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Sensors, Volume 19, Issue 5

March-1 2019 - 281 articles

Cover Story: The study presents a novel approach in the application of UAV imaging for the conjoint assessment of the snow depth and winter leaf area index (LAI). LAI assessment, crucial for the correct interpretation of the snow depth distribution in forested areas, was based on downward-looking UAV images taken in the forest regime. To identify the canopy characteristics from downward-looking UAV images, the snow background was used instead of the sky fraction. Field surveying of snow depth and LAI were conducted as a reference to UAV imaging. The study covered sites with a varying structure and the state of the Norway spruce forest cover, ranging from healthy and disturbed forest to a meadow area, over a winter season. Since the snow depth and the LAI parameters are essential for snowpack studies, this combined method will be of great value to simplifying snow depth and the LAI assessment of snow dynamics. View this paper.
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Articles (281)

  • Article
  • Open Access
5 Citations
6,005 Views
10 Pages

12 March 2019

In this paper, WO3·0.33H2O nanorods were prepared through a simple hydrothermal method using p-aminobenzoic acid (PABA) as an auxiliary reagent. X-ray diffraction (XRD) and transmission electron microscopy (TEM) images showed that the products...

  • Article
  • Open Access
102 Citations
14,414 Views
23 Pages

HABITAT: An IoT Solution for Independent Elderly

  • Elena Borelli,
  • Giacomo Paolini,
  • Francesco Antoniazzi,
  • Marina Barbiroli,
  • Francesca Benassi,
  • Federico Chesani,
  • Lorenzo Chiari,
  • Massimiliano Fantini,
  • Franco Fuschini and
  • Andrea Galassi
  • + 16 authors

12 March 2019

In this work, a flexible and extensive digital platform for Smart Homes is presented, exploiting the most advanced technologies of the Internet of Things, such as Radio Frequency Identification, wearable electronics, Wireless Sensor Networks, and Art...

  • Article
  • Open Access
19 Citations
6,498 Views
11 Pages

Underwater Acoustic Time Delay Estimation Based on Envelope Differences of Correlation Functions

  • Guodong Li,
  • Jinsong Wu,
  • Taolin Tang,
  • Zhixin Chen,
  • Jun Chen and
  • Huang Liu

12 March 2019

This paper proposes underwater acoustic time delay estimation based on the envelope differences of correlation functions (EDCF), which mitigates the delay estimation errors introduced by the amplitude fluctuations of the correlation function envelope...

  • Article
  • Open Access
25 Citations
6,144 Views
16 Pages

Luminescent Lanthanide Metal Organic Frameworks as Chemosensing Platforms towards Agrochemicals and Cations

  • Germán E. Gomez,
  • María dos Santos Afonso,
  • Héctor A. Baldoni,
  • Federico Roncaroli and
  • Galo J. A. A. Soler-Illia

12 March 2019

Since the first studies of luminescent sensors based on metal organic frameworks (MOFs) about ten years ago, there has been an increased interest in the development of specific sensors towards cations, anions, explosives, small molecules, solvents, e...

  • Article
  • Open Access
4 Citations
5,150 Views
23 Pages

Optimization of the Photon Path Length Probability Density Function-Simultaneous (PPDF-S) Method and Evaluation of CO2 Retrieval Performance Under Dense Aerosol Conditions

  • Chisa Iwasaki,
  • Ryoichi Imasu,
  • Andrey Bril,
  • Sergey Oshchepkov,
  • Yukio Yoshida,
  • Tatsuya Yokota,
  • Vyacheslav Zakharov,
  • Konstantin Gribanov and
  • Nikita Rokotyan

12 March 2019

The photon path length probability density function-simultaneous (PPDF-S) algorithm is effective for retrieving column-averaged concentrations of carbon dioxide (XCO2) and methane (XCH4) from Greenhouse gases Observing Satellite (GOSAT) spectra in Sh...

  • Article
  • Open Access
8 Citations
4,830 Views
16 Pages

12 March 2019

Smartphone indoor positioning ground truth is difficult to directly, dynamically, and precisely measure in real-time. To solve this problem, this paper proposes and implements a robust smartphone high-precision indoor positioning dynamic real-time gr...

  • Article
  • Open Access
8 Citations
4,271 Views
10 Pages

11 March 2019

A flat circular transmission line-based 300 MHz resonator was implemented for the non-contact assessment of burn depths in biological tissues. Used as a transmit-and-receive sensor, it was placed at a 2 mm distance from organic material test samples...

  • Article
  • Open Access
33 Citations
4,421 Views
15 Pages

Extracting Coastal Raft Aquaculture Data from Landsat 8 OLI Imagery

  • Jun Wang,
  • Lichun Sui,
  • Xiaomei Yang,
  • Zhihua Wang,
  • Yueming Liu,
  • Junmei Kang,
  • Chen Lu,
  • Fengshuo Yang and
  • Bin Liu

11 March 2019

Information, especially spatial distribution data, related to coastal raft aquaculture is critical to the sustainable development of marine resources and environmental protection. Commercial high spatial resolution satellite imagery can accurately lo...

  • Article
  • Open Access
26 Citations
4,987 Views
16 Pages

11 March 2019

Bridge safety is important for the safety of vehicles and pedestrians. This paper presents a study on the development of a low-power wireless acceleration sensor and deployment of the sensors on a wireless gateway and cloud platform following the Int...

  • Article
  • Open Access
51 Citations
6,750 Views
18 Pages

Pedestrian Trajectory Prediction in Extremely Crowded Scenarios

  • Xiaodan Shi,
  • Xiaowei Shao,
  • Zhiling Guo,
  • Guangming Wu,
  • Haoran Zhang and
  • Ryosuke Shibasaki

11 March 2019

Pedestrian trajectory prediction under crowded circumstances is a challenging problem owing to human interaction and the complexity of the trajectory pattern. Various methods have been proposed for solving this problem, ranging from traditional Bayes...

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Sensors - ISSN 1424-8220