Indoor Acoustic Localization

Until now, in the satellite-denied environment, there is no mature and stable universal solution for high-precision Location Based System (LBS) similar to the Global Navigation Satellite System, making it still an open field. Near-ultrasonic positioning, as an emerging medium-range positioning technology, has natural advantages such as low synchronization costs, strong compatibility with smart devices, independence from image acquisition, and signals that are not easily obstructed by rooms, making it an optimal solution for low-cost, high-precision safety positioning. This chapter focuses on positioning in the practical and complex satellite-denied environments, based on portable smart terminal platforms, leveraging the complementary advantages of near-ultrasonic and inertial navigation technologies. It combines positioning data with theoretical and practical requirements for training privacy-secure solutions, aiming to provide novel and practical robust positioning schemes. By diverging from conventional electromagnetic wave-based methods for indoor positioning, it offers innovative perspectives and approaches.