| To meet the application requirements of low costs and fast networking without center station, Wireless Communications& EMC Laboratory of BUPT presents a kind of SCPC-TDMA(Single Channel per Carrier-Time Division Multiple Access) satellite earth station's networking method,with the performance of high utilization efficiency of satellite transponder and large system capacity. The contents of this thesis are analyzing this method's characteristics,implementing this method on Linux and testing it.SCPC-TDMA satellite earth station's networking method has the features of low costs,flexible networking,high utilization efficiency of satellite transponder and large system capacity. The characteristics of low costs reflect in applying for only one carrier, simple ground stations and the same hardware configuration of center station and other ground stations;the characteristics of flexible networking reflect in electing the center station during the initial establishement of the satellite communication network, joining and leaving the network of the center station during the normal operation of the network;and the characteristics of high utilization efficiency of satellite transponder and large system capacity mainly reflect in satellite transponder's working near saturation point, as a result of TDMA access mode's no intermodulation interference.In this paper, on the basis of introduction and analysis to existing satellite earth stations'networking methods,SCPC-TDMA satellite earth station's networking method which meets the application requirements and performance requirements is extracted;Then,the characteristics of this networking method and its implementation on Linux are focused on; Lastly, we successfully complete the networking method's test on ARM9 embedded Linux platform,and verify the SCPC-TDMA satellite earth station's networking method's correctness,feasibility,flexibility in network and its different aspects from existing networking methods. |
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