blind zone

blind zone
i . In radar, it refers to the direction from which echoes cannot be received. This results from objects getting in the way of radar signals.
ii. In communications system, it is an area or direction from which signals cannot be received or to which messages cannot be transmitted. In HF (high frequency) communications, it is the arc between the transmitter and the point where the sky wave meets the ground at the first instance. In VHF (very high frequency) and UHF (ultra-high frequency) communications, buildings or hills can create blind zones.
iii. The portions of the airport not visible from the control tower. See also blind spot.

Aviation dictionary. 2014.

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  • blind zone — tylos sritis statusas T sritis radioelektronika atitikmenys: angl. blind area; blind zone; dead zone vok. Schaltengebiet, n; Totzone, f rus. зона молчания, f; мёртвая зона, f pranc. zone de silence, f; zone morte, f …   Radioelektronikos terminų žodynas

  • blind area — tylos sritis statusas T sritis radioelektronika atitikmenys: angl. blind area; blind zone; dead zone vok. Schaltengebiet, n; Totzone, f rus. зона молчания, f; мёртвая зона, f pranc. zone de silence, f; zone morte, f …   Radioelektronikos terminų žodynas

  • zone de silence — tylos sritis statusas T sritis radioelektronika atitikmenys: angl. blind area; blind zone; dead zone vok. Schaltengebiet, n; Totzone, f rus. зона молчания, f; мёртвая зона, f pranc. zone de silence, f; zone morte, f …   Radioelektronikos terminų žodynas

  • zone morte — tylos sritis statusas T sritis radioelektronika atitikmenys: angl. blind area; blind zone; dead zone vok. Schaltengebiet, n; Totzone, f rus. зона молчания, f; мёртвая зона, f pranc. zone de silence, f; zone morte, f …   Radioelektronikos terminų žodynas

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