نتایج جستجو برای: laser land levelling

تعداد نتایج: 302014  

Journal: :International Journal of Enviornment and Climate Change 2022

Technological innovations will leads to meet the present and future challenges of agriculture sector. Water is one important natural resource, since time immemorial, also acted as catalyst during Green Revolution helped India achieve self-sufficient status in food grain production. Fresh water only 2.6% total resources world has be utilized efficiently. Inspite coverage under irrigation phenome...

Journal: :Sustainability 2023

The effective and safe use of FGD gypsum in agricultural land is still debated some countries even though its effectiveness soil management has been reported many studies. Thus, the changes levels salinity, alkalinity, crop yield, other physicochemical properties different types crops after reclamation planting with over four years are evaluated this paper. main aim paper to review effects six ...

2015
J. Leinonen M. Jaakkola

This research paper describes applicability of mobile laser scanning in road depression measurements. The research was commissioned by the Finnish Transport Agency and performed by Destia Ltd. The applicability was researched by examining accuracy, precision, and repeatability of the mobile laser scanning technology. Two about one kilometre long road segments near Porvoo, Finland, were chosen f...

2007
Hieu Duong Roderik Lindenbergh Norbert Pfeifer George Vosselman

Since 2003 the spaceborne laser altimetry system on board of NASA’s Ice, Cloud and land Elevation Satellite (ICESat) has acquired a large world-wide database of full waveform data organized in 15 products. In this research three products are evaluated over The Netherlands. For this purpose the raw full waveform product, the derived Gaussian decomposition product and the global land evaluation p...

2006
Hieu Duong Norbert Pfeifer

Analysis of the full waveform return pulse of laser altimeter systems is expected to increase the possibilities and accuracy in well-known applications of laser altimetry like DTM generation, forestry and earth surface analysis. NASA’s ICESat Geoscience Laser Altimeter System (GLAS) was launched in 2003 and acquires full waveform data along profiles covering the entire earth. In this study, the...

2011
Li Tao Hong Zhang Chao Wang Yixian Tang Bo Zhang

This paper presents a multi-baseline DInSAR algorithm to obtain ground deformation and topography parameters from Quasi Coherent Targets (Q-CTs), such as the bare land and light cultivated areas that distribute broadly on the suburban ground surface. In this study the physical classification characteristics and coherence features are analyzed for Q-CTs targets selection. And a linked parameters...

Journal: :Minutes of the Proceedings of the Institution of Civil Engineers 1920

2011
H. Yildiz R. Forsberg J. Ågren C. C. Tscherning L. E. Sjöberg

The remove-compute-restore (RCR) technique for regional geoid determination implies that both topography and low-degree global geopotential model signals are removed before computation and restored after Stokes' integration or Least Squares Collocation (LSC) solution. The Least Squares Modification of Stokes' Formula (LSMS) technique not requiring gravity reductions is implemented here with a R...

Journal: :Journal of arable crops and marketing 2022

Climate change has now become a subject of concern for the whole world especially developing countries. According to Global Risk Index (GCRI) 2021, Pakistan lies at eight number amongst top ten countries which are facing severe impacts climatic changes. serious repercussions on agriculture sector Pakistan. Mitigation and Adaptation considered be options by climate experts counter negative chang...

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