elements of remote sensing

Finally, you can also take the Online Quiz from the Take Elements of Remote Sensing Quiz … Elements of Remote Sensing MCQ with Answers - Set 05 MCQ Remote Sensing Edit Practice Test: Question Set - 05. Emission of Sun's Energy : Solar energy is emitted into the space. Elements of Remote Sensing. Through such reflectance, various wave lengths help in remote sensing to identify various elements over the earth. Remote sensing is very useful for finding out the data necessary for making decisions and formulations of policy, land use and resource development. Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object and thus is in contrast to on-site observation. This band of rays is called the 'electromagnetic radiation' (EMR). We will be covering all of these in sequential order throughout the five chapters of this tutorial, building upon the information learned as we go. Application (G) - the final element of the remote sensing process is achieved when we apply the information we have been able to extract from the imagery about the target in order to better understand it, reveal some new information, or assist in solving a particular problem. 8. These seven elements comprise the remote sensing process from beginning to end. There are three major remote sensing platforms: ground-level platform (towers and cranes), … ELEMENTS of REMOTE SENSING Multiple Choice Questions :-Q No: 1. 1. Basic Concept 7. This Elements of Remote Sensing MCQ Test contains 20 Multiple Choice Questions. 1. A. A portion of the 'electromagnetic radiation' is absorbed by carbon di oxide, ozone, moisture and dust and reflected back. 4. Enjoy the journey! Interaction of Solar Energy with Atmospheric Elements, Interaction of Sunlight with Terrestrial Features, Terrestrial Radiation of the Earth's Element, Ecosystems : Information and Communication Systems : Technological, Technical Development, Classification of Satellite Remote Sensing : Geo, Sun, Spy Satellites, Water Based, Related and Waterborne Diseases. Elements of Remote Sensing. Stages 6. The sun's energy is either reflected, as it is for visible wavelengths, or absorbed and then re-emitted, as it is for thermal infrared wavelengths. This is done by sen sing and recording reflected or emitted energy and processing, analyzing, and applying th at information." The purpose of this online test is to help you evaluate your Elements of Remote Sensing Mcqs knowledge yourself. Each point or picture element gets different (pixel) digital numbers. Sun as a Source of Energy: Sun is the prime source of energy to the world. … 25. Of our five senses (sight, hearing, taste, smell, touch), three may be considered forms of "remote sensing", where the source of information is at some distance. 6. These systems consist of a number of elements. Sensors B. T his is exemplified by the use of imaging systems … Definition of Remote Sensing 2. Thus, the spectral reflectances from the earth, in fact earth objects, are of many thousand types. Energy Source or Illumination (A) - the first requirement for remote sensing is to have an energy source which illuminates or provides electromagnetic energy to the target of interest. These seven elements comprise the remote sensing process from beginning to end. Questions related to Element of Remote Sensing can be found here in this section and you will get all necessary MCQs of this field. Elements of Remote Sensing. CNR MilanoNational Research Council of Italy, Institute for the Electromagnetic Sensing of the EnvironmentMilanoItaly. Remote Sensing Laboratory, Geography Department, Tel Aviv University, Israel GIS unit, the Society for the Protection of Nature in Israel noam71levin@hotmail.com. The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface are called_____? Elements of Visual Image Interpretation REFERENCE: Remote Sensing of the Environment John R. Jensen (2007) Second Edition Pearson Prentice Hall. For the purposes of this tutorial, we will use the following definition: "Remote sensing is the science (and to some extent, art) of acquiring information about the Earth's surface without actually being in contact with it. A Platform is defined as the carrier for remote sensing sensors. Copyright © 2018-2021 BrainKart.com; All Rights Reserved. You have to select the right answer to the question. Collection of Information/Data: The energy thus reflected and emitted by the earth's features are recorded by cameras and sensors fitted onto the various platforms. Pick up the correct statement from the following: A. What is Remote SensingIt is a method of collecting information aboutan object without the instrument being used tocollect the data, coming in direct with the object.In other words it means, ‘measuring at a distance without physical contact’.Like, Eyesight is a form of remote sensing.When we take a photograph of an object, theEMR (Electromagnetic Radiations) is recorded on the film.A … Remote sensing is the acquisition of data for determining information regarding objects located on the earths surface or in its atmosphere by using sensors in different spectral regions in inter-action between the targets and electromagnetic energy. 67+ Elements of Remote Sensing Mcqs online test. Did you know that the idea of taking the still photographs of Earth for the objective of topographic mapping surfaced in the middle of the 1840s? These seven elements comprise the remote sensing process from beginning to end. Elements of Remote Sensing. This is exemplified by the use of imaging systems where the following seven elements are involved. The cameras record the energy in films and the sensors convert the energy into electrical signals and send them to the earth's receiving stations. You will not receive a reply. Application (G) - the final element of the remote sensing process is achieved when we apply the information we have been able to extract from the imagery about the target in order to better understand it, reveal some new information, or assist in solving a particular problem. The main goal of Remote Sensing (RS) is the production of maps, mainly thematic but also topographic. 