Friday, March 26, 2010

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Advances in wireless communications, digital electronics and micro-electro-mechanical system (MEMS) technology have enabled the development of low-cost, low-power, multifunctional sensor nodes that are small in size and communicate in short distances cheap nike shoes. These tiny sensor nodes which consist of sensing, data processing, and communicating north face jackets components, leverage the idea of wireless sensor networks based on northface jackets collaborative effort of a large number of nodes. There are many potential applications of sensor nodes of cheap womens nike shoes wireless sensor networks: military surveillance, environmental monitoring, traffic surveillance, medical treatment, building and structures monitoring, even anti-terrorism, etc.cheap men's nike shoes Localization technology is one of the supporting technologies about the wireless sensor network. For the constraints in power, cost and size of sensor nodes, the self-localization techniques meet new requirements and challenges. Besides according with basic accuracy requirement, the localization algorithm must be practicable, straightforward and with low-power. This thesis focuses on the problem of self-localization in WSN and makes thorough discussion and research of it. The concrete content is as follows:1. The basic concept of wireless sensor networks, its framework, characteristics and development history and key technologies are summarized.
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