Sensor Node Localization Using Mobile Acoustic Beacons

The textbook "Sensor Node Localization Using Mobile Acoustic Beacons" by Manish Kushwaha provides a comprehensive examination of an innovative method for localizing sensor nodes using mobile acoustic beacons. This monograph describes a passive technique where the sensor nodes do not need to generate their own acoustic signals for distance measurement. This leads to cost savings, reduced energy consumption, and allows for discreet operation. The beacons are capable of producing significantly higher acoustic energy than resource-constrained sensor nodes, greatly increasing the range. The proposed method utilizes a linearly frequency-modulated signal that can be accurately captured through appropriate filtering, resulting in longer range and higher accuracy compared to existing technologies. The localization algorithm has been specifically developed for acoustically reverberant environments, such as urban areas, and can effectively handle non-Gaussian distance errors caused by echoes. The calculation of node locations is performed centrally by solving a global nonlinear optimization problem in an iterative and incremental manner.