Direct-broadcast satellite 广播卫星
(重定向自Direct broadcasting satellite)
Direct-broadcast satellite (DBS) is a type of artificial satellite which usually sends satellite television signals for home reception.
The type of satellite television which uses direct-broadcast satellites is known as direct-broadcast satellite television (DBSTV) or direct-to-home television (DTHTV). This has initially distinguished the transmissions directly intended for home viewers from cable television distribution services that are sometimes carried on the same satellite. The term DTH predates DBS and is often used in reference to services carried by lower power satellites which required larger dishes (1.7 m diameter or greater) for reception.