Remote Sensing Essay

1160 words - 5 pages

Aerial photography was the earliest form of remote sensing other
than the telescope. For a long time, this technique relied on the
portion of electromagnetic radiation used by our eyes (the visible
spectrum). Early aerial photography was usually obtained on black and
white film which responded to light over a broad range of visible light.
Later, it was learned that by placing a filter in front of the lens
which would pass only a particular color of light, a black and white
record could be made of the objects reflecting light in that range. For
instance, an aerial photograph of a ...view middle of the document...

Later, a color film was developed which responded to the near
infrared as well as visible colors (except blue). This was called color
infrared film.
1.1.2 Growth of Remote Sensing. Encouraged by these results,
efforts were made to utilize other electromagnetic wavelengths such as
heat infrared, microwave, and radar for remote sensing purposes. Here
the topic becomes complex because the radiation does not behave exactly
as light does and it is not quite as simple to understand as the near
1.1.3 Imaging Satellite Systems. Another important factor in the
development of remote sensing, particularly for ice surveillance, was
the development of satellite systems which routinely return images to
earth. The first of these systems operated in the visible portion of
the spectrum because existing television technology was most easily
applied there. Quickly, however, systems were developed to make use of
other portions of the electromagnetic spectrum. At this time, satellite
remote sensing systems based on radar were being developed.
1.2.1 Source of Electromagnetic Radiation. One of the most important
distinctions among remote sensing systems involves the source of the
radiation used. The easiest example to use is that of a camera. When
a camera is used utilizing sunlight or even ambient light in a room, it
is said to be a passive system. On the other hand, when it utilizes
flash bulbs, it is an active system. That is, an active system provides
CHAPTER V V-2its own radiation. Ordinary radar is an active system, while imaging
near infrared systems are passive systems. Passive systems are used
when there is sufficient illumination of the object of interest to allow
detection. Active systems are used when there is insufficient radiation
and it must be provided. A second reason for using passive systems is
in situations where the radiation given off is not used for imaging
alone, but also quantitatively describes properties of the object.
Thermal infrared is an example here. The radiation measured is related
to the temperature of the object.
1.2.2 Transmission through the Atmosphere. In all these systems
it is necessary for the radiation to pass through the atmosphere (once
for passive systems, twice for active systems). Therefore, it is
sometimes necessary to keep in mind the interaction between the atmosphere
and the radiation. Perhaps the best example of this is the scattering
of blue light by the atmosphere. Blue light is actually scattered out

Other Papers Like Remote Sensing

Space Technology Essay

640 words - 3 pages Space technology is technology[->0] that is related to entering, and retrieving objects or life forms from space[->1].[1] Space Technology is helping us to understand what is beyond Earth. It has already helped us a great deal and we are always discovering more because of it. If we didn't have space technology we might still think that the Earth is flat. "Every day" technologies such as weather forecasting[->2], remote sensing[->3], GPS[->4

Gis Book Chapter 1 Answers Essay

832 words - 4 pages values, determines the number of classes. Quantile— each class contains an equal number of cells. Natural Breaks — classes are based on natural groupings of values. Standard Deviation— amount a cell’s value varies from the mean. a. Distinguish between GIS,GPS,and RS. GIS | GPS | RS | Geographic information science | Global positioning system | Remote sensing | A computer system for capturing, storing, querying, analyzing and

Indian's Dream

749 words - 3 pages strides in theoretical and applied research, an advanced nuclear programme, space remote sensing, biotechnology, electronics and oceanography. As a matter of fact, in the new world of information technology, India has struck the lucrative relation between science and economics. India has conducted two sets of underground nuclear tests in Pokhran, in the Rajasthan desert. The first was on 18 May, 1974 and the second, a series of five tests on 11 and 13

Prolonging the Lifetime of Wireless Sensor Network

1999 words - 8 pages with the neighboring nodes. This requires data exchange between sensor nodes over an ad hoc wireless network with no central coordination medium. There are various phenomena in our environment to be sensed by the sensor nodes. Examples include enemy detection and tracking for military purpose, machine monitoring and inventory control system, remote sensing and environmental monitoring. The sensors are typically battery- powered and have limited

Gate Barrier

526 words - 3 pages , methodology, etc. | | | |(b) Sensors: Pressure or weight sensors Qty 01, LDR 02. Weight sensors | | |for sensing weight of the vehicle. Expected Expenditure 275

