Case Study: Rigorous Boresight Alignment of a Marine Mobile LiDAR System Addressing the Specific Demands of Port Infrastructure Monitoring

2022 ◽  
pp. 1-18
Author(s):  
Mohsen H. Shahraji ◽  
C. Larouche
Keyword(s):  
Lidar System ◽  
Infrastructure Monitoring ◽  
Port Infrastructure

scholarly journals Landslide Awareness System (LAwS) to Increase the Resilience and Safety of Transport Infrastructure: The Case Study of Pan-American Highway (Cuenca–Ecuador)

2021 ◽  
Vol 13 (8) ◽  
pp. 1564
Author(s):  
Pietro Miele ◽  
Mariano Di Di Napoli ◽  
Luigi Guerriero ◽  
Massimo Ramondini ◽  
Chester Sellers ◽  
...  
Keyword(s):  
Point Of View ◽  
Transport Infrastructure ◽  
Slope Failures ◽  
Network Systems ◽  
Socioeconomic Impacts ◽  
Economic Point ◽  
Infrastructure Monitoring ◽  
Ground Deformations ◽  
Pan American

In most countries, landslides have caused severe socioeconomic impacts on people, cities, industrial establishments, and lifelines, such as highways, railways, and communication network systems. Socioeconomic losses due to slope failures are very high and they have been growing as the built environment expands into unstable hillside areas under the pressures of growing populations. Human activities as the construction of buildings, transportation routes, dams, and artificial canals have often been a major factor for the increasing damage due to slope failures. When recovery actions are not durable from an economic point of view, increasing the population’s awareness is the key strategy to reduce the effects of natural and anthropogenic events. Starting from the case study of the Pan-American Highway (the Ecuadorian part), this article shows a multi-approach strategy for infrastructure monitoring. The combined use of (i) DInSAR technique for detection of slow ground deformations, (ii) field survey activities, and (iii) the QPROTO tool for analysis of slopes potentially prone to collapse allowed us to obtain a first cognitive map to better characterize 22 km of the highway between the cities of Cuenca and Azogues. This study is the primary step in the development of a landslide awareness perspective to manage risk related to landslides along infrastructure corridors, increasing user safety and providing stakeholders with a management system to plan the most urgent interventions and to ensure the correct functionality of the infrastructure.

scholarly journals Optimal transit corridors for Ethiopia

2021 ◽  
Vol 15 ◽  
Author(s):  
Tesfaye B. Takele ◽  
Tassew D. Tolcha
Keyword(s):  
Low Cost ◽  
High Capacity ◽  
Secondary Data ◽  
Petroleum Products ◽  
Economic Feasibility ◽  
Direct Access ◽  
Empirical Literature ◽  
Study Approach ◽  
Port Infrastructure

Background: Ethiopia has been landlocked since Eritrea, a former province, gained independence. Its imports and exports by sea are now sent via neighbouring coastal states, mainly Djibouti, and it needs to ensure sustainable access to multiple transit corridors.Objective: This article aims to evaluate alternative transit corridors to Ethiopia in terms of basic port infrastructure, and logistics costs. The findings provide insights to inform policy on securing reliable maritime access to the country.Method: This study adopts a case study approach by using secondary data to evaluate alternative transit corridors. Following a critical review of theoretical and empirical literature, descriptive statistics are presented using tables, graphs and charts.Results: Low-cost, high-capacity and high-frequency global maritime freight trade is easier through Djibouti than through Mombasa in Kenya or Port Sudan, owing to its better liner shipping connectivity. Thus, Ethiopia should continue to import containerised cargo through the Port of Djibouti. However, direct access to the sea is also important for national defence and security.Conclusion: Ethiopia should therefore secure access through multiple ports to safeguard national security, regardless of economic feasibility. This can be realised by directing break-bulk, dry bulk and petroleum products through ports in Sudan and Kenya. In addition, particular emphasis should be given to seaports closest to the country’s economic centre, such as Berbera in Somaliland and Asseb and Massawa in Eritrea.

scholarly journals Shallow snow depth mapping with unmanned aerial systems lidar observations: A case study in Durham, New Hampshire, United States

2020 ◽  
Author(s):  
Jennifer M. Jacobs ◽  
Adam G. Hunsaker ◽  
Franklin B. Sullivan ◽  
Michael Palace ◽  
Elizabeth A. Burakowski ◽  
...  
Keyword(s):  
Snow Depth ◽  
Laser Scanning ◽  
Coniferous Forest ◽  
Potential Method ◽  
Unmanned Aerial Systems ◽  
Lidar System ◽  
Aerial Vehicle ◽  
Aerial Systems ◽  
Lidar Observations

