{"id":2637,"date":"2024-06-10T02:03:00","date_gmt":"2024-06-10T02:03:00","guid":{"rendered":"https:\/\/www.jammersignal.com\/?p=2637"},"modified":"2024-06-04T09:53:14","modified_gmt":"2024-06-04T09:53:14","slug":"what-frequency-band-is-used-for-surveillance-video-transmission","status":"publish","type":"post","link":"https:\/\/www.jammersignal.com\/fr\/what-frequency-band-is-used-for-surveillance-video-transmission\/","title":{"rendered":"Quelle est la bande de fr\u00e9quence utilis\u00e9e pour la transmission de vid\u00e9osurveillance ?"},"content":{"rendered":"

La bande de fr\u00e9quences utilis\u00e9e pour la transmission de vid\u00e9osurveillance peut varier en fonction du syst\u00e8me et de l'appareil utilis\u00e9s. Voici quelques bandes potentielles \u00e0 cette fin :<\/p>\n\n\n\n

1. Bande de 2,4 GHz :<\/h2>\n\n\n\n

Cette bande est souvent associ\u00e9e aux r\u00e9seaux WiFi traditionnels et fonctionne dans la gamme de fr\u00e9quences de 2,4 GHz. De nombreux syst\u00e8mes de surveillance r\u00e9sidentiels et de petites entreprises utilisent cette bande pour la transmission vid\u00e9o.<\/p>\n\n\n\n

2. 5 GHz :<\/h2>\n\n\n\n

Une autre bande WiFi couramment utilis\u00e9e qui fonctionne dans la gamme de fr\u00e9quences de 5 GHz. Certains appareils WiFi et syst\u00e8mes de surveillance tr\u00e8s performants choisissent de transmettre des vid\u00e9os dans cette bande parce qu'elle offre une plus grande largeur de bande et moins d'interf\u00e9rences que la bande des 2,4 GHz.<\/p>\n\n\n\n

\"fr\u00e9quence<\/a><\/figure>\n\n\n\n

3. Bande des 900 MHz :<\/h2>\n\n\n\n

Cette bande fonctionne dans la gamme de fr\u00e9quences des 900 MHz et certains syst\u00e8mes de surveillance sans fil peuvent l'utiliser pour la transmission vid\u00e9o. Elle offre de plus grandes distances de transmission, mais une largeur de bande relativement faible. A brouilleur de t\u00e9l\u00e9phone portable<\/a> vaut la peine d'\u00eatre achet\u00e9e.<\/p>\n\n\n\n

4. Bandes de 1,2 GHz et de 2,4 GHz :<\/h2>\n\n\n\n

Les syst\u00e8mes de surveillance de qualit\u00e9 professionnelle peuvent utiliser ces bandes pour la transmission vid\u00e9o, en particulier lorsque des distances de transmission plus longues et une meilleure qualit\u00e9 vid\u00e9o sont requises.<\/p>\n\n\n\n

Il convient de noter que les r\u00e9glementations et les restrictions relatives \u00e0 l'utilisation de bandes de fr\u00e9quences sp\u00e9cifiques peuvent varier d'un pays \u00e0 l'autre et d'une r\u00e9gion \u00e0 l'autre.<\/p>\n\n\n\n

Les informations suivantes fournissent plus de d\u00e9tails sur les bandes de transmission de la vid\u00e9o de surveillance :<\/p>\n\n\n\n

    \n
  1. Bande de 2,4 GHz :<\/li>\n<\/ol>\n\n\n\n

    La bande des 2,4 GHz, \u00e9galement connue sous le nom de bande ISM (Industrial, Scientific, and Medical), est largement utilis\u00e9e dans les dispositifs de r\u00e9seau sans fil bas\u00e9s sur le WiFi, y compris les syst\u00e8mes de surveillance utilis\u00e9s dans les maisons et les bureaux. Toutefois, comme cette bande est largement utilis\u00e9e dans le monde entier, elle est susceptible de subir des interf\u00e9rences provenant d'autres r\u00e9seaux WiFi, d'appareils Bluetooth, de fours \u00e0 micro-ondes, etc. Par cons\u00e9quent, des interf\u00e9rences de signal et des probl\u00e8mes de transmission peuvent survenir.<\/p>\n\n\n\n

    \"fr\u00e9quence<\/figure>\n\n\n\n
      \n
    1. Bande de 5 GHz :<\/li>\n<\/ol>\n\n\n\n

      La bande 5 GHz est une autre bande couramment utilis\u00e9e dans les r\u00e9seaux WiFi. Par rapport \u00e0 la bande des 2,4 GHz, la bande des 5 GHz offre plus de canaux disponibles, une plus grande largeur de bande et moins d'interf\u00e9rences. Par cons\u00e9quent, les syst\u00e8mes de surveillance \u00e0 haute performance et les \u00e9quipements de qualit\u00e9 professionnelle peuvent choisir la bande des 5 GHz pour la transmission vid\u00e9o.<\/p>\n\n\n\n

        \n
      1. Autres groupes :<\/li>\n<\/ol>\n\n\n\n

        Outre les bandes de 2,4 GHz et de 5 GHz, il existe d'autres bandes adapt\u00e9es \u00e0 la transmission vid\u00e9o sans fil. Par exemple, la bande 900 MHz peut fournir des distances de transmission plus longues dans certains sc\u00e9narios, tandis que les bandes 1,2 GHz et 2,4 GHz sont utilis\u00e9es pour des syst\u00e8mes de surveillance professionnels sp\u00e9cifiques.<\/p>\n\n\n\n

        Pour d\u00e9terminer la bande appropri\u00e9e \u00e0 un syst\u00e8me de surveillance, il faut tenir compte de la conception, de la configuration et des r\u00e9glementations locales. Les diff\u00e9rentes bandes ont des caract\u00e9ristiques, des avantages et des inconv\u00e9nients diff\u00e9rents, et le choix doit \u00eatre coh\u00e9rent avec les exigences et les conditions sp\u00e9cifiques.<\/p>\n\n\n\n

        En outre, il convient de noter que les syst\u00e8mes de surveillance professionnels peuvent opter pour des connexions filaires, telles que le c\u00e2ble ou la fibre, au lieu de s'appuyer uniquement sur la bande WiFi pour la transmission vid\u00e9o. Les connexions c\u00e2bl\u00e9es offrent g\u00e9n\u00e9ralement une plus grande fiabilit\u00e9 et stabilit\u00e9 et r\u00e9duisent la sensibilit\u00e9 aux interf\u00e9rences sans fil.<\/p>","protected":false},"excerpt":{"rendered":"

        La bande de fr\u00e9quences utilis\u00e9e pour la transmission de vid\u00e9osurveillance peut varier en fonction du syst\u00e8me et de l'appareil utilis\u00e9s. Voici quelques bandes potentielles \u00e0 cette fin : 1. Bande de 2,4 GHz : Cette bande est souvent associ\u00e9e aux r\u00e9seaux WiFi traditionnels et fonctionne dans la gamme de fr\u00e9quences de 2,4 GHz. De nombreux syst\u00e8mes de surveillance r\u00e9sidentiels et [...]<\/p>","protected":false},"author":1,"featured_media":1783,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[99],"tags":[],"class_list":["post-2637","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-signal-jammer-information"],"yoast_head":"\nWhat frequency band is used for surveillance video transmission? - JAMMERSIGNAL<\/title>\n<meta name=\"description\" content=\"In addition to the 2.4GHz and 5GHz bands, there are other bands suitable for wireless video transmission. 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