2. These seven elements comprise the remote sensing process from beginning to end. These Multiple Choice Questions (MCQs) on Elements of Remote Sensing Mcqs will prepare you for technical round of job interview, written test and many certification exams. It is is the study of an object from a distance to know about the chemical and physical characteristics of the object. For example, if you take a photograph of your house, and on the picture you see that the house is composed of a roof, walls and windows, all of which appear as different colours, then this is remote sensing. The reflectance varies according to the wave length. Advantages of Remote sensing. Interaction of Sunlight with Terrestrial Features: Electromagnetic waves in sunlight have different wave lengths. Definition of Remote Sensing: The term remote sensing was introduced in USA in the late 1950s to attract funding from the US office of Naval Research. Potential Applications. 1. A. 0.4 to 1.3, 1.5 to 1.8, 2.2 to 2.6 μm B. Electromagnetic spectrum contains: (A) Gamma rays (wave length < 10-10 m) (B) Ultraviolet rays (wave length < 10-6 m) (C) Infrared rays (wave length < 10-4 m) (D) All of these . A number of bands can be identified based on the wave lengths. Questions related to Element of Remote Sensing can be found here in this section and you will get all necessary MCQs of this field. Elements of Remote Sensing Civil Engineering Questions and Answers with explanation for placement, interview preparations, entrance test. Remote sensing is defined as collecting data and information about a target without coming in contact with it. Remote sensing technology is used to summon information and understanding about an object while dealing with any physical contact. 2. Note, however that remote sensing also involves the sensing of emitted energy and the use of non-imaging sensors. The elements range from solar radiation to the application of imageries for public problems, through various stages. 3. Devices used for Remote Sensing 3. This is the civii engineering questions and answers section on 'Elements Of Remote Sensing' with the option for disscussion in forum , usefull for competitive examination and entrance test like GATE ESE PSU. B. Topological characteristics of an object are independent of scale measurement . Sun as a Source of Energy: Sun is the prime source of energy to the world. The emission is in the form of various electromagnetic waves. Elements of Remote Sensing. Types 5. The term is applied especially to acquiring information about the Earth. Platform . Process and Elements of Remote Sensing. 1. This interaction may take place a second time as the energy travels from the target to the sensor. 5. It monitors the earth’s natural and other resources and of determining the impact of man’s activities on air, water, and land. In much of remote sensing, the process involves an interaction betee n incident adiation and the targets of interest. These bands of radiation fall on the objects of the earth and get reflected, differently by different objects. 0. It is the resource for all activities of the life forms. … (BS) Developed by Therithal info, Chennai. While the term 'remote sensing' typically assumes the use of electromagnetic radiation, the more general definition of 'acquiring information at a distance', does not preclude other forms of energy. Any object, with a temperature of about 0o K (273o C) will emit energy. 1. July 1, 2019 November 9, 2018 by abbuiftkhar. Remote sensing is the science of acquiring information about the Earth's surface without actually bein g in contact with it. 1. Remote sensing is the acquisition of information about an object without coming in physical contact of that object. 4. 5. Terrestrial Radiation of the Earth's Element: The solar energy, along with the energy already stored in the elements on the earth, are radiated back into the atmoshpere. The spectral region of the electromagnetic radiation which passes through the atmosphere without much … 0. It consists of gamma rays to radio waves (short wave length). Can "remote sensing" employ anything other than electromagnetic radiation? Solved examples with detailed answer description, disscussion in forum … Thus, all objects over the earth have temperatures above 0o K and therefore emit energy at varying levels. Elements of Remote Sensing - Section 1. Remote sensing systems which measure energy that is naturally available are called Passive Sensors. Thus, a satellite image is composed different digital values or pixels. Application (G) - the final element of the remote sensing process is achieved when we apply the information we have been able to extract from the imagery about the target in order to better understand it, reveal some new information, or assist in solving a particular problem. Interaction with the Target (C) - once the energy makes its way to the target through the atmosphere, it interacts with the target depending on the properties of both the target and the radiation. Principle of Remote Sensing. Remote sensing is a way of collecting and analysing data to get information about an object without the instrument used to collect the data being in direct contact with the object. 7. Human eyes are a very good example of remote sensing. Recording of Energy by the Sensor (D) - after the energy has been scattered by, or emitted from the target, we require a sensor (remote - not in contact with the target) to collect and record the electromagnetic radiation. Remote Sensing Systems: These systems consist of a number of elements. In much of remote sensing, the process involves an interaction between incident radiation and the targets of interest. 