Abstract. Shallow snowpack conditions, which occur throughout the year in many regions as well as during accumulation and ablation periods in all regions, are important in water resources, agriculture, ecosystems, and winter recreation. Terrestrial and airborne (manned and unmanned) laser scanning and structure from motion (SfM) techniques have emerged as viable methods to map snow depths. Lidar on an unmanned aerial vehicle is also a potential method to observe field and slope scale variations of shallow snowpacks. This paper describes an unmanned aerial lidar system, which uses commercially available components, for snow depth mapping on the landscape scale. The system was assessed in a mixed deciduous and coniferous forest and open field for a shallow snowpack (

Algorithmic network monitoring for a modern water utility: a case study in Jerusalem

2011 ◽  
Vol 63 (2) ◽  
pp. 233-239 ◽  
Author(s):  
A. Armon ◽  
S. Gutner ◽  
A. Rosenberg ◽  
H. Scolnicov
Keyword(s):  
Real Time ◽  
Water Utilities ◽  
Time Data ◽  
Statistical Solution ◽  
Water Utility ◽  
Infrastructure Monitoring ◽  
Scada System ◽  
Strong Focus ◽  
And Control

We report on the design, deployment, and use of TaKaDu, a real-time algorithmic Water Infrastructure Monitoring solution, with a strong focus on water loss reduction and control. TaKaDu is provided as a commercial service to several customers worldwide. It has been in use at HaGihon, the Jerusalem utility, since mid 2009. Water utilities collect considerable real-time data from their networks, e.g. by means of a SCADA system and sensors measuring flow, pressure, and other data. We discuss how an algorithmic statistical solution analyses this wealth of raw data, flexibly using many types of input and picking out and reporting significant events and failures in the network. Of particular interest to most water utilities is the early detection capability for invisible leaks, also a means for preventing large visible bursts. The system also detects sensor and SCADA failures, various water quality issues, DMA boundary breaches, unrecorded or unintended network changes (like a valve or pump state change), and other events, including types unforeseen during system design. We discuss results from use at HaGihon, showing clear operational value.

scholarly journals Mapeamento das áreas de armazenamento de água em depressão, usando dados LIDAR: Estudo de caso avenida Caxangá

2021 ◽  
Vol 14 (1) ◽  
pp. 058
Author(s):  
Camila Gardenea de Almeida Bandim ◽  
Josiclêda Domiciano Galvíncio
Keyword(s):  
Water Storage ◽  
Light Detection And Ranging ◽  
Lidar Data ◽  
Urban Drainage ◽  
Lidar System ◽  
Light Detection ◽  
Urban Flood ◽  
Digital Elevation ◽  
Elevation Model

O objetivo deste estudo consiste em avaliar as áreas inundáveis em Recife, com especial atenção à avenida Caxangá.  Iniciando uma análise sobre a drenagem convencional utilizando a tecnologia LIDAR (Light Detection And Ranging). Os dados empregados neste trabalho foram captados pelo sistema LIDAR e possuem 50 cm de resolução, sendo um total de 12 quadrículas xyz para a constituição do mosaico Modelo Digital de Elevação (MDE) da avenida Caxangá, com destaque para as quadrículas 81_50-05 e 81_60-05, partindo dessas foram geradas as direções e acúmulos de fluxo. Os resultados obtidos enfatizam a alta resolução através da nítida visualização de elementos naturais e artificiais, e ainda o nivelamento do terreno. Em seguida, observa-se o acúmulo de fluxo que exibe as diferentes direções e acúmulos do escoamento superficial, ainda se percebe a influência na drenagem urbana das construções antrópicas e da vegetação em locais pontuais da avenida Caxangá. Em conclusão os dados do sistema LIDAR responderam positivamente, tanto na captação na modelagem do terreno e topografia artificial, como também para as gerações de direções e acúmulo de fluxos apresentando maiores valores para áreas depressivas naturais e antropizadas. Sendo destaque neste estudo as áreas antropizadas por provocarem problemas de desastres naturais. Conclui-se que as áreas antropizadas exercem um importante papel na drenagem urbana.  Mapping water storage areas in depression, using LIDAR data: Caxangá Avenida case study A B S T R A C TThe objective of this study is to evaluate the floodable areas in Recife, with special attention to Avenida Caxangá. Starting an analysis on conventional drainage using LIDAR (Light Detection And Ranging) technology. The data used in this work were captured by the LIDAR system and have 50 cm of resolution, with a total of 12 xyz squares for the constitution of the Digital Elevation Model (MDE) mosaic on Avenida Caxangá, with emphasis on the squares 81_50-05 and 81_60 -05, from these directions and flow accumulations were generated. The results obtained emphasize the high resolution through the clear visualization of natural and artificial elements, as well as the leveling of the terrain. Then, there is the accumulation of flow that shows the different directions and accumulations of runoff, the influence on the urban drainage of anthropic buildings and vegetation in specific places on Avenida Caxangá is still perceived. In conclusion, the data from the LIDAR system responded positively, both in capturing terrain modeling and artificial topography, as well as for generations of directions and accumulation of flows, presenting higher values for natural and anthropized depressive areas. Being highlighted in this study the areas anthropized because they cause problems of natural disasters. It is concluded that anthropized areas play an important role in urban drainage.Keywords: Geoprocessing. Remote sensing. Urbanization. Urban flood. drainage

