| 摘要 |
A method of communication between several ground stations and a transponder satellite by time-division multiple access (TDMA) operation, which comprises combining the time-multiplexed and preambled signal bursts of the individual ground stations to a transponder time-division pulse frame; regulating in a reference station the real time position of the station burst in the pulse frame relative to the burst datum phase, deriving the regulating criteria from the pulse frame arriving at the reference station by storing the burst datum position in a burst-position memory and comparing the stored datum position with the burst real position in the arriving pulse frame. This results in a phase-error correction signal which is used for correction of the transmitting phase of the burst issuing from the station. More specifically the regulating criteria are obtained by blocking the regulation (in a main regulating circuit) of the burst transmitting phase toward the transmitting side of the reference station and then restoring the regulation (in an auxiliary regulating circuit) through the burst-position memory of the burst datum phase transmitter to derive therefrom an error signal and transferring to a further memory the error data previously stored into the burst position memory (V-RS1) during the course of a regulating operation. This further memory adds the phase error data over a number of consecutive pulse frames to provide an averaged phase error correction signal from the sum of the error data. The memories are preferably of digital binary type. |
