In order to provide security services in wireless sensor networks, a well-known task is to provide cryptographic keys to sensor nodes prior to deployment. It is difficult to assign secret keys for all pairs of sensor node when the number of nodes is large due to the large numbers of keys required and limited memory resources of sensor nodes. One possible solution is to randomly assign a few key...

We present preliminary experiments of an aerial deployment system for environmental sensors with autorotative soft-landing. Key problems associated with this task are discussed, including design of the sensor modules, release mechanism and telemetry system. We evaluate performance of the initial proof-of-concept system and show that this approach to sensor deployment is viable.

We present the concept of Deployment-Support Networks (DSN), a tool for the coordinated deployment of distributed sensor networks. A DSN supports the development, debugging, monitoring, and testing of sensor–network algorithms and applications. With our implementation of the DSN on the BTnode rev3 platform, we have proven that the concept scales well to a large number of nodes.

In sensor networks, secure communication among sensor nodes requires secure links and consequently secure key establishment. Due to resource constraints, achieving such key establishment is non-trivial. Recently some random key predistribution techniques have been proposed to establish pairwise keys. Some of these approaches assume certain deployment knowledge is available prior to deployment a...

Collaborative signal processing and sensor deployment have been among the most important research tasks in target tracking using networked sensors. In this paper, the mathematical model is formulated for single target tracking using mobile nonlinear scalar range sensors. Then a sensor deployment strategy is proposed for the mobile sensors and a nonlinear convergent filter is built to estimate t...