimler incelenmek isteniyorsa, spektrumun anl\u0131k de\u011ferleri bir alt k\u0131sma kayd\u0131r\u0131larak hareketli bir grafik olu\u015fturulur. S\u00f6z konusu g\u00f6sterim, bir \u00e7a\u011flayana benzedi\u011fi i\u00e7in \u015felale veya \u00e7a\u011flayan grafi\u011fi (waterfall plot) olarak isimlendirilir.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"573\" src=\"https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-4-1024x573.png\" alt=\"\" class=\"wp-image-815\" srcset=\"https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-4-1024x573.png 1024w, https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-4-600x336.png 600w, https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-4-768x430.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Bu videoda ayr\u0131ca, nRF24L01 kullan\u0131larak basit bir spektrum analiz\u00f6r\u00fcn nas\u0131l yap\u0131labilece\u011fini g\u00f6sterece\u011fiz. Bunun i\u00e7in bir Arduino nano ve al\u0131c\u0131 modunda \u00e7al\u0131\u015fan bir nRF mod\u00fcl\u00fc kullanaca\u011f\u0131z. Bu iki mod\u00fcl\u00fcn ba\u011flant\u0131lar\u0131 uygun bir \u015fekilde yap\u0131ld\u0131ktan sonra bilgisayar ekran\u0131nda grafi\u011fi g\u00f6rselle\u015ftirebilmek i\u00e7in bir USB kabloya ihtiyac\u0131m\u0131z olacak. nRF24L01 sahip oldu\u011fu dahili mekanizma ile kullanabildi\u011fi kanallarda bir ta\u015f\u0131y\u0131c\u0131 sinyal olup olmad\u0131\u011f\u0131n\u0131 belirleyebilmektedir. Arduino mikrokontrolc\u00fc i\u00e7in yaz\u0131lm\u0131\u015f k\u00fct\u00fcphanede bulunan testCarrier() fonksiyonu ile bu \u00f6zelli\u011fi basit bir \u015fekilde kullanabiliyoruz. Bu fonksiyon yard\u0131m\u0131 ile bir \u00f6nceki dinleme zaman aral\u0131\u011f\u0131nda se\u00e7ilen kanalda ta\u015f\u0131y\u0131c\u0131 sinyalin varl\u0131\u011f\u0131n\u0131 sorgulamak m\u00fcmk\u00fcn. Bu i\u015flemi b\u00fct\u00fcn kanallar i\u00e7in belirli bir say\u0131 adedinde tekrar ederek her kanal i\u00e7in tespit edilen ta\u015f\u0131y\u0131c\u0131 sinyal say\u0131s\u0131n\u0131 ekranda g\u00f6rselle\u015ftiriyoruz. B\u00f6ylece, kesin bir g\u00fc\u00e7 seviyesi bilgisi i\u00e7ermese de, 2.4 GHz ile 2.575 GHz aras\u0131ndaki 126 adet kanal\u0131n me\u015fguliyet durumunu g\u00f6steren bir spektrum analiz\u00f6r elde etmi\u015f oluyoruz.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"586\" src=\"https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-5-1024x586.png\" alt=\"\" class=\"wp-image-816\" srcset=\"https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-5-1024x586.png 1024w, https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-5-600x343.png 600w, https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-5-768x440.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Kodlar<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Arduino Nano:<\/strong> <a href=\"https:\/\/drive.google.com\/file\/d\/1_fMNNUyeYSBS9EHmjDkUhJFMTOJKiCct\">https:\/\/drive.google.com\/file\/d\/1_fMNNUyeYSBS9EHmjDkUhJFMTOJKiCct<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Java:<\/strong> <a href=\"https:\/\/drive.google.com\/file\/d\/1FNnXcqwxYnapf6bCkGK5d9ymdKKSa-Mn\">https:\/\/drive.google.com\/file\/d\/1FNnXcqwxYnapf6bCkGK5d9ymdKKSa-Mn<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Arduino nano yaz\u0131l\u0131m\u0131n\u0131 nRF k\u00fct\u00fcphanesi ile beraber gelen scanner isimli uygulamay\u0131 modifiye ederek elde ettik. Bilgisayar taraf\u0131ndaki Java kodlar\u0131n\u0131n \u00e7al\u0131\u015fabilmesi i\u00e7in JSerialComm k\u00fct\u00fcphanesini y\u00fcklemeniz gerekiyor. <a href=\"https:\/\/fazecast.github.io\/jSerialComm\/\">https:\/\/fazecast.github.io\/jSerialComm\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bu