Accession Number : AD0164138

Title :   Ground Station System for Retransmitting Satellite Facsimile Signals over Digital Data Links.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Peterson,Reeve D.

Report Date : 18 JUL 1972

Pagination or Media Count : 5

Abstract : The patent describes a ground station system for digitally processing automatic-picture-transmission (APT) pictures transmitted by earth-or-biting satellites whereby the processed pictures can be retransmitted over a digital data link to other remote receiving stations. At the transmit end of the system, APT pictures in the form of facsimile signals from satellites are sampled and gray-shade level quantized to produce a serial bit stream. The bit stream is re-transmitted over a digital data link to receiving stations where the received bit stream is suitably processed to thereby convert it to facsimile signals identical to the ones received directly from the satellite.

Descriptors :   (*Facsimile equipment, *Patents), Data links, Digital systems, Processing equipment, Analog to digital converters, Converters, Automatic, Stations, Retransmission, Facsimile transmission

Subject Categories : Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE