| 摘要 |
PURPOSE:To improve the frequency utilizing efficiency by using a signal subjected to correction of antenna parting distance to a timing signal synchronously with a spread code as a system synchronization reference to join and separate to/from the system optionally. CONSTITUTION:The spread codes of fixed stations 1a, 1b are synchronized and the communication is started and the signal is used as the system synchronization standard. In this case, the distance between transmission and reception antenna separating distance between the fixed stations 1a and 1b is corrected by a timing adjusting device 6. Thus, a fixed station joining newly the system constituted in this way joins the system at any time by matching the spread code with the system reference. Since no master and no slave station exists in remaining stations, even if one station stops its function due to a fault or damage, the remaining stations have the system synchronization reference and the remaining performance of the system still exists. When the station joined once to the system is parted once from the system and desires re-join, when the system synchronization is kept by a highly stable clock 13, it is possible to join the system again without synchronization. |
