Multiple Access Chirp-Based Ultrasonic Positioning - IEEE Xplore
2017年8月24日 · Distance-based ultrasonic positioning systems (UPSs) using trilateration have been adopted in various types of applications across a wide variety of fields. Recently, the use of a chirp signal in conjunction with cross correlation has drawn a considerable amount of attention for UPSs.
Ultrasonic Array-Based Multi-Source Fusion Indoor Positioning
2024年10月15日 · The ultrasonic positioning system described in this paper utilizes a trilateration algorithm with three ultrasonic sensors for positioning. However, three sensors may be insufficient to cover the entire localization area.
Asynchronous Ultrasonic Trilateration for Indoor Positioning of …
In this paper we present and evaluate the accuracy of our asynchronous trilateration method (Lok8) for mobile positioning without requiring knowledge of the time the ultrasonic signal was sent. This approach shows that only the differences in time of arrival to multiple microphones (control points) placed throughout the indoor environment is ...
A Novel 3D Multilateration Sensor Using Distributed Ultrasonic
2016年10月8日 · In this paper, a novel sensor grid using 40 KHz ultrasonic transmitters is presented for adoption in indoor 3D positioning applications. In the proposed technique, a vehicle measures the arrival time of incoming ultrasonic signals and calculates the position without broadcasting to the grid.
Indoor Positioning for Smartphones Using Asynchronous …
2013年5月3日 · Ultrasound trilateration was identified as a very promising approach for indoor mobile positioning. Signals travelling at the speed of sound offer very good accuracy, well below one meter, even with standard smartphone speaker hardware.
Ultrasonic Trilateration Methods for Low-Cost Indoor Positioning
Trilateration is a process where distances to known control points or beacons can be used as inputs to algorithms to calculate an object’s position. Most of the common trilateration methods known are fast and reliable, and based on estimating one or more location-dependent signal parameters like Times-of-arrival (TOA), Angle of Arrival (AOA ...
evaluate the accuracy of our asynchronous trilateration method (Lok8) for mobile positioning without requiring knowledge of the time the ultrasonic signal was sent. This approach shows that only the differences in time of arrival to multiple microphones (control points) placed throughout the indoor environment is sufficient.
Characterization of an Ultrasonic Local Positioning System for 3D ...
2020年5月14日 · It uses a linear ultrasonic chirp and the phase correlation approach to determine the corresponding TOAs, together with a spherical trilateration technique to calculate the position estimates.
Indoor Positioning for Smartphones Using Asynchronous …
2013年6月27日 · In this paper we present an accurate indoor positioning approach for commercial off-the-shelf (COTS) smartphones that uses the innate ability of mobile phones to produce ultrasound, combined with...
Fusion localization for indoor airplane inspection using visual ...
2023年10月23日 · In this paper, we propose the fusion of an ultrasonic trilateration-based RTLS with the visual inertial odometry (VIO) within a hanger.