Results 201 to 210 of about 32,791 (255)
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Science of the Total Environment, 2021
Anaerobic/aerobic/anoxic (AOA) is suitable for advanced nitrogen removal of low C/N wastewater as an energy-saving process. Investigations of the temperature impact on the AOA process are critical to its application in cold regions or seasons.
Xinjie Gao +4 more
semanticscholar +1 more source
Anaerobic/aerobic/anoxic (AOA) is suitable for advanced nitrogen removal of low C/N wastewater as an energy-saving process. Investigations of the temperature impact on the AOA process are critical to its application in cold regions or seasons.
Xinjie Gao +4 more
semanticscholar +1 more source
Optimal Sensor Placement for Target Localization Using Hybrid RSS, AOA and TOA Measurements
IEEE Communications Letters, 2020This letter investigates the optimal sensor placement strategy for single static target localization using the hybrid received-signal-strength (RSS), angle-of-arrival (AOA) and time-of-arrival (TOA) measurements on the 2-dimensional (2D) plane.
Sheng Xu
semanticscholar +1 more source
Three Passive TDOA-AOA Receivers-Based Flying-UAV Positioning in Extreme Environments
IEEE Sensors Journal, 2020In this paper, motivated by the fact that precisely positioning a flying unmanned aerial vehicle (UAV) by passive radio frequency (RF) measurements are being troubled by the extreme non-line-of-sight (NLOS) environments, we propose a 3D joint time ...
Chen Xu +4 more
semanticscholar +1 more source
Photonic approach for simultaneous measurement of microwave DFS and AOA.
Applied Optics, 2021A photonic scheme that can simultaneously estimate the microwave Doppler-frequency shift (DFS) and angle-of-arrive (AOA) is demonstrated. In the proposed system, the transmitted signal is independently mixed with two echo signals by a dual-channel ...
Jianing Zhao, Zhenzhou Tang, S. Pan
semanticscholar +1 more source
AOA Pseudolinear Target Motion Analysis in the Presence of Sensor Location Errors
IEEE Transactions on Signal Processing, 2020This paper presents new pseudolinear estimation algorithms for angle-of-arrival (AOA) target motion analysis when the sensor locations are not precisely known.
Feifei Pang +3 more
semanticscholar +1 more source
Water Research, 2020
Recent studies indicate that ammonia-oxidizing archaea (AOA) may play an important role in nitrogen removal by wastewater treatment plants (WWTPs). However, our knowledge of the mechanisms employed by AOA for growth and survival in full-scale WWTPs is ...
Yuchun Yang +9 more
semanticscholar +1 more source
Recent studies indicate that ammonia-oxidizing archaea (AOA) may play an important role in nitrogen removal by wastewater treatment plants (WWTPs). However, our knowledge of the mechanisms employed by AOA for growth and survival in full-scale WWTPs is ...
Yuchun Yang +9 more
semanticscholar +1 more source
Source Localization with AOA-Only and Hybrid RSS/AOA Measurements via Semidefinite Programming
2020 IEEE 23rd International Conference on Information Fusion (FUSION), 2020Angle of arrival (AOA) and received signal strength (RSS) measurements have been commonly used in wireless localization due to easy access and simple implementation. In this paper, we investigate source localization using the AOA-only and hybrid RSS/AOA measurements, respectively.
Qi Wang 0046, Zhansheng Duan, X. Rong Li
openaire +1 more source
A Performance Evaluation Framework for Direction Finding Using BLE AoA/AoD Receivers
IEEE Internet of Things Journal, 2020Bluetooth low energy (BLE) has been significantly contributed to the Internet of Things applications due to its advantages, such as low power consumption and scalability.
Cheng Huang +4 more
semanticscholar +1 more source
Calibrating the error from sensor position uncertainty in TDOA-AOA localization
Signal Processing, 2020The performance of unknown source localization degrades significantly when random sensor position errors exist. In this paper, a calibration source, whose position is known precisely or imprecisely, is introduced into the hybrid TDOA-AOA localization to ...
Fengrui Zhang, Yimao Sun, Q. Wan
semanticscholar +1 more source
TDAoA: A combination of TDoA and AoA localization with LoRaWAN
Internet of Things, 2020Location-based services are an essential aspect of many Internet of Things (IoT) applications. Due to low power requirements that these applications impose on their end devices, classic GNSS solutions are replaced by wireless localization via Low Power ...
Michiel Aernouts +3 more
semanticscholar +1 more source