We consider periodic sensor scheduling in this paper. A system is observed by two sensors. The two sensors communicate their datawith a remote state estimator via a bandwidth-limited networkwhich allows only one sensor to send its data at each time. We derive the optimal duty cycle pair and a corresponding sensor data schedule to minimize the trace of the average estimation error covariance. Si...

Wireless ad-hoc sensor networks have emerged as an interesting and important research area in the last few years. They rely on sensor devices deployed in an environment to support sensing and monitoring, including temperature, humidity, motion, acoustic, etc. Low cost and miniaturization of sensors involve limited computational resources, power and communication capacities. Consequently, wirele...

A methodology is developed to deploy a mobile sensor network for the purpose of detecting and capturing mobile targets in the plane. The sensing-pursuit problem considered in this paper is analogous to the Marco Polo game, in which a pursuer Marco must capture multiple mobile targets that are sensed intermittently, and with very limited information. The competing objectives exhibited by this pr...

Real robots with real sensors are not omniscient. When a robot's next course of action depends on information that is hidden from the sensors because of problems such as occlusion, restricted range, bounded eld of view and limited attention, we say the robot suuers from the hidden state problem. State identiication techniques use history information to uncover hidden state. Previous approaches ...

recently different approaches have been developed in the field of sensor fault diagnostics based on auto-associative neural network (aann). in this paper we present a novel algorithm called self reconstructing auto-associative neural network (s-aann) which is able to detect and isolate single faulty sensor via reconstruction. we have also extended the algorithm to be applicable in multiple faul...

double layer zno/sno2 thin film resistive gas sensors were fabricated by successive pvd of those oxides onto porcelain substrates. the metallic contacts were provided by electron beam evaporation of platinum onto substrates prior to deposition of the gas sensitive layers. deposits were thermally annealed at different temperatures. it was shown that the activation energy of electrical conduction...

We suggest a control mechanism for leading a team of mobile, oblivious, identical and indistinguishable agents in desired directions. The agents are assumed to have a compass, i.e. a common North direction, and bearing only sensing within a limited visibility range, and may receive a direction-control broadcast with some given probability. We prove that, under the suggested control mechanism, t...

In wireless sensor networks, sensor nodes collect plenty of data for each time period. If all of data are transmitted to a Fusion Center (FC), the power of sensor node would run out rapidly. On the other hand, the data also needs a filter to remove the noise. Therefore, an efficient fusion estimation model, which can save the energy of the sensor nodes while maintaining higher accuracy, is need...

It is well known that clutter (spectral interference) from atmospheric constituents can be a severe limit for spectroscopic point sensors, especially where high sensitivity and specificity are required. In this paper, we will show for submillimeter/terahertz (SMM/THz) sensors that use cw electronic techniques the clutter limit for the detection of common target gases with absolute specificity (...

We analyse a gathering process for a group of mobile robotic agents, identical and indistinguishable, with no memory and no common frame of reference (neither absolute location nor a common orientation). The agents are assumed to have bearing only sensing within a limited visibility range. We prove that such robots can gather to a small disk in the R-plane within a finite expected number of tim...