Real-time obstacle avoidance for manipulators and mobile robots
International Journal of Robotics Research
Art gallery theorems and algorithms
Art gallery theorems and algorithms
Grid Coverage for Surveillance and Target Location in Distributed Sensor Networks
IEEE Transactions on Computers
Self-orienting wireless multimedia sensor networks for occlusion-free viewpoints
Computer Networks: The International Journal of Computer and Telecommunications Networking
On coverage issues in directional sensor networks: A survey
Ad Hoc Networks
A new coverage improvement algorithm based on motility capability of directional sensor nodes
ADHOC-NOW'11 Proceedings of the 10th international conference on Ad-hoc, mobile, and wireless networks
The coverage problem in directional sensor networks with rotatable sensors
UIC'11 Proceedings of the 8th international conference on Ubiquitous intelligence and computing
Distributed coverage-enhancing algorithms in directional sensor networks with rotatable sensors
ICDCN'12 Proceedings of the 13th international conference on Distributed Computing and Networking
A hybrid optimisation algorithm for coverage enhancement in 3D directional sensor networks
International Journal of Sensor Networks
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Wireless multimedia sensor networks (WMSNs) differ from the traditional wireless sensor networks (WSNs) due to their characteristic of directivity. In this work, by analyzing the virtual potential field-based algorithm, which can not really describe the coverage overlap of the node, we propose an electrostatic field- based coverage-enhancing algorithm (EFCEA). Firstly, we build the virtual field and grid in the sense sector and define the grid's number covered by every neighbor as charge and calculate the correlation degree of every neighbor for all sensors. Secondly, redundant sensors are shut off if their gird are wholly covered and waked up according to correlation degree to 'die out' sensor, coverage of networks can be enhanced although large numbers of redundant sensors are shut off by their 'centroid' point revolving round the sensor under the repel force based electrostatic field. Simulation results are presented for demonstrating the effectiveness of our approach.