back·scat·ter

(băk′skăt′ər)

1. The deflection of radiation or particles by electromagnetic or nuclear forces through angles greater than 90° to the initial direction of travel.

2. The radiation or particles so deflected.

back′scat′ter v.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

backscatter

(ˈbækˌskætə)

1. (General Physics) the scattering of particles or radiation, such as sound waves, X-rays, or alpha-particles, by the atoms of the medium through which they pass, in the backward direction

2. (General Physics) the radiation or particles so scattered

3. (Military) a technique whereby very long-range radars locate targets hidden by the curvature of the earth. Radar beams are reflected off the underside of the troposphere onto the target and the return beams, similarly reflected, are measured

to scatter in this way

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

back•scat•ter

(ˈbækˌskæt ər)

n.

1. the deflection of radiation by scattering in a direction opposite to the direction of incidence.

2. radiation scattered in this manner.

[1955–60]

backscatter

Refers to a portion of the laser energy that is scattered back in the direction of the seeker by an obscurant. See also laser.

Dictionary of Military and Associated Terms. US Department of Defense 2005.

ThesaurusAntonymsRelated WordsSynonymsLegend:

Verb

backscatter - scatter (radiation) by the atoms of the medium through which it passes

natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"

disperse, scatter, break up - cause to separate; "break up kidney stones"; "disperse particles"

Translations

rétrodiffusion

Mentioned in

References in periodicals archive

This is not the case for the ALC backscatter signal nor for the brightness temperature from microwave radiometers, so a "forward model" must be used that operates on the prognostic variables within the NWP model to predict the value of the observed parameter, which can then be directly compared with the observation.

HOW CAN EXISTING GROUND-BASED PROFILING INSTRUMENTS IMPROVE EUROPEAN WEATHER FORECASTS? Observations of profiles of winds, aerosols, clouds, temperature, and humidity in the lowest few kilometers of the atmosphere from networks of ceilometers, Doppler wind lidars, and microwave radiometers are starting to flow in real time to forecasting centers in Europe

Axi-Tek will use the technology to develop the next generation of safe and rapid backscatter x-ray inspection equipment, which provides extremely detailed x-ray images, like the body scanners used at airports.

License deal struck for x-ray technology; IN BRIEF

In order to quantatively compare the profiles and measure the spatial characteristics the spatial wave number (k) and spatial scale (2[pi]) is used for estimating the surface roughness from soil moisture data using backscatter SAR (Evans 1992; Wang 2011; Fresnel 2005).

Derivation of Soil Moisture using Modified Dubois Model with field assisted surface roughness on RISAT-1 data

The water cloud model (WCM), a semiempirical forward model, generally assumes that the vegetation canopy is a uniform layer of a cloud of water droplets and has been widely used to separate out the contribution of vegetation backscatter [15-18].

Combined Use of GF-3 and Landsat-8 Satellite Data for Soil Moisture Retrieval over Agricultural Areas Using Artificial Neural Network

In another study [12], a scanning lidar system was used to obtain the backscatter coefficients of aerosols emitted by a pig farm.

Polarization Lidar Detection of Agricultural Aerosol Emissions

This paper presents the architecture design, implement, experimental validation of a bistatic backscatter wireless communication system in Wi-Fi network.

Implementation of bistatic backscatter wireless communication system using ambient Wi-Fi signals

Specifically, the objectives of the study focused on the calibration methods of each ADCP instrument, the estimation of total suspended solids concentration from backscatter in static and mobile ADCP, and the comparison of the effect of tides on suspended sediment concentrations in oceanography aspect.

Quantification and Analysis of Suspended Sediments Concentration Using Mobile and Static Acoustic Doppler Current Profiler Instruments

Full-thickness corneal backscatter evaluation showed the measured maximum optical backscattering intensities on a densitogram on a relative scale from 0 to 100 (0 = no clouding, 100 = tissue completely opaque).

Corneal Backscatters as an Objective Index for Assessing Fuchs' Endothelial Corneal Dystrophy: A Pilot Study

According to the company, with this acquisition, its security offerings now include additional inspection systems based on X-ray backscatter technology, including the Z Backscatter Van (ZBV) and the MINI Z portable backscatter based inspection system.

OSI Systems acquires American Science and Engineering for USD269m