Essays on Remote Sensing

A digital image is a numerical representation of (usually binary) a two-dimensional image. It could be of the vector or the raster type. Normally, the phrase “digital image” refers to raster or bitmapped images. Raster images possess a fixed amount of digital values, which are called picture elements or pixels. Every image has a fixed number of rows and columns of these pixels. The pixels are stored in the memory of computers as raster images consisting of arrays of numbers. These are stored and transmitted in compressed formats (Sprawls, 2017). Computers are able to produce descriptive information about a ...

Geography, GIS and Mapping

As the world grows warmer and the population of the earth battles climate change, the tools of the geographer are becoming vitally important in the search for knowledge about our climate and energy demands. Geovisualization, which incorporates many geographical tools, is an important weapon in the geographer’s arsenal in the fight against climate change. Following is a description of the elements which are used to create geovisualizations to provide extensive information for decision makers. Geography is the study of places, landscapes, environments and people. Whether those places relate to the landforms which they comprise, the development of urban ...

Introduction 3

Relationship between Remote Sensing and GIS 3 Increased Interest to Understand the Earth 4 Applications of Geographic Information Systems 5 Mapping Data 5 Proximity Analysis 6 Buffering 7 Finding Clusters 7 Finding the Nearest 7 Disaster Management 7 Crime Statistics 8 Archaeology 8 Health Management 8 Conclusion 9

References List 10

Geographic Information Systems The use of Geographic Information Systems has significantly transformed over the past ten years. GIS has brought the golden age of powerful information technology that enables people to store large sets of data. This technology has also expanded system memories, and the process is affordable to many. Initially, ...

The use of collinearity in imaging is a very versatile technique for image correction. The process is applicable in taking of picture using sensors from above the ground. The science behind the process is helping in converting several images taken into an orthographic image format. The camera does a transformation to a 3 x 3 matrix system which removes relief from the picture and making it machine readable. This form of change does its conversations within the ranges of changes in the X Y and Z axes of telemetry (Han, Guo, and Chou 313-316). The imaging dimensions taken have ...

The Effects of Climate Change on Allergies and Asthma Cases

Since the discovery of global warming or climate change, scientists have been warning the public of the possible implications this phenomenon could bring. They highlight erratic and severe weather patterns, changing ecosystems and the persistence of diseases that cannot easily be treated. While skeptics remain ignorant over these warnings and governments trying to make amends over their national policies, statistics show that these warnings should be taken seriously especially with regards to respiratory diseases such as asthma and allergies. However, it is a question as to what impacts climate change has towards the prevalence on allergies and asthma cases ...

Introduction

Interactions between atmospheric energy and matter and with the surface of the earth play an important role in remote sensing. There is a constant interaction between the surface of the earth, electromagnetic radiation and the atmosphere. This interaction determines the spectral areas through which remote sensing can be done (Bucholtz, 1995, 2769). Electromagnetic radiation is propagated via the earth's atmosphere at the speed of light once it has been generated. Since the earth's atmosphere is not a vacuum, it has a different impact on the wavelength, spectral distribution, speed and direction of radiation.

Scattering

One of the results obtained for ...

Introduction

The discovery of heat loss is a crucial factor in infrastructure maintenance. It is this, essential to map the temperature of the inhabited areas within the Northeastern region of the United States. This is achievable by use of an aerial thermal imagery. The camera having high-resolution facilitates to check the surface temperature of the area.

How to Obtain Thermal Imagery

Aircraft mission planning is attainable via the remote sensing program. Perpendicular photographs are captured through aiming the camera facing the earth surface. The features and objects on the ground can sometimes be challenging to recognize from the manner they are displayed on the photos1

Information Necessary

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Geospatial technology is a very important tool for monitoring and analyzing the effects of human activities on the environment. This form of analysis is very important to scientists, geographers and the government. It helps to determine the nature of damages that man can expose to the environment and therefore prompting for the right action to be taken.

Every track of land in different places on the earth’s surface is unique it its own way. No land remains the same forever. At some point in time, it may undergo some transformation that completely changes it appearance. This research looks at ...