Geometric Analysis of Ground-Target Coverage from a Satellite by Field-Mapping Method

2021 ◽  
pp. 1-12
Author(s):  
Chao Han ◽  
Yujin Zhang ◽  
Shengzhou Bai
Keyword(s):  
Geometric Analysis ◽  
Mapping Method ◽  
Target Coverage ◽  
Field Mapping ◽  
Ground Target

Distortion correction for high‐resolution single‐shot EPI DTI using a modified field‐mapping method

2019 ◽  
Author(s):  
Yuhui Xiong ◽  
Guangqi Li ◽  
Erpeng Dai ◽  
Yishi Wang ◽  
Zhe Zhang ◽  
...  
Keyword(s):  
High Resolution ◽  
Mapping Method ◽  
Distortion Correction ◽  
Single Shot ◽  
Field Mapping ◽  
Resolution Single

scholarly journals The influence of the highway route on the development of patchwork of plots

2016 ◽  
Vol 30 (1) ◽  
pp. 3-11 ◽  
Author(s):  
Monika Balawejder ◽  
Karol Noga
Keyword(s):  
Mapping Method ◽  
Field Mapping ◽  
Table Method ◽  
Cadastral Maps ◽  
Conducting Research ◽  
The Village

AbstractWhen defining the patchwork of plots, based on the literature, it lists the types and subtypes, and given their prevalence in the studied villages. Characterized listed types and subtypes the patchwork of plots the adopted villages crossed by the highway, paying particular attention to the fragmentation of the parcels. Particular attention was paid to the occurrence of the patchwork of the outer of plots for the following reasons: firstly – the presence of plots owners do not reside in the surveyed villages (out-of-village owners) and living in the surveyed villages, but with land in other surveyed villages (local non-resident owners), which is an important issue approximately of plots owners to habitat in the complex work of consolidation and exchange of land; secondly – it allows for adjustment of the boundaries of the village, which destroys the highway without immediate execution merge. This should make such a correction using only the exchange of land; thirdly – crossing the village highway of plots prevents access to out-of-village owners and local non-resident owners when their habitats are located on the opposite side thereof. The study of this problem are designed the patchwork table method to both the external patchwork of plots and internal patchwork of plots. Conducting research in this field mapping method was used to present the occurrence of the external patchwork of plots and the internal patchwork of plots on the cadastral maps.

Trapped Magnetic Field in Proton Irradiated Melt-Textured Y-Ba-Cu-O Superconductors

1991 ◽  
Vol 235 ◽  
Author(s):  
In-Gann Chen ◽  
Jianxiong Liu ◽  
Roy Weinstein
Keyword(s):  
Magnetic Field ◽  
Current Model ◽  
High Energy ◽  
Mapping Method ◽  
Mapping Technique ◽  
High Energy Proton ◽  
Field Mapping ◽  
Trapped Field ◽  
Trapped Magnetic Field ◽  
Energy Proton

ABSTRACTThe trapped magnetic fields in high energy proton irradiated melt-textured Y-Ba-Cu-O (MT-Y123) high temperature superconductors (HTS) materials have been studied. Prototype of mini-magnet, about 1 cm3 which retains about 14, 200 G @ 77 K, has been made with these proton irradiated samples. Quasi-persistent magnetic field near 3 to 5 Tesla in liquid nitrogen is feasible with our current MT-Y123 samples. Two types of motors have been tested successfully by replacing metallic permanent magnet with the trapped field in MT-Y123 samples.The trapped magnetic field mapping technique is used to study the superconducting properties of the MT-Y123 materials. Granular structures in MT-Y123 samples can be observed directly by the field mapping method. A phenomenological current model has been developed to account for the trapped field intensity and profile in HTS samples. The trapped field can be reproduced very well by this model. Remenant magnetic moment trapped by MT-Y123 samples measured by this mapping method and by standard VSM will be discussed. The effect of high energy proton (160–210 MeV) bombardment on the field trapping capability and stability will be discussed.

scholarly journals A digital mapping method for linking high-resolution remote sensing images to individual tree crowns

2018 ◽  
Author(s):  
Sarah Graves ◽  
Justin Gearhart ◽  
T Trevor Caughlin ◽  
Stephanie Bohlman
Keyword(s):  
Remote Sensing ◽  
High Resolution ◽  
Remote Sensing Data ◽  
Mapping Method ◽  
Ecological Studies ◽  
Ecological Data ◽  
Individual Tree ◽  
Field Mapping ◽  
Sensing Data ◽  
Individual Trees

Remote sensing data provides unique information about the Earth’s surface that can be used to address ecological questions. Linking high-resolution remote sensing data to field-based ecological data requires methods to identify objects of interest directly on georeferenced remote sensing digital images while in the field. Mapping individual trees with a GPS often has location error and is focused on the position of the tree stem rather than the crown, often creating a mismatch between field data and the pixel information. We describe a mapping process that uses a consumer-grade GPS and tablet computer to spatially match individual trees measured in the field directly to a digital image of their crowns taken from above the canopy. This paper outlines the reasons for using digital field mapping and a summary of the equipment and process, with supplemental material providing a detailed field protocol. As more remote sensing data with a resolution capable of resolving individual trees become available, the opportunities to leverage these data for ecological studies grow. We provide guidelines for those wanting to apply imagery to expand the spatial scale and extent of ecological studies.

