### Distributed robotic sensor networks: An information-theoretic approach

@article{julian_distributed_2012,
title = {Distributed robotic sensor networks: {An} information-theoretic approach},
volume = {31},
issn = {0278-3649, 1741-3176},
shorttitle = {Distributed robotic sensor networks},
url = {http://journals.sagepub.com/doi/10.1177/0278364912452675},
abstract = {In this paper we present an information-theoretic approach to distributively control multiple robots equipped with sensors to infer the state of an environment. The robots iteratively estimate the environment state using a sequential Bayesian ﬁlter, while continuously moving along the gradient of mutual information to maximize the informativeness of the observations provided by their sensors. The gradient-based controller is proven to be convergent between observations and, in its most general form, locally optimal. However, the computational complexity of the general form is shown to be intractable, and thus non-parametric methods are incorporated to allow the controller to scale with respect to the number of robots. For decentralized operation, both the sequential Bayesian ﬁlter and the gradient-based controller use a novel consensus-based algorithm to approximate the robots’ joint measurement probabilities, even when the network diameter, the maximum in/out degree, and the number of robots are unknown. The approach is validated in two separate hardware experiments each using ﬁve quadrotor ﬂying robots, and scalability is emphasized in simulations using 100 robots.},
language = {en},
number = {10},
urldate = {2021-02-21},
journal = {The International Journal of Robotics Research},
author = {Julian, Brian J and Angermann, Michael and Schwager, Mac and Rus, Daniela},
month = sep,
year = {2012},
keywords = {DIstributed Bayesian Filtering, Distributed Estimation, Information Gathering, Multi-Robot Systems, Optimization and Optimal Control},
pages = {1134--1154},
month_numeric = {9}
}