Abstract
The article presents the results of measurements of the parameters of the digital radio broadcasting DRM signal quality in the experimental zone of St. Petersburg in order to determine the influence of the transmission modes laid down in the DRM standard on the size of the service area.
Highlights
The article presents the results of measurements of the parameters of the digital radio broadcasting DRM signal quality in the experimental zone of St. Petersburg in order to determine the influence of the transmission modes laid down
ะัะธะตะผะฝะธะบ Rfmondial RF-SE19 ัะพั ัะฐะฝัะตั ะดะฐะฝะฝัะต ะผะพะฝะธัะพัะธะฝะณะฐ ัะธะณะฝะฐะปะฐ ั ะธัะฟะพะปัะทะพะฒะฐะฝะธะตะผ ััะฐะฝะดะฐััะฐ RSCI
PL0 ะบะฐัะตััะฒะพ ะฟัะธะตะผะฐ ัััะตััะฒะตะฝะฝะพ ัะปัััะธะปะพัั ัะพะปัะบะพ ะฝะฐ ะฝะตะฑะพะปััะพะผ ััะฐััะบะต ะฒ ะบะพะฝัะต ะผะฐัััััะฐ ั 70 ะฟะพ 77
Summary
ะะตัะตะดะฐััะธะบ DRM ะฒ ั ะพะดะต ะธะทะผะตัะตะฝะธะน ะฟะพะพัะตัะตะดะฝะพ ะบะพะฝัะธะณััะธัะพะฒะฐะปัั ะฒ ะพะดะธะฝ ะธะท ะฒะพััะผะธ ะพัะฝะพะฒะฝัั ัะตะถะธะผะพะฒ, ะฟัะตะดััะผะพััะตะฝะฝัั ััะฐะฝะดะฐััะพะผ, ะพัะฝะพะฒะฐะฝะฝัั ะฝะฐ ะบะพะผะฑะธะฝะฐัะธัั :. ะะดะต ะ โ ะฝะฐะฟััะถะตะฝะฝะพััั ะฟะพะปั ะฟะตัะตะดะฐััะธะบะฐ ะฒ ัะพัะบะต ะฟัะธะตะผะฐ; U โ ะฝะฐะฟััะถะตะฝะธะต ะฝะฐ ะฒั ะพะดะต ะฟัะธะตะผะฝะธะบะฐ; ะ โ ะบะพัััะธัะธะตะฝั ะบะฐะปะธะฑัะพะฒะบะธ ะฐะฝัะตะฝะฝั (ะธะปะธ, ะฒ ะฐะฝะณะปะพัะทััะฝะพะน ะปะธัะตัะฐัััะต โ ะฐะฝัะตะฝะฝัะน ัะฐะบัะพั); L โ ะทะฐััั ะฐะฝะธะต ัะธะณะฝะฐะปะฐ ะฒ ะบะฐะฑะตะปะต ะผะตะถะดั ะฐะฝัะตะฝะฝะพะน ะธ ะฒััะพะบะพัะฐััะพัะฝัะผ ะฒั ะพะดะพะผ ะฟัะธะตะผะฝะธะบะฐ. ะะฝัะตะฝะฝัะน ัะฐะบัะพั ะทะฐะฒะธัะธั ะพั ัะฐััะพัั ะฟัะธะฝะธะผะฐะตะผะพะณะพ ัะธะณะฝะฐะปะฐ ะธ ะดะปั 50-ะพะผะฝัั ัะธััะตะผ ัะพะพัะฒะตัััะฒัะตั ะฒััะฐะถะตะฝะธั [15]:. ะะดะต f โ ัะฐััะพัะฐ ะฟัะธะฝะธะผะฐะตะผะพะณะพ ัะธะณะฝะฐะปะฐ (ะะั); Gi โ ััะธะปะตะฝะธะต ะฐะฝัะตะฝะฝั ะพัะฝะพัะธัะตะปัะฝะพ ะธะทะพััะพะฟะฝะพะณะพ ะธะทะปััะฐัะตะปั (ะดะ). ะฃัะธะปะตะฝะธะต ัะตัะฒะตัััะฒะพะปะฝะพะฒะพะน ััััะตะฒะพะน ะฝะตะฝะฐะฟัะฐะฒะปะตะฝะฝะพะน ะฐะฝัะตะฝะฝั ะพัะฝะพัะธัะตะปัะฝะพ Gi ัะพััะฐะฒะปัะตั 2,15 ะดะ, ัะฐะบะธะผ ะพะฑัะฐะทะพะผ, ะฐะฝัะตะฝะฝัะน ัะฐะบัะพั Kathrein K 51 16 4/510 351 ัะพััะฐะฒะปัะตั:. ะัะปะฐะฑะปะตะฝะธะต ัะธะณะฝะฐะปะฐ ะฒ ะบะฐะฑะตะปะต, ัะพะตะดะธะฝัััะตะผ ะฐะฝัะตะฝะฝั ะธ ะฒััะพะบะพัะฐััะพัะฝัะน ะฒั ะพะด ะฟัะธะตะผะฝะธะบะฐ, ะฑัะปะพ ะธะทะผะตัะตะฝะพ ะฐะฝะฐะปะธะทะฐัะพัะพะผ ยซRohde & Schwarzยป ZVL Vector Network Analyzer ะธ ัะพััะฐะฒะธะปะพ 0,49 ะดะ ะฝะฐ ัะฐััะพัะต 96 ะะั. ะ ะธัะบะพะผะพะต ะทะฝะฐัะตะฝะธะต ะฝะฐะฟััะถะตะฝะฝะพััะธ ะฟะพะปั ะดะปั ะธัะฟะพะปัะทัะตะผะพะณะพ ะธะทะผะตัะธัะตะปัะฝะพะณะพ ะบะพะผะฟะปะตะบัะฐ ัะฒัะทะฐะฝะพ ั ะฟะฐัะฐะผะตััะพะผ ะฝะฐะฟััะถะตะฝะธั ะฝะฐ ะฒั ะพะดะต ะฟัะธะตะผะฝะธะบะฐ ัะพะพัะฝะพัะตะฝะธะตะผ: ะ[(ะดะ(ะผะบะ/ะผ)] = U[(ะดะ(ะผะบะ)] + 8,18 (ะดะ(1/ะผ).
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