scholarly journals A propensity index for surface runoff on a karst plateau

2018 ◽  
Author(s):  
Christian Reszler ◽  
Jürgen Komma ◽  
Hermann Stadler ◽  
Elmar Strobl ◽  
Günter Blöschl
Keyword(s):  
Surface Runoff ◽  
Spatial Information ◽  
Visual Assessment ◽  
Mapping Method ◽  
Local Data ◽  
Study Region ◽  
Field Mapping ◽  
Terrain Model ◽  
Karst Areas ◽  
Infiltration Excess

Abstract. Karst aquifers are an important water resource, but are particularly vulnerable to pollution due to the typically short residence times. As the rainwater runs off on the surface it may collect contamination from faeces and other sources, before infiltrating. It is therefore important to understand the frequency of surface runoff in Karst areas. This paper proposes a new field mapping method for the ability of the landscape to produce and convey surface runoff. The mapping method is based on (i) local data collection in the field (e.g. soil moisture, grain size distribution), (ii) a visual assessment from a distance at the landscape scale (e.g. traces of surface runoff) and (iii) prior spatial information (e.g. geological map, terrain model). The focus on variables that can be assessed from a distance in the landscape makes the method suitable for mapping larger areas than traditional field mapping. The mapping method is developed and tested for the 60 km2 Hochschwab area in Austria. The field mapping is used to specify a surface runoff propensity index which is tested against the spatial distribution of observed sink holes in the area. The mapping indicates that, in the study region, runoff occurs much more frequently in the poorly karstified dolomitic areas than in the limestone areas that are highly karstified. On dolomites, low permeable soils or debris prevail, often resulting in a permanent surface drainage network. On karstified limestone, sometimes overlaid by debris, surface runoff only occurs through infiltration excess at high rainfall intensities. Overall the analyses suggest that the mapping method is suitable for efficiently and reliably identifying spatial patterns of the ability of the landscape to produce and convey surface runoff in karst areas.

scholarly journals A digital mapping method for linking high-resolution remote sensing images to individual tree crowns

2018 ◽  
Author(s):  
Sarah Graves ◽  
Justin Gearhart ◽  
T Trevor Caughlin ◽  
Stephanie Bohlman
Keyword(s):  
Remote Sensing ◽  
High Resolution ◽  
Remote Sensing Data ◽  
Mapping Method ◽  
Ecological Studies ◽  
Ecological Data ◽  
Individual Tree ◽  
Field Mapping ◽  
Sensing Data ◽  
Individual Trees

Remote sensing data provides unique information about the Earth’s surface that can be used to address ecological questions. Linking high-resolution remote sensing data to field-based ecological data requires methods to identify objects of interest directly on georeferenced remote sensing digital images while in the field. Mapping individual trees with a GPS often has location error and is focused on the position of the tree stem rather than the crown, often creating a mismatch between field data and the pixel information. We describe a mapping process that uses a consumer-grade GPS and tablet computer to spatially match individual trees measured in the field directly to a digital image of their crowns taken from above the canopy. This paper outlines the reasons for using digital field mapping and a summary of the equipment and process, with supplemental material providing a detailed field protocol. As more remote sensing data with a resolution capable of resolving individual trees become available, the opportunities to leverage these data for ecological studies grow. We provide guidelines for those wanting to apply imagery to expand the spatial scale and extent of ecological studies.

scholarly journals A propensity index for surface runoff on a karst plateau

2018 ◽  
Vol 22 (12) ◽  
pp. 6147-6161
Author(s):  
Christian Reszler ◽  
Jürgen Komma ◽  
Hermann Stadler ◽  
Elmar Strobl ◽  
Günter Blöschl
Keyword(s):  
Spatial Distribution ◽  
Surface Runoff ◽  
Spatial Information ◽  
Visual Assessment ◽  
Mapping Method ◽  
Local Data ◽  
Study Region ◽  
Field Mapping ◽  
Karst Areas ◽  
Infiltration Excess

Abstract. Karst aquifers are an important water resource, but are particularly vulnerable to pollution due to the typically short residence times. As the rainwater runs off on the surface it may collect contamination from faeces and other sources, before infiltrating the surface. It is therefore important to understand the spatial distribution of the frequency of surface runoff in karst areas. This paper proposes a new field-mapping method for the ability of the landscape to produce and convey surface runoff. The mapping method is based on (i) prior spatial information (e.g. geological map, terrain model), (ii) a visual assessment from a distance at the landscape scale (e.g. traces of surface runoff) and (iii) local data collection in the field (e.g. soil moisture, grain size distribution). The focus on variables that can be assessed from a distance in the landscape makes the method suitable for mapping larger areas than traditional field mapping. The mapping method is developed and tested for the 60 km2 Hochschwab area in Austria. The field mapping is used to specify a surface runoff propensity index which is tested against the spatial distribution of observed sink holes in the area. The mapping indicates that, in the study region, runoff occurs much more frequently in the poorly karstified dolomitic areas than in the limestone areas that are highly karstified. On dolomites, low permeable soils or debris prevail, often resulting in a permanent surface drainage network. On karstified limestone, sometimes overlaid by debris, surface runoff only occurs through infiltration excess at high rainfall intensities. Overall the analyses suggest that the mapping method is suitable for efficiently and reliably identifying spatial patterns of the ability of the landscape to produce and convey surface runoff in karst areas.

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