Recently, Wireless Sensor networks become one of the most widely used form of ad-hoc networks that has a countless number of applications in our life. Due to the unreliable communication medium and the failure prone sensors, coverage is an important functional property of a sensor network. Coverage is represented as a function of sensor density, which in turn depends on sensing range and the de...

In this paper, we study the deployment issue of a wireless sensor network. We address the following problem: given the required lifetime of a sensor network, the initial energy of each sensor node, and the area to be covered, what is the minimum number of nodes needed to construct such a network and what is the corresponding deployment scheme? Finding an efficient deployment scheme involves loc...

WSN is a group of low-cost, lowpower, multifunctional and small size wireless sensor nodes that work together to sense the environment, perform simple data processing and communicate wirelessly over a short distance. In most current designs, sensors are randomly or uniformly distributed because of their simplicity. However, the node deployment has a great impact to the wireless systems. In this...

ZigBee is an emerging wireless network technology, according to china’s digital agricultural feature such as remote, dispersion, variability and diversity, the ZigBee-based wireless sensor network for digital agricultural data acquisition is one of the best ways to build the system. In this paper, based on ZigBee wireless sensor network deployment planning principles and the status of our digit...

WSN consists of a large number of tiny sensor nodes distributed over a large area with one or more powerful sinks or base stations collecting information from these sensor nodes. The sensor nodes are equipped with battery and whose battery cannot be replaced after deployment. Therefore, deployment of sensor nodes has serious impact on network lifetime. Deployment can be random or pre-determined...

With the scale expands, traditional deployment algorithms are becoming increasingly complicated than before, which are no longer fit for sensor networks. In order to reduce the complexity, we propose a node deployment algorithm based on viscous fluid model. In wireless sensor networks, sensor nodes are abstracted as fluid particles. Similar to the diffusion and self-propagation behavior of flui...

Distributed sensor networks (DSNs) are a key part of the surveillance and reconnaissance infrastructure in any modern military system. DSNs offer several important benefits, such as ease of deployment, responsiveness to battlefield situations, survivability, agility and easy sustainability. These benefits make DSNs a lethal weapon for the US army, providing it with high quality of surveillance,...