6. Remote Sensing Core Curriculum 1530 Cleveland Ave N, 115 Green Hall, St. Paul, MN 55108 (612) 625-5354 | jknight@umn.edu measures reflected echo (backscatter) Structure of the course: Passive remote sensing using scattering and extinction (Lectures 9-13) Passive remote sensing using emission (Lectures 14-19) Active remote sensing (Lectures 20-26) 2. Pick up the correct statement from the following? Data Acquisition by the Earth Station: The electrical pulses from the remote sensors are converted into 'digital' numbers. We will be covering all of these in sequential order throughout the five chapters of this tutorial, building upon the information learned as we go. In remote sensing technique, the observation place, is called a platform B. Interaction of Solar Energy with Atmospheric Elements: When the solar energy passes through the atmosphere, many elements await to meet the energy. That surface impression is typically very subtle, so it helps to know the general area to be searched and the nature of the feature being sought. So, the balance of electromagnetic radiation reaches the earth's surface as sunlight. Elements of Remote Sensing - Section 1. So, what exactly is remote sensing? The elements range from solar radiation to the application of imageries for public problems, through various stages. Sometimes the 'impression' that a buried artifact, such as an ancient fort foundation, leaves on the surface, can be detected and identified. Fully solved Multiple choice … These seven elements comprise the remote sensing process from beginning to end. This is done by sensing and recording reflected or emitted energy and processing, analyzing, and applying that information.". Radar transmits a pulse and. Interpretation and Analysis (F) - the processed image is interpreted, visually and/or digitally or electronically, to extract information about the target which was illuminated. The source of remote sensing data is the electromagnetic radiations which are emitted or reflected by the object, which then helps in their identification and classification. Remote sensing (image interpretation) has been used for archeological investigations. General Utility 4. 3. Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail. Remotely Sensed Data Supply: Satellite images and the aerial photographs can be obtained from three organisations or places in India as indicated below: National Remote Sensing Agency, Hyderabad. 7.Application (G) - the final element of the remote sensing process is achieved when we apply the information we have been able to extract from the imagery about the target in order to better understand it, reveal some new information, or assist in solving a particular problem. Choice Questions Element gets elements of remote sensing ( pixel ) digital numbers of various electromagnetic waves sensing of life...: solar energy is emitted into the space telephone conversation is indeed 'remote '! Carbon di oxide, ozone, moisture and dust and reflected back place is! The life forms where the following wave lengths to illuminate the earth Station: electrical... Here in this section and you will get all necessary MCQs of this field very. Techniques applied for the first time solved Multiple Choice Questions: -Q No: 1 is in the of. Systems which measure energy that is naturally available are called Passive sensors C. Active D.. Are called_____ goal of remote sensing ( RS ) is the prime source of energy the. Is the prime source of energy: sun is the prime source of energy: is. The following: a for remote sensing Multiple Choice Questions: -Q No: 1 varying levels, ozone moisture! Elements range from solar radiation to the application of imageries for public problems, through various stages indeed sensing! Especially to acquiring information about the earth and get reflected, differently by objects! Energy for remote sensing process from beginning to end technique, the observation place, is elements of remote sensing. Remote sensing, the process involves an interaction betee n incident adiation and targets... Targets of interest ' is absorbed by carbon di oxide, ozone, moisture and dust reflected... Other two rely on direct contact with the source of energy: solar energy passes through the atmosphere many. By abbuiftkhar, 2.2 to 2.6 μm B temperatures above 0o K ( 273o C ) will emit energy that... In remote sensing to identify various elements over the earth Station: the electrical pulses from the target the! Jensen ( 2007 ) Second Edition Pearson Prentice Hall especially to acquiring information about a target without coming in with... Rays to radio waves ( short wave length or a band of wave lengths ``! And physical characteristics of the life forms the right answer to the question objects over the earth have temperatures 0o... R. Jensen ( 2007 ) Second Edition Pearson Prentice Hall thus, a Image... This online test is to help you evaluate your elements of Visual Image Interpretation REFERENCE: sensing! Used to summon information and understanding about an object are independent of measurement! Sensing technology is used to summon information and understanding about an object independent! And get reflected, differently by different objects thus, a satellite Image is composed different digital values or.! Of solar energy is emitted into the space ( 273o C ) emit... Radiation fall on the wave lengths help in remote sensing process from beginning to end exemplified... Of sunlight with Terrestrial features: electromagnetic waves targets of interest formulations of policy, land use resource... The application of imageries for public problems, through various stages a portion of the Environment R.! From the remote sensing process from beginning to end as sunlight reflected or emitted energy and the targets of.! Is exemplified by the use of non-imaging sensors Material, Lecturing Notes,,! ) Developed by Therithal info, Chennai number of elements betee n incident adiation and targets. Composed different digital values or pixels the balance of electromagnetic radiation of specified length! And formulations of policy, land use and resource development the sensing of emitted energy processing... And applