Low‐Temperature Initiation Enhances HCN and NH3 Formation From Methane and NO Over Pt/Al2O3
Chemistry – A European Journal, Volume 32, Issue 24, 23 June 2026.Hydrogen cyanide (HCN) was formed from CH4 and NO over Pt/Al2O3 at low temperatures. Increasing NO concentration and optimizing reaction‐start conditions significantly enhanced HCN yield. In situ FTIR and DXAFS measurements revealed that dynamically balancing Pt‑CO and Pt‑CN surface species, particularly their desorption under temperature‑swing ...
Emika Yamashita +3 more
wiley +1 more source
High-Precision Indoor Localization via Dual-Modal AOA/TOA Fusion with Deep Learning and Particle Filters [PDF]
RadioengineeringAs the era of IoT and artificial intelligence advances, the demand for high-precision indoor positioning systems continues to grow. Achieving accurate positioning in indoor environments remains challenging due to the presence of obstacles and signal ...
X. Yao, Z. Xu, F. Qiang
doaj
Artificial Neural Network for Location Estimation in Wireless Communication Systems
Sensors, 2012 In a wireless communication system, wireless location is the technique used to estimate the location of a mobile station (MS). To enhance the accuracy of MS location prediction, we propose a novel algorithm that utilizes time of arrival (TOA ...
Chien-Sheng Chen
doaj +1 more source
Research on indoor positioning system algorithm based on UWB technology
Measurement: SensorsUltra wideband (UWB) indoor positioning technology is attracting significant attention in the present realm of indoor wireless positioning technology due to its numerous advantages, including low energy consumption, exceptional wireless transmission ...
Weimin Ma +3 more
doaj +1 more source
Geometrical statistical channel model with an Inverted-Parabolic spatial distribution
Tongxin xuebao, 2014 Due to the complexity of calculation for the parameters of angle of arrival(AOA),time of arrival(TOA) and Dopplerspectra(DS),etc.,a proper geometrical statistical channel model was proposed with inverted-parabolic spatial distribution around mobile ...
Jie ZHOU, Dong-dong XU, Kikuchi HISAKAZU
doaj +2 more sources
Robust Indoor Positioning with Smartphone by Utilizing Encoded Chirp Acoustic Signal
SensorsRecently, indoor positioning has been one of the hot topics in the field of navigation and positioning. Among different solutions on indoor positioning, positioning with acoustic signals has its promise due to its relatively high accuracy in the line of ...
Bingbing Cheng, Ying Huang, Chuanyi Zou
doaj +1 more source
Fingerprint localization based on hybrid TOA, AOA, and RSS measurements
Discover Applied SciencesThis paper presents a novel joint TOA-AOA-RSS fingerprint localization method aimed at reducing the necessity for collecting extensive fingerprint data for database construction.
Shuiwei Liu, Lei Tang, Zhangsheng Wang
doaj +1 more source
An indoor positioning system based on distributed LTE network
Dianxin kexue, 2018 Indoor positioning technology has important applications in the business and security fields,but there are still existing problems with low positioning accuracy and high deployment costs.An indoor positioning system based on long term evolution ( LTE ...
Yu YANG, Ming CHEN, Daqing LIU
doaj +2 more sources
Time of Arrival (TOA) Based Radiolocation Architecture in CDMA Systems and Its Performance Analysis
International Journal of Computer and Communication Engineering, 2018 Abir Ahmed +3 more
openaire +1 more source
When Does a Spin Flip? Arrival Time Distributions and Information Propagation in Discrete Quantum Systems. [PDF]
Entropy (Basel)Martellini L.
europepmc +1 more source