| 摘要 |
FIELD: communications. ^ SUBSTANCE: system has satellites, set on circular stationary orbit with antennae mounted on them as well as relay stations, and their ground-based stations. Including central communications control system, satellites control station and subscriber stations, relay station is made in form of serially connected low-noise amplifiers, connected to each receiving narrow-direction antenna, remotely controlled downward converters, amount of which matches number of frequencies bands, and which are separated exclusively for frequencies band zones, intermediate frequency accelerators and remotely controlled upward converters. ^ EFFECT: not only stationary communications subscribers can access broadband channels, but also mobile subscribers. ^ 2 cl, 10 dwg |