scholarly journals Electrical and Energy Systems Integration for Maritime Environment-Friendly Transportation

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7240
Author(s):  
Andrea Vicenzutti ◽  
Giorgio Sulligoi
Keyword(s):  
Energy Storage ◽  
Environmental Performance ◽  
Energy Systems ◽  
Electrical Energy ◽  
Marine Transportation ◽  
Environment Friendly ◽  
Storage Technologies ◽  
Port Infrastructure ◽  
Maritime Environment

The policies against climate change require the reduction of greenhouse gas emissions of marine transportation. To reach the planned goals, the most promising approach is working both on ships improvement and ports redesign. The latter must enable the new green ships supply with sustainable electrical energy, by integrating shore connection systems, local renewables, and energy storage systems. In this paper, a methodology to obtain such an objective is proposed, capable of taking into account both ships’ and ports’ characteristics. The methodology workflow is explained through a case study, where two shore connection power sizes and two different operative approaches for recharging the ship onboard energy storage are considered. A discussion about the most suitable energy storage technologies is also provided. The case study shows how the methodology can be applied, as well as demonstrating that the port infrastructure has a direct effect on the ship environmental performance.

scholarly journals Influence of aerosols and thin cirrus clouds on the GOSAT-observed CO<sub>2</sub>: a case study over Tsukuba

2011 ◽  
Vol 11 (11) ◽  
pp. 29883-29914 ◽  
Author(s):  
O. Uchino ◽  
N. Kikuchi ◽  
T. Sakai ◽  
I. Morino ◽  
Y. Yoshida ◽  
...  
Keyword(s):  
Near Infrared ◽  
Cirrus Clouds ◽  
Total Carbon ◽  
Observation Data ◽  
Vertical Profiles ◽  
Lidar System ◽  
Infrared Band ◽  
The Difference ◽  
Lidar Observations

Abstract. Lidar observations of vertical profiles of aerosols and thin cirrus clouds were made at Tsukuba (36.1° N, 140.1° E), Japan, to investigate the influence of aerosols and thin cirrus clouds on the column-averaged dry-air mole fraction of carbon dioxide (XCO2) retrieved from observation data of the Thermal And Near-infrared Sensor for carbon Observation Fourier Transform Spectrometer, measured in the Short-Wavelength InfraRed band (TANSO-FTS SWIR), onboard the Greenhouse gases Observing SATellite (GOSAT). The lidar system measured the backscattering ratio, depolarization ratio, and/or the wavelength exponent of atmospheric particles. The lidar observations and ground-based high-resolution FTS measurements at the Tsukuba Total Carbon Column Observing Network (Tsukuba TCCON) site were recorded simultaneously during passages of GOSAT over Tsukuba. GOSAT SWIR XCO2 data (version 01.xx) released in August 2010 were compared with the lidar and Tsukuba TCCON data. High-altitude aerosols and thin cirrus clouds had a large impact on the GOSAT SWIR XCO2 results. By taking into account the observed aerosol/cirrus vertical profiles and using a more adequate solar irradiance database in the GOSAT SWIR retrieval, the difference between the GOSAT SWIR XCO2 data and the Tsukuba TCCON data was greatly reduced.

Sign in / Sign up

Export Citation Format

Share Document