Atmospheric Interference
Atmospheric Interference - Related Videos
02:18
Interference and Diffraction
0 Views •
2020
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other. Alternatively, if the two waves coincide and interact in a way such that the trough of one wave coincides with the peak of the other (in an out of phase manner), the resultant wave will...
08:41
Interference and Diffraction
0 Views •
2023
Source: Yong P. Chen, PhD, Department of Physics & Astronomy, College of Science, Purdue University, West Lafayette, IN Interference and diffraction are characteristic phenomena of waves, ranging from water waves to electromagnetic waves such as light. Interference refers to the phenomenon of when two waves of the same kind overlap to give an alternating spatial variation of large and small wave amplitude. Diffraction refers to the phenomenon of when a wave passes through an aperture or...
01:23
RNA Interference
0 Views •
2019
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated. This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
13:27
Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface
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Cited by 9 •
2015
A protocol for the design and construction of a soil tank interfaced to a small climate controlled wind tunnel to study the effects of atmospheric forcings on evaporation is presented. Both the soil tank and wind tunnel are instrumented with sensor technologies for the continuous in situ measurement of environmental conditions.
09:06
RNA Interference in Ticks
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Cited by 49 •
2011
A method for RNA interference (RNAi) by injection of dsRNA into unfed ticks is described. RNAi is the most widely used gene-silencing technique in ticks where the use of other methods of genetic manipulation has been limited.
FAQs
These atmospheric constituents can absorb or scatter electromagnetic, acoustic, or optical energy along a propagation path. Absorption removes part of the transmitted energy, while scattering redirects it and can reduce the energy reaching a receiver. Clouds and precipitation add environmental variability, so engineers must account for changing atmospheric conditions when evaluating link performance and measurement reliability.
Temperature gradients change how signals refract as they move through the atmosphere, which can alter their propagation path and delay. Turbulence introduces additional fluctuations that may produce fading, distortion, or noise. These effects matter because a system can experience reduced transmission reliability or measurement accuracy even when its transmitter, receiver, or sensor remains operational.
The dominant effect depends on whether a system uses electromagnetic, acoustic, or optical signals and on the atmospheric conditions along its path. Absorption and scattering can weaken signals, while refraction can change their travel behavior. Consequently, wireless links, radar, satellite systems, remote-sensing instruments, and optical sensors may require different interference assessments.
Engineers should examine the signal type, propagation path, and relevant atmospheric conditions, including gases, aerosols, clouds, precipitation, temperature gradients, and turbulence. Characterization determines whether attenuation, scattering, refraction, fading, delay, or noise is likely to limit performance. This information supports environmental modeling and helps connect observed signal changes with specific atmospheric influences.
It is important wherever signals must travel through Earth’s atmosphere or support accurate remote measurements. Examples include wireless communication links, radar, satellite systems, remote-sensing instruments, and optical sensors. In these applications, atmospheric characterization helps engineers anticipate transmission losses and measurement errors, improving system design decisions and the reliability of collected or transmitted information.
Engineers can address atmospheric effects through frequency selection, adaptive correction, signal processing, and environmental modeling. Frequency selection can help account for atmospheric transmission behavior, while adaptive correction and signal processing compensate for changing distortions or noise. Modeling provides a basis for predicting environmental effects, supporting more reliable transmission and improved measurement accuracy.