Minds Are Open Only When Hearts Are Open

591 words - 3 pages Engineering o Integrated Water Resources Management • Master of Technology in remote sensing Faculty of Mechanical Engineering: • Bachelor of Engineering in o Mining Engineering o Material Science and Engineering o Mechanical Engineering o Printing Technology o Production Engineering o Aeronautical Engineering o Industrial Engineering o Manufacturing Engineering • Bachelor of Technology in o Automobile Engineering o Rubber and Plastic

Nintendo Case

2020 words - 9 pages solved appropriately. The motion sensing wireless technology, on the other hand, only need a little pinch by the resident techies to be able to accommodate the new accessory which will replace the traditional remote-like controller. Concept Development Wii Z is an innovative gaming console combining the intriguing motion sensing technology of the original Wii with every hardcore gamer’s bestest friend-- a keyboard PC. Instead of a remote, a motion

New Strategies and Engineering Technologies for Dealing with Volcanic Ash

1785 words - 8 pages . References • Sherwell, P 2010, “Iceland volcano: an eyeful of Eyjafjallajokull”, the telegraph, viewed 25/03/2011, . • Hayward, K 2011, ‘Under the ash cloud’, RAeS volcanic ash conference report, Aerospace international Volume 38, p. 18 – 21. • Ellrod, G 2010, ‘remote sensing of volcanic ash’, NWA remote sensing committee, viewed on 22/03/2011, . • Barnes, C 2011, ‘what is AVHRR

Nintendo Wii Sustaining Competitive Advantage

1225 words - 5 pages Summary Nintendo entered the video game market in 1979 and has been a top competitor ever since. In 2006, with the release of the Nintendo Wii, they secured their competitive advantage in the video game industry. The Wii was created to establish a new standard in game control, using innovative and unprecedented interface with the Wii remote. The remote’s motion sensor capabilities allowed the user to interact and manipulate objects on the

Scada and Gis for Drinking Water Distribution System Monitoring and Response

851 words - 4 pages Position Paper for Beyond SCADA: Networked Embedded Control for Cyber Physical Systems workshop SCADA and GIS for drinking water distribution system monitoring and response: critical gaps Shannon L. Isovitsch1 and Jeanne M. VanBriesen2 SCADA is frequently used to manage and control drinking water treatment systems. In this application, SCADA systems perform remote monitoring and operations control along with data management and storage. SCADA

Case 1: Segmenting And Targeting The Electric Car Market

972 words - 4 pages keep or sell at a premium. If not, at least the investors have an electric car, something for their money. The acid test is how many of the original trialists want to continue to lease the eCar at the proposed market price? Technicians can check all the systems in the company car park using remote sensing of batteries, charging system, motors etc. The idea is to target a small market segment niche, service it superbly and own it, totally. But to do this you have to be very early in the market with a very low priced vehicle.

Related Essays

From One Controlller To Another Essay

337 words - 2 pages purpose, motion-sensing game controller is Nintendo’s Wii remote. Shaped like a television remote control and operated with one hand, the Wii Remote uses Bluetooth wireless technology to communicate with the Wii game console (Bloom 56-59). Game controllers are used primarily to direct movement and actions of on-screen objects. Two popular types are gamepads and motion-sensing game controllers. Games become more enjoyable everyday with the use of

Change Detection Essay

3632 words - 15 pages ).....................11 IV. Image Differencing.....................................12 V. Change Vector Analysis (CVA) Conclusion....................................................14 References....................................................15 Introduction Remote sensing change detection has been defined as the process of identifying change in the state of an object or phenomena through the detection of differences between two or

Spectrum Sensing In Cognitive Femtocell Networks

3995 words - 16 pages used to share information about the channel versus when standalone decisions are taken about the state of the channel. Simulation results indicate superior performance of the cooperative mode in terms of the number of observed hidden nodes and probabilities of detection and false alarm. Keywords—Femtocell; Cognitive Radio; Dynamic Spectrum Access; Energy Detection; Hidden Node Problem; Spectrum Sensing; IEEE 802.22. I. INTRODUCTION Recent

Drought And Global Climate Change Essay

749 words - 3 pages drought events, which have devastatingly affected society and environment (Shamsipour et al., 2008). Therefore, the study of drought needs several sources of datasets. In other words, the design of a planning project for a region for sustainable development, the acquisition of updated data is critical, particularly for countries with arid to semi-arid climates. The recent innovations in remote sensing methods have brought new solutions to study