WiBall: A Time-Reversal Focusing Ball Method for Decimeter-Accuracy Indoor Tracking
نویسندگان
چکیده
منابع مشابه
Pulse Harmonia: Decimeter-Scale Tracking of Small Indoor Objects
We present Pulse Harmonia, a real-time RF localization system which targets massand power-constrained mobile robotics systems. Pulse Harmonia is an ultra-wideband location system which achieves decimeter-level accuracy built using only commodity components. Pulse Harmonia tags transmit ultra-wideband pulses using the step recovery effect of common RF BJT transistors therefore making them inexpe...
متن کاملTime-variant Adaptive Passive Time Reversal Equaliser and a Perspective for Environmental Focusing Method
High digital data throughput in Underwater Acoustic Communications (UAComm) is a challenging subject, specially in shallow water where the channel is a wave-guide causing multipath propagation and where Doppler effect usually occurs due to relative source-receiver motion jointly to ocean dynamics. The source and receiver sensors can be used for telemetry in point-to-point underwater communicati...
متن کاملTime-Reversal Optical Focusing for Biophotonics Applications
I will discuss our recent work on the use of digital optical phase conjugation and ultrasound tagging to accomplish timereversal deep tissue optical focusing for fluorescence imaging and other applications. KEYWORD LIST phase-conjugation, optical time-reversal, deep-tissue imaging One of the primary challenges in biophotonics is that it is not possible to focus light tightly in deep tissues usi...
متن کاملWIPP: Wi-Fi Compass for Indoor Passive Positioning with Decimeter Accuracy
Abstract: In recent decades, the proliferation of smart phones, tablets, and wireless networks has fostered a growing interest in indoor passive positioning. The Wi-Fi-based passive positioning systems can provide Location-Based Services (LBSs) to the third party such as market and security departments. Most of the existing systems are based on the Receive Signal Strength Indication (RSSI) info...
متن کاملOptimization of time reversal focusing through deconvolution
In this study a technique is demonstrated to optimize the ability of time reversal to both spatially and temporally focus, or compress, elastic wave energy. This method allows for optimization of time reversal focusing for any number of channels by calculating the required time reversed signal to be rebroadcast from the time reversal mirror element using only the original recorded scattered sig...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Internet of Things Journal
سال: 2018
ISSN: 2327-4662,2372-2541
DOI: 10.1109/jiot.2018.2854825