搜索结果: 1-15 共查到“固体地球物理学 Radar”相关记录16条 . 查询时间(0.075 秒)
Latest improvements for the echo sounding system of the Italian radar glaciological group and measurements in Antarctica
radioglaciology ground penetrating radar ice thickness measurements
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2015/10/8
Radio echo sounding is an active remote-sensing method using electromagnetic wave penetration in a particular medium such as ice and permits the measurements of its thickness, the level of the bedrock...
Ionospheric Doppler measurements by means of HF-radar techniques
shift Doppler ionosphere plasma drift
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2015/9/10
Studies of the dynamics of the ionosphere and its related phenomena are mainly based on Doppler Drift measurements. The time variation (ionisation/recombination) of plasma density, thermospheric wind ...
Some considerations for different time-domain signal processing of pulse compression radar
code correlation ionosphere radar time domain
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2015/8/28
Radar technology has for a long time used various systems that allow detection under high-resolution conditions, while emitting at the same time low peak power. Among these systems, transmitted pulse ...
Volcanic Ash Cloud Observation using Ground-based Ka-band Radar and Near-Infrared Lidar Ceilometer during the Eyjafjallajökull eruption
Volcanic eruptions radar lidar
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2015/8/18
Active remote sensing techniques can probe volcanic ash plumes, but their sensitivity at a given distance depends upon the sensor transmitted power, wavelength and polarization capability. Building on...
Interpretation of non-specular radar meteor trails
radar meteor trails consistent features
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2017/3/22
Radar data of non-specular meteor trails shows two
clear and consistent features: (1) non– specular meteor trails
are observed from a narrower altitude range than are head
echoes and (2) an approxi...
Concept study of radar sensors for near-field tsunami early warning
Concept study radar sensors near-field tsunami early warning
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2010/10/21
Off-shore detection of tsunami waves is a critical component of an effective tsunami early warning system (TEWS). Even more critical is the off-shore detection of local tsunamis, namely tsunamis that ...
Assessment of the performance of X-band satellite radar data for landslide mapping and monitoring: Upper Tena Valley case study
performance X-band satellite radar data landslide mapping monitoring Upper Tena Valley case study
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2010/10/21
The aim of this work is to analyse the advantages and disadvantages of using the new X-band SAR data acquired by TerraSAR-X sensors for landslides mapping. This dataset has been processed using a Pers...
A multiscale approach to estimating topographically correlated propagation delays in radar interferograms
atmospheric dela multiscale analysis InSAR Long Valley Caldera Tocopilla earthquake
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2014/4/9
When targeting small amplitude surface deformation, using repeat orbit Interferometric Synthetic Aperture Radar (InSAR) observations can be plagued by propagation delays, some of which correlate with ...
Can We Calibrate Radar with Raingauges ?
Radar Raingauges
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2009/6/15
Can We Calibrate Radar with Raingauges?
Development of the Real-time Radar Image Processing for a Horizontal Drilling Machine
Other utilities detection Radar Penetrating distance Pulse wave
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2009/3/5
In order to identify the underground objects, we often use a Ground Penetrating Radar (GPR) from the point of reducing cost and time. But it is not a few cases that the pavement situation prevents fro...
Dependence of radar signal strength on frequency and aspect angle of nonspecular meteor trails
radar signal strength frequency and aspect angle
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2017/3/22
When a meteoroid penetrates Earth’s atmosphere, it forms a high-density ionized
plasma column immersed in the ionosphere between approximately 70 and 140 km
altitude. High-power, large-aperture (HPL...
Radar-derived bed rou ghness characterization of Institute and M o¨ ller ice streams, West Antarctica, and comparison with Siple C oast ice streams
ghness characterization M o¨ ller ice streams
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2014/5/20
Subglacial bed conditions exert a signif i cant control on
ice stream behavior and evolution, and can be characterized
by determining bed roughness from FFT analysis of r adar-imaged basal reflector...
Modelling high-power large-aperture radar meteor trails
Plasma instabilities Large-aperture radars
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2017/3/22
Despite decades of research, many questions remain about the global flux of meteoroids at Earth, their influence on
the atmosphere, and their use as upper atmospheric diagnostics. We see high-power l...
A technique for calculating meteor plasma density and meteoroid mass from radar head echo scattering
Meteors Meteoroids Rada Radio observations
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2017/3/22
Large-aperture radars detect the high-density plasma that forms in the vicinity of a meteoroid and moves approximately at its velocity;
reflections from these plasmas are called head echoes. To deter...
Location and mechanism of the Little Skull Mountain earthquake as constrained by satellite radar interferometry and seismic waveform modeling
Location mechanism the Little Skull Mountain earthquake constrained satellite radar interferometry seismic waveform modeling
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2014/4/9
We use interferometric synthetic aperture radar (InSAR) and broadband seismic waveform data to estimate source parameters of the 29 June 1992,Ms 5.4 Little Skull Mountain (LSM) earthquake. This event ...