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We consider the problem of inferring the operational status of a reactor facility using measurements from a radiation sensor network deployed around the facility's ventilation off-gas stack. The intensity of stack emissions decays with distance, and the sensor counts or measurements are inherently random with parameters determined by the intensity at the sensor's location. We utilize the measurements...
Coverage is an important metric used to measure the quality of service of wireless sensor networks monitoring a field of interest (FoI). Existing literature on the coverage problem assumes that the sensors are deployed directly in the FoI. These results cannot be applied in some applications like canal water surface monitoring, because the sensors cannot be deployed on the water surface. In this paper,...
Coverage is an important metric used to measure the quality of service of three-dimensional wireless sensor networks (3D WSNs) monitoring a field of interest (FoI). While it is important to ensure the desired level of coverage, it is also necessary to do so with a minimum number of sensors from a network cost perspective. In this paper, we assume that the sensors are deployed at random uniformly in...
An important issue of research in a dense and random deployment of a wireless sensor network (WSN) is to maintain the coverage of the field and yet minimise the energy consumed by the sensors. Some monitoring applications may require only partial coverage of the field in which case redundant sensors can be identified and scheduled to sleep to minimise the energy consumption. In this paper, we address...
We consider the problem of detecting a propagative source amidst background levels based on passive sensor measurements. The source intensity decays with distance according to a known functional form, and the sensor measurements are random with parameters determined by the intensity at the sensor location and the capture area of the sensor. It is generally expected that a collection of sensors offers...
We consider a networked system of sensors that measure the intensity of a source amidst background inside a two-dimensional monitoring area. The source intensity decays away from it, and the corresponding sensor measurements are random with a parameter determined by the intensity at sensor location. The detection problem is to infer the presence of a source based on measurements. Under a statistical...
We consider a network of sensors that measure the scalar intensity due to the background or a source combined with background, inside a two-dimensional monitoring area. The sensor measurements may be random due to the underlying nature of the source and background or due to sensor errors or both. The detection problem is infer the presence of a source of unknown intensity and location based on sensor...
We consider a detection network of sensors that measure intensity levels due to a source amidst background inside a two-dimensional monitoring area. The source intensity decays away from it possibly in discrete jumps, and the corresponding sensor measurements could be random due to the nature of source and background, or due to sensor errors, or both. The detection problem is to infer the presence...
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