1 edition of Millimeter-Wave Backscatter Measurements in Support of Surface Navigation Applications found in the catalog.
Millimeter-Wave Backscatter Measurements in Support of Surface Navigation Applications
by Storming Media
Written in English
|The Physical Object|
Backscatter machines produce low-energy X-rays, which have a wavelength on the order of meters, or millimeters. Millimeter wave scanners produce a special type of microwaves with wavelengths that fall in a range exactly between meters (1 millimeter) and meters (10 millimeters). In other words, the waves emitted. Nekrasov A () Airborne weather radar application for measurement of the water surface backscattering signature. In: Proceedings of RADAR , Chengdu, China, 24–27 Oct , p 4 Google Scholar Nekrasov A, De Wit JJM, Hoogeboom P () FM-CW millimeter wave demonstrator system as a sensor of the sea surface wind : Alexey Nekrasov.
However, evidence has yet to show the influences of weaker backscatter and lower resolution of the S-band radar for ocean surface-wave measurements. The aim of present study is to clarify the feasibility and to assess the performance and corresponding accuracy of an S-band marine radar under by: 3. provokes a high backscatter (see Bragg scattering). In the microwave region, this difference between respective properties of land and water can be extremely useful for such applications as flood extent measurement or coastal zones erosion. This animation illustrates the range of backscatter from water surfaces. Influence of incidence angle.
Backscatter machines-- about 30 percent of the installations -- send low-energy X-rays to bounce off a passenger's body. Millimeter wave (mmw) scanners emit energy more akin to microwaves. Both see through clothing to produce a 3-D image of the person standing in the machine. Introduction. Acoustic backscatter (ABS) measurement is a non-intrusive technique for the monitoring of suspended sediment particles in the water column and changing seabed characteristics (see Figures 1 and 2). An acoustic backscatter instrumentation package comprises acoustic sensors, data acquisition, storage and control electronics, and data extraction and reduction software.
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Abstract: Millimeter-wave radar-based sensors are being considered for a number of automotive applications including obstacle detection and collision warning, true-speed, and road-surface recognition.
The interaction of electromagnetic waves with asphalt road surfaces, possibly covered with ice or water, at millimeter-wave frequencies is by: Title: Measurement and Modeling of the Millimeter-Wave Backscatter Response of Soil Surfaces - Geoscience and Remote Sensing, IEEE Transactions on.
Kamal Sarabandi, Senior Member, IEEE, Eric S. Li, and Adib Nashashibi, Member, IEEE. Abstract— Millimeter-wave radar-based sensors are being con- sidered for a number of automotive applications including obsta- cle detection and collision warning, true-speed, and road-surface recognition.
In general, it is found that the overall scattering response of road surfaces is composed of volume and surface scattering components. Previously a hybrid volume scattering model was developed for predicting the backscatter response of smooth asphalt surfaces at millimeter-wave by: The results of this work support the proposition of using the ocean surface as a calibration reference for airborne millimeter-wave cloud radars and for the ongoing NASA CloudSat mission, which will use a GHz spaceborne cloud radar for global cloud by: Nekrasov A (a) Airborne Doppler navigation system application for measurement of the water surface backscattering signature.
In: Wagner W, Székely B (eds) ISPRS TC VII symposium – years ISPRS, Vienna, Austria, 2–4 Julinternational archives of the photogrammetry, remote sensing and spatial information sciences,vol XXXVIII, part 7A, pp – Google ScholarAuthor: Alexey Nekrasov.
The University of Michigan GHz polarimetric radar system was used to perform polarimetric backscatter measurements of the aforementioned road surfaces at near grazing incidence angles (70°°). The backscatter data have been successfully used as a proxy for seafloor substrate mapping , and an object-based image analysis technique was applied to the Cook Strait backscatter data that resulted in a first-level, unsupervised, seabed substrate map [12,13] (Figure ).The classification method is based on textural image analysis  and examines the physical factors influencing.
