Results 31 to 40 of about 1,941 (196)

Robust and sparse M-estimation of DOA

Signal Processing, 2023
A robust and sparse Direction of Arrival (DOA) estimator is derived for array data that follows a Complex Elliptically Symmetric (CES) distribution with zero-mean and finite second-order moments. The derivation allows to choose the loss function and four loss functions are discussed in detail: the Gauss loss which is the Maximum-Likelihood (ML) loss ...
Christoph F. Mecklenbräuker, Peter Gerstoft, Esa Ollila, Yongsung Park   +3 more
openaire   +3 more sources

Fast ambiguous DOA elimination method of DOA measurement for hybrid massive MIMO receiver

Science China Information Sciences, 2022
DOA estimation for massive multiple-input multiple-output (MIMO) system can provide ultra-high-resolution angle estimation. However, due to the high computational complexity and cost of all digital MIMO systems, a hybrid analog digital (HAD) structure MIMO was proposed.
Baihua Shi, Xinyi Jiang 0001, Nuo Chen 0005, Yin Teng, Jinhui Lu, Feng Shu 0002, Jun Zou 0001, Jun Li 0004, Jiangzhou Wang   +8 more
openaire   +2 more sources

Aerosol Measurements over India: Comparison of MAX-DOAS Measurements with Ground-based (AERONET) and Satellite-based (MODIS) Data

Aerosol and Air Quality Research, 2023
In this study, we present ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements of aerosols from two urban locations (Delhi and Pune) and one high-altitude rural location (Mahabaleshwar) in India.
Prithviraj Mali, Mriganka Sekhar Biswas, Steffen Beirle, Thomas Wagner, Shrivardhan Hulswar, Swaleha Inamdar, Anoop S. Mahajan   +6 more
doaj   +1 more source

Estimation of NO_x emissions from Delhi using Car MAX-DOAS observations and comparison with OMI satellite data [PDF]

Atmospheric Chemistry and Physics, 2011
We present the first Multi-Axis-(MAX-) DOAS observations in India performed during April 2010 and January 2011 in Delhi and nearby regions. The MAX-DOAS instrument was mounted on a car roof, which allowed us to perform measurements along individual ...
R. P. Singh, A. Chauhan, S. Beirle, M. Sharma, R. Shaiganfar, T. Wagner   +5 more
doaj   +1 more source

Evaluation NO2 Detection Using Low-Cost Folded-Path Photometer

Journal of Mathematical and Fundamental Sciences, 2023
As it impacts both environmental and health conditions, the measurement of nitrogen dioxide (NO2) in industrial and residential areas needs comprehensive and reliable instrumentation providing long-interference-free operation and minimum maintenance and
Januar Arif Fatkhurrahman, Puji Lestari
doaj   +1 more source

Thinned coprime arrays for DOA estimation [PDF]

2017 25th European Signal Processing Conference (EUSIPCO), 2017
Publication in the conference proceedings of EUSIPCO, Kos island, Greece ...
Ahsan Raza, Wei Liu 0001, Qing Shen 0002
openaire   +3 more sources

Streptavidins Coordinate Biotin Sequestration and Self‐Resistance Within a Biotin‐Pathway Antibiotic Network

Advanced Science, EarlyView.
A conserved genomic region between two streptavidin genes in Streptomyces packages biosynthetic gene clusters for diverse biotin‐pathway antibiotics: acidomycin, stravidin, the new non‐proteinogenic amino acid ANDA, and the new BioA inhibitor α‐methyl‐KAPA.
Sumire Kurosawa, Jingjun Mo, Xiaotong Diao, Feng Xie, Tingting Wang, Haowen Zhao, Dalei Wu, Rolf Müller, Chengzhang Fu   +8 more
wiley   +1 more source

Measurement report: Aerosol vertical profiling over the Southern Great Barrier Reef using lidar and MAX-DOAS measurements [PDF]

Atmospheric Chemistry and Physics
Aerosol vertical profile measurements were made using a Multi-Axis Differential Optical Absorption Spectrometer (MAX-DOAS) and Mini Micro Pulse Lidar (MPL) at One Tree Island in the Southern Great Barrier Reef from February to April 2023.
R. G. Ryan, L. Toms-Hardman, A. Smirnov, A. Smirnov, D. P. Harrison, D. P. Harrison, R. Schofield   +6 more
doaj   +1 more source

Comparison of tropospheric NO₂ columns from MAX-DOAS retrievals and regional air quality model simulations [PDF]

Atmospheric Chemistry and Physics, 2020
Multi-axis differential optical absorption spectroscopy (MAX-DOAS) tropospheric NO2 column retrievals from four European measurement stations are compared to simulations from five regional air quality models which contribute to the European regional ...
A.-M. Blechschmidt, J. Arteta, A. Coman, L. Curier, L. Curier, H. Eskes, G. Foret, C. Gielen, F. Hendrick, V. Marécal, F. Meleux, J. Parmentier, E. Peters, G. Pinardi, A. J. M. Piters, M. Plu, A. Richter, A. Segers, M. Sofiev, Á. M. Valdebenito, M. Van Roozendael, J. Vira, T. Vlemmix, J. P. Burrows   +23 more
doaj   +1 more source

DoA Estimation via Unlimited Sensing

2020 28th European Signal Processing Conference (EUSIPCO), 2021
Direction-of-arrival (DoA) estimation is a mature topic with decades of history. Despite the progress in the field, very few papers have looked at the problem of DoA estimation with unknown dynamic range. Consider the case of space exploration or near-field and far-field emitters.
Samuel Fernández-Menduiña, Felix Krahmer, Geert Leus, Ayush Bhandari   +3 more
openaire   +4 more sources