| Tactical Internet (TI) is a special network which derives from mobile ad hoc network and mainly applies in battlefield. Its inherent characteristics of self-organization, mobility and anti- destruction settles its inevitability of being battlefield information infrastructure, and holds more and more attention. However, due to dynamic network topology, adopting wireless communication, distributed self organization, deployed on the frontier of battlefield and so on, TI is confronted with much more serious threats of enemies'attacks. The main work is to achieve solution of how to establish secure cluster in foreland.Basing on research of network characteristics and architecture of tactical internet, this dissertation analyzes the security threatens of tactical internet and demands of cluster algorithm, finds out the actual states domestic and overseas, institutes security goal of clustering algorithm, and proposes a design frame of secure clustering algorithm in TI.At the basis of research on trust theory, the relationship between security and trust is analyzed, and then, a trust management scheme basing on identity grades which contains feedback is proposed. Moreover, some correlative technology is studied and mechanisms of feedback and monitor are applied in trust management.A new secure clustering algorithm is proposed basing on research of trust management and secure-correlation techniques, in which the cluster heads are elected according to trust degree and mobility.At last, simulation experiments of our clustering algorithm are implied in NS2 environment. The results show that our algorithm satisfies the expectation of security, usabil. |