Backscatter measurements by seafloor‐mapping sonars ‐ Guidelines and Recommendations 8 side‐scan sonar for geometric distortions as well as the production of sonar mosaics – composite georeferenced images of the backscatter, typically normalized to a single angle (e.g.
45°). TheFile Size: 5MB. Chapter 6: Backscatter processing. Chapter 7: Synthesis and Conclusions on backscatter measurements by seafloor-mapping sonars.
The document is designed to reach a wide audience of scientists, engineers, operators and stakeholders all using sonar backscatter for seafloor-mapping applications.
Millimeter-wave radar-based sensors are being considered for a number of automotive applications including obstacle detection and collision warning, true-speed, and road-surface recognition.
GeoHab Publications. - Mapping the Seafloor for Habitat Characterization “ Backscatter measurements by seafloor-mapping sonars: Guidelines and Recommendations”, Xavier Lurton and Geoffroy Lamarche [eds.].
- Seafloor Geomorphology as Benthic Habitat: GeoHAB Atlas of Seafloor Geomorphic Features and Benthic Habitats - 2nd Edition. Polarimetric characterization of debris and faults in the highway environment at millimeter-wave frequencies Abstract: In this paper, measurements and models for the polarimetric backscatter response of various paint targets on roads and road surface faults are by: Abstract: Spaceborne millimeter-wave radars can acquire sea surface backscatter information under clear sky conditions.
The analysis based on the classical sea surface scattering model and a matching data set of global CloudSat Cloud Profiling Radar (CPR) observations and AMSR-E sea surface parameters shows that the sea surface scattering cross section is significantly dependent on the sea surface wind speed Author: Tao Wen, Zhi G.
Yao, Zeng L. Zhao, Long F. Lin, Zhi G. Han, Lin D. Guo. In physics, backscatter is the reflection of waves, particles, or signals back to the direction from which they came. It is usually a diffuse reflection due to scattering, as opposed to specular reflection as from a mirror, although specular backscattering can occur at normal incidence with a surface.
Backscattering has important applications in astronomy, photography, and medical ultrasonography. The opposite. The millimeter-wave (MMW) backscatter response of bare-soil was examined by conducting experimental measurements at 35 and 94 GHz using a truck-mounted polarimetric scatterometer and by.
Abstract: The radar phenomenology of high-voltage power lines and cables is studied for examining the feasibility of detecting power lines along the path of a low-flying aircraft using a millimeter-wave radar system.
For this purpose, polarimetric backscatter measurements of power line samples of different diameters and strand arrangements were performed over a wide range of incidence angles Cited by: The accuracy of the wind direction measurement is ±20°, and the accuracy of the wind speed measurement is ±2 m/s in the wind speed range 3–24 m/s.
Wind blowing over the sea affects the water surface backscatter. B.R.J. Snuttjer and R.M. Narayanan, “Millimeter-Wave Backscatter Measurements in Support of Surface Navigation Applications,” Proc. IEEE International Geoscience and Remote Sensing Symposium (IGARSS’96), Lincoln, NE, pp.
–, May A Radar Cross-Section Model for Power Lines at Millimeter-Wave Frequencies Article (PDF Available) in IEEE Transactions on Antennas and Propagation 51(9) - October with Reads. Full text of "DTIC ADA Millimeter Wave Scatter and Attenuation Measurements on Snow other formats A0-A ROME AIR DEVELOPMENT CENTER 6RIFFISS AFB NY F/6 20/14 MILLIMETER WAVE SCATTER AND ATTENUATION MEASUREMENTS ON SNOW SL—ETC(U) SEP 81 U H LAMMERS# D T HAYES» R A MARR UNCLASSIFIED RADC-TR NL FILE COPY.
Remote sensing techniques using combined concurrent measurements of near-infrared passive reflectance and millimeter-wave radar backscatter show promise in estimating the above snow parameters. Near-infrared reflectance is strongly dependent on snow grain size and free-water content, while millimeter-wave backscatter is primarily dependent on free-water content and, to some extent, Author: Ram M.
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