Preview

Detection of Pollutants in Atmosphere by Digital Signal Processing of Satellite Images

Powerful Essays
Open Document
Open Document
1996 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Detection of Pollutants in Atmosphere by Digital Signal Processing of Satellite Images
Detection of pollutants in atmosphere by digital signal processing of satellite images

Abstract
Satellite imaging has changed the view of remote sensing application. Different methods and ways of processing have been found out . These methods have extended from military applications to research work. A satellite image has to go for image processing and the proper pictorial view can be achieved of the required object. Remote sensing is done in two ways one is satellite imaging and other is ariel photography . the precision and accuracy has been increased due to digital signal processing. Launching of advanced satellites it has been possible to increase the ground resolution of satellite images. Due to increased resolution it has been possibleto extend the work from ground images to atmospherics pollution content images that are difficult by instrumental techniques. Here we are suggesting a theory by which we can do an attempt to get information about change in constituents of air in atmosphere without having to take special images other than regular remote sensing satellite images. Satellite images are taken from satellite with specially designed instruments. These instruments work within multiband of visible light infrared light wavelength and also include thermal images. These different images give us the information about the reflected light and absorbed light from the earth’s surfaces and earth’s atmosphere. We can also get stereo –images of the earth’s surface and earth’s atmosphere by proper processing. By applying digital signal processing and interpreting the images we get dimensional image of the atmosphere . the three dimensions are the 3 axis lengths and the fourth dimension is spectrum of a point location in an atmosphere . since each element in atmosphere has its own specific spectrum. It is possible to interpret constituents of air and a 3D model of motion of pollutants in an atmosphere.

Introduction

Satellites of advanced technology are

You May Also Find These Documents Helpful

  • Satisfactory Essays

    Satellites are equipped with what are called radiometers. They measure electromagnetic energy that the Earth and the atmosphere reflect, scatter, transmit, and emit. The two types of radiometers measure visible light from the sun and radiation emitted from the earth’s surface or its clouds. When the visible light radiometers produce images, they represent sunlight reflected off of objects on the Earth, which could be clouds, water, vegetation or something else. The radiometers measure radiation wavelengths between 10 and 12 microns. When these radiometers produce images, it is representative of heat rather than light, cold is white and hot is black. These are beneficial because it gives information day and night, unlike visual imagery. The IR satellite images are used to tell if clouds are height or low based on temperature, cold means high clouds while warm means low. Knowing cloud heights and temperatures help determine where weather will be coming from, or what will be forming in the future. Visible images help determine cloud types based on their visibility. The visibility is based on the number of water drops in it to reflect light. Knowing cloud types helps determine where rain or storms are happening, where is starts or and where it will end. Less commonly used is water vapor imagery. It can be used in some situations when areas cant be seen visibly or are being covered by clouds hiding the temp…

    • 975 Words
    • 4 Pages
    Satisfactory Essays
  • Powerful Essays

    Air Quality - 1

    • 1412 Words
    • 6 Pages

    Air quality is a measure of the amount of pollutants emitted into the atmosphere and the dispersion potential of an area to dilute those pollutants. It is a massive problem of urban living and remains one of the largest environmental concerns. Spatial dimension relates to how air quality differs between places at different times and under different weather patterns. Increasing population and demand for more goods puts greater pressure on air quality. The human population’s interaction with the environment relates to the ecological dimension. In terms of air quality this relates to the impacts of increased gases and particles associated with transportation, industrial activities, smoking, dust storms from over grazing on marginal land, bush fires and the burning fossil fuels . Many of these activities cause increases in carbon monoxide, ozone, sulphur dioxide, nitrogen dioxide, lead and particles in the atmosphere. People get health problems due to these increases. For example, excessive carbon monoxide levels in the blood stream reduce its ability to transport oxygen. This in turn causes headaches and tiredness.…

    • 1412 Words
    • 6 Pages
    Powerful Essays
  • Powerful Essays

    SCIN137 Syllabus

    • 3033 Words
    • 19 Pages

    structure of the atmosphere to weather patterns to air pollution. A survey course such as this might…

    • 3033 Words
    • 19 Pages
    Powerful Essays
  • Better Essays

    Asthma and Air Pollution

    • 1925 Words
    • 8 Pages

    Air pollution is the initiation of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms, or damages the natural environment into the atmosphere. Air pollution occurs when the air contains gases, fumes, dust, or other harmful agents. According to Morgan (2003), air pollution was not a problem until the 19th century and Industrial Revolution because pollution was readily diluted in the atmosphere (Morgan, Environmental Health, 2003, p. 247). Air pollution occurs in many forms but can generally be thought of as gaseous and particulate contaminants that are present in the earth 's atmosphere (Air Pollution - Its Nature, Sources, and Effects, 2013). Natural sources of air pollution include forest fires, dust storms, and volcanic eruptions (Morgan, Environmental Health, 2003, p. 249).…

    • 1925 Words
    • 8 Pages
    Better Essays
  • Good Essays

    Air pollution is the introduction into the atmosphere of chemicals, particulates, and biological matter that cause harm to humans, other living organisms, or cause damage to the natural environment. Stratospheric ozone depletion (contributed to air pollution) has long been recognized as a threat to human health as well as to the Earth’s ecosystems. The Earth is capable of cleaning itself of a certain level of pollution, but man-made pollutant have become too numerous for the Earth’s natural mechanisms to remove. We are seeing the results of this overload in the form of acid rain, smog, and the variety of health problems that can be contributed to our environment. (Godish)…