proje ile elde edilen basit spektrum analiz\u00f6r yard\u0131m\u0131yla 2.4 GHz ISM band\u0131n\u0131 kullanan cihazlar\u0131n yayd\u0131\u011f\u0131 elektromanyetik dalgalar\u0131n varl\u0131\u011f\u0131n\u0131 test edebilirsiniz. Bu aral\u0131\u011f\u0131 kullanan baz\u0131 cihazlar\u0131 \u015fu \u015fekilde \u00f6zetleyebiliriz: <strong>wi-fi<\/strong> ile internet ba\u011flant\u0131s\u0131 sa\u011flayan modem, bilgisayar ve cep telefonlar\u0131. <strong>Bluetooth<\/strong> teknolojisi kullanan her t\u00fcr cihaz. <strong>nRF24L01<\/strong> ve benzeri haberle\u015fme mod\u00fclleri. Baz\u0131 otomobillerin <strong>uzaktan kumanda anahtarlar\u0131<\/strong>, dron kumandalar\u0131 ve oyun konsollar\u0131n\u0131n oyun kollar\u0131. Ve son olarak, bir haberle\u015fme cihaz\u0131 olmasa da mikrodalga f\u0131r\u0131nlar da ISM 2.4 GHz frekans aral\u0131\u011f\u0131n\u0131 kullan\u0131rlar.<\/p>\n\n\n\n<figure class=\"wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Spektrum Analiz\u00f6r Nedir? (ve nRF24L01 ile Basit Bir Spektrum Analiz\u00f6r Yap\u0131m\u0131)\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/vozK1A6HJNE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Spektrum Analiz\u00f6r Nedir? (ve nRF24L01 ile Basit Bir Spektrum Analiz\u00f6r Yap\u0131m\u0131) Saf sin\u00fczoidal bir sinyalin grafiksel g\u00f6steriminin iki temel y\u00f6ntemi vard\u0131r. \u0130lki zaman b\u00f6lgesindeki \u00e7izimidir. Bunun i\u00e7in yatay eksenin zaman, dikey eksenin ise genlik olmas\u0131 beklenir. Sin\u00fczoidal sinyalin di\u011fer g\u00f6sterim y\u00f6ntemi frekans b\u00f6lgesindeki \u00e7izimdir. Frekans b\u00f6lgesi g\u00f6sterimi i\u00e7in yatay eksende frekans ve dikey eksende genlik [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_crdt_document":"","_uag_custom_page_level_css":"","footnotes":""},"class_list":["post-810","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Spektrum Analiz\u00f6r Nedir? 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Sin\u00fczoidal sinyalin di\u011fer g\u00f6sterim y\u00f6ntemi frekans b\u00f6lgesindeki \u00e7izimdir. Frekans b\u00f6lgesi g\u00f6sterimi i\u00e7in yatay eksende frekans ve dikey eksende genlik [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/arkis.com.tr\/?page_id=810\" \/>\n<meta property=\"og:site_name\" content=\"Ark\u0131\u015f M\u00fchendislik\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-09T19:49:59+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/arkis.com.tr\/wp-content\/uploads\/2024\/04\/image-1024x576.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/arkis.com.tr\\\/?page_id=810\",\"url\":\"https:\\\/\\\/arkis.com.tr\\\/?page_id=810\",\"name\":\"Spektrum Analiz\u00f6r Nedir? 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(ve nRF24L01 ile Basit Bir Spektrum Analiz\u00f6r Yap\u0131m\u0131) - Ark\u0131\u015f M\u00fchendislik","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/arkis.com.tr\/?page_id=810","og_locale":"tr_TR","og_type":"article","og_title":"Spektrum Analiz\u00f6r Nedir? (ve nRF24L01 ile Basit Bir Spektrum Analiz\u00f6r Yap\u0131m\u0131) - Ark\u0131\u015f M\u00fchendislik","og_description":"Spektrum Analiz\u00f6r Nedir? (ve nRF24L01 ile Basit Bir Spektrum Analiz\u00f6r Yap\u0131m\u0131) Saf sin\u00fczoidal bir sinyalin grafiksel g\u00f6steriminin iki temel y\u00f6ntemi vard\u0131r. \u0130lki zaman b\u00f6lgesindeki \u00e7izimidir. Bunun i\u00e7in yatay eksenin zaman, dikey eksenin ise genlik olmas\u0131 beklenir. Sin\u00fczoidal sinyalin di\u011fer g\u00f6sterim y\u00f6ntemi frekans b\u00f6lgesindeki \u00e7izimdir. 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