本文選題：NS仿真 + 延遲容忍網(wǎng)絡(luò)�。� 參考：《鐵道學(xué)報(bào)》2017年04期

【摘要】：在NS2衛(wèi)星模塊的基礎(chǔ)上,借助衛(wèi)星模擬工具STK,實(shí)現(xiàn)多層衛(wèi)星網(wǎng)絡(luò)與地月衛(wèi)星網(wǎng)絡(luò)的仿真環(huán)境搭建。通過增加MEO星座以及相關(guān)星間鏈路,實(shí)現(xiàn)LEO、MEO、GEO之間多層衛(wèi)星網(wǎng)絡(luò);通過增加GEO衛(wèi)星、繞月衛(wèi)星、月面終端以及對(duì)應(yīng)鏈路,實(shí)現(xiàn)GEO衛(wèi)星、繞月衛(wèi)星以及月面終端之間的互聯(lián)互通。在該環(huán)境的基礎(chǔ)上,設(shè)計(jì)多種仿真場(chǎng)景并進(jìn)行測(cè)試。通過與單層低軌道衛(wèi)星對(duì)比,說明多層衛(wèi)星網(wǎng)絡(luò)能有效減小中繼時(shí)延。通過與STK仿真結(jié)果進(jìn)行比較,驗(yàn)證新增的地月系統(tǒng)的合理性,基于"天鏈一號(hào)"中繼系統(tǒng)設(shè)計(jì)數(shù)據(jù)中繼和地月通信場(chǎng)景,說明長(zhǎng)時(shí)延的通信場(chǎng)景中DTN協(xié)議能夠提高網(wǎng)絡(luò)吞吐量,結(jié)果表明仿真環(huán)境設(shè)計(jì)有效合理。
[Abstract]:On the basis of NS2 satellite module, the simulation environment of multi-layer satellite network and earth-moon satellite network is built with the aid of satellite simulation tool STK. By adding the MEO constellation and related intersatellite links, the multilayer satellite network between Leo and MEOOGEO can be realized, and the interconnection among GEO satellites, lunar satellites and lunar terminals can be realized by adding GEO satellites, lunar terminals and corresponding links. Based on this environment, a variety of simulation scenarios are designed and tested. Compared with single layer low orbit satellite, it is proved that multilayer satellite network can effectively reduce relay delay. By comparing with the simulation results of STK, the rationality of the new ground-moon system is verified. Based on the "Tianchain-1" relay system, the data relay and ground-moon communication scenarios are designed. It is shown that the DTN protocol can improve the network throughput in the communication scenarios with long delay. The results show that the simulation environment design is effective and reasonable.
【作者單位】： 北京交通大學(xué)電子信息工程學(xué)院;
【基金】：國(guó)家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)(2015AA015702) 國(guó)家自然科學(xué)基金(61271202) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金(W16JB00270)
【分類號(hào)】：TN927.2

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