    • 503 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Oklahoma Absolute Location

    • 3131 Words
    • 13 Pages

    * The next image is from one of the satellites orbiting the Earth. The National Weather Service uses these types of images to figure out weather changes coming in the next couple of days.…

    • 3131 Words
    • 13 Pages
    Good Essays
  • Good Essays

    2NO + O2 → 2NO2 (nitrogen dioxide) – photochemical smog (causes problem in the environment)…

    • 3147 Words
    • 13 Pages
    Good Essays
  • Powerful Essays

    Nielsen, J. and Schäffer, V., “Resource Planning under Uncertainty (in Danish)”, Thesis Department of Construction Management, Technical University of Denmark, 1991.…

    • 3612 Words
    • 15 Pages
    Powerful Essays
  • Good Essays

    Externalities Assignment

    • 681 Words
    • 3 Pages

    As we all start our day in the morning, the first thing we do is step outside and watch the sky or the colored sun. However, we tend to forget that we don’t actually get to see the natural colors of the sun through all the layers of pollution within the air. We are not just deprived of seeing this beautiful sight but also there is an increase in diseases, infections and death that is caused by pollution. One such pollution is air pollution, which is the presence in the atmosphere of harmful gases, liquids, or solids.…

    • 681 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    Air pollution: When some foreign particles enters the air and deteriorate its quality is known as air pollution. These particles can be produced naturally or manmade. Dust storms, Bacteria and gases of volcanic eruptions are examples of natural’s sources of pollutants. Gases released from the automobile and the chimneys are the example of manmade pollutants.Major Air pollutants: Carbon monoxide (CO), Ozone (O3), Nitrogen dioxide (NO2), Sulphur dioxide (SO2) and lead.…

    • 1602 Words
    • 7 Pages
    Powerful Essays
  • Powerful Essays

    In the past few years interest in air quality monitoring has increased, specifically pertaining to the identification of pollution sources and their information needed to implement air pollution control programs. Since observing the quantity of various pollutants emitted from all potential pollution sources is virtually impossible, receptor models are used to analyze concentrations of pollutants or particles measured over time in order to gain insight concerning the unobserved pollution sources. Multivariate receptor modeling aims to identify the pollution sources and assess the amounts of pollution by resolving the measured mixture of chemical species into the…

    • 4212 Words
    • 17 Pages
    Powerful Essays
  • Best Essays

    A wide variety of free software is available for public use. To successfully decide which software to use, it is important to understand exactly what needs to be modeled and what output is desired. Models exist for small local scales and larger planetary scales, for dispersion of primary pollutants (such as NOX) or for secondary pollutants (such as ozone, which NOX can convert into), for steady state emissions of particles (from stacks) or for non-steady state puffs (from chemical releases). Model outputs can predict worst case pollutant concentration at a specific point, expected concentrations based on specific atmospheric conditions at a certain point, or create a three-dimensional graphic showing the concentration of a pollutant within space. For example, the Regional Modeling System for Aerosols and Deposition (REMSAD), a program available from the Environmental Protection Agency (EPA) used to model inert and chemically reactive pollutants over regional scales (including processes that contribute to haze), can not be used be emergency response personnel to quickly setup evacuation zones downwind of a hazardous pollutant release.…

    • 2801 Words
    • 9 Pages
    Best Essays
  • Good Essays

    And most of them are solved without the customer knowing, if it is a small problem the customer doesn’t have to know. However if the problem is major it is the company duty to report back to the customer. Disclosing important information from the customer can result in severe consequences including the impossibility of further deals. Nowadays, the market is a very tough place because of intense competition, everyone is fighting to dominate the market so with a bad move and acting unethically ISI should consider that even though it signed a contract with HTC and short term profit is made. That unfortunate and unethical behavior, “lying” by keeping official the same delivery date although having technical problems, long term relationships with HTC or even new customers might be jeopardized so ISI might lose potential customers and capitalist investors. But if it is the case in every of the satellites imagery company ISI won’t face any problems later, and business will take its regular course. That is why it is better for ISI to disclose the information about the new launch date and stick with the official launch date. ISI should focus on long-term orientation and plan for the future especially in satellite kind of business that why ISI should strive in the future to deliver on time in order to differentiate it self from its competitors.…

    • 1484 Words
    • 6 Pages
    Good Essays
  • Good Essays

    DO3SE Model Analysis

    • 787 Words
    • 4 Pages

    Monthly average of modelled ozone values were consistently higher than the observation at all stations. Model results were somehow seriously overestimated in Nha Be station but relatively better in other stations. However, in term of seasonal variation of ozone that is important for assessment on crops, model seemed to be able to capture the pattern. Higher concentrations were seen in the dry months as compared to the wet months due to higher solar intensity and temperature in addition to the local build-up of precursor emissions. However, the discrepancy can be also affected by the coarse resolution of the model output as compared to the point-based observation station. In the remote site model result seemed to be better than the complex mixed site of emission sources such as in the urban…

    • 787 Words
    • 4 Pages
    Good Essays
  • Better Essays

    Pollution Analysis

    • 2873 Words
    • 12 Pages

    K. Mohanty, M. Misra and L. T. Drzal. "Sustainable Bio-Composites from Renewable Resources: Opportunities and Challenges in the Green Materials World." http://www.springerlink.com/content/g170v8n402341125/…

    • 2873 Words
    • 12 Pages
    Better Essays

Related Topics