| 摘要 |
A method for transmitting a signal for the transfer of information from a signal source (1) to a signal sink (7) spatially remote therefrom wherein, at least over a part of the path between the signal source and the signal sink, the signal is transmitted as an optical signal over at least one free optical link between an optical transmitter (3) and an optical receiver (5), is characterised in that prior to its transmission the signal to be transmitted is split into signal packets (SP), that each signal packet is assigned a signal sequence (OH) characteristic of the signal packet and is transmitted together with the relevant signal packet at a higher bit rate than the original signal, and that the characteristic signal sequences are used to detect, and optionally correct, errors in the transmitted signal and/or to synchronise the transmission path. In this way a reliable transmission of optical signals through free space can be ensured using very simple means.
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