| Motivated by the increasing request of providing the battlefield data dissemination and communications relay, we presents the design of an aerial vehicle platform's applications of tactical communications for providing beyond-line-of-sight(BLOS) communications capability. Providing a description of the aerial vehicle platform's development, we conduct a deeply study on the wireless asymmetric data link structure, communication protocols and the algorithm of data dissemination. and carried on the system to emulate.The main works can be summarized as follows.1.The transfer architecture of the aerial vehicle's BLOS communication is studied. Based layered structure, we studied a five layer data link model, which includes mac layer, ip layer and tcp layer.etc.and the function that each layer have.2.A wireless asymmetric physical layer link model is studied. To meet the requirement of the information service priority, we presented a dynamic priority scheduling algorithms, which working on the order programming mode, can improve the efficiency of the asymmetric broadcast channel.3.The problems of wireless asymmetric network applications using the original TCP/IP as system transport layer protocols is studied and analyzed.We consider the Round-trip time(RTT) with the physical layer and the transfer layer combined together. Physical layer using RTT related to the channel state and transfer layer using the constant RTT, the interference between the two layers can be eliminated, and so the effectiveness of the wireless data link can be enhanced. The grouping of IP layer.Addressing precept and the routing arithmetic under many networks is studied.4.The simulation software OPNET is introduced, the modeling of wireless channel is illuminated.5.A wireless asymmetric data link structure model is studied. Building up the model of the aerial vehicle node.CGS node and the estate transfers diagram and the application layer operation configuration used in simulation. |
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