| 摘要 |
FIELD: satellite communications engineering. SUBSTANCE: method involves following operations: signal for multiple- station access basing on frequency channel separation (MAFS) is shaped at working ground station, amplified, and relayed through satellite to base station; at the latter, signal is received, amplified, and converted into signal of multiple-station access basing on code signal separation (MACS); this signal is amplified and relayed through satellite to working stations where it is received and converted into subscriberÆs line signal and transmitted to subscriber. System implementing this method has working stations with small mirror diameter (1.5-2.0 m), base station with large mirror diameter (12.0 m), and low-energy artificial earth satellite that functions as relay station. Base station has antenna, low- noise amplifier, radio receiver, and MAFS signal processing section with output to telephone network, as well as transmitter. Newly introduced in base station are personal computer and n converters of MAFS and MACS signals. Receiver output is connected to inputs of converters; output of service-channel signal processing MAFS section is connected to personal computer input; output of converters is connected to transmitter input. Each of n working stations has MAFS signal shaper, transmitter, antenna, and low-noise amplifier whose input is connected to antenna, as well as radio receiver. Newly introduced in working stations are MACS service signal processing section, personal computer, working-channel MACS signal processing section, and recorders. Radio receiver output is connected to inputs of MACS signal processing sections of service and working channels; personal computer output is also connected to input of MAFS signal shaper. EFFECT: facilitated procedure, improved efficiency. 2 cl, 1 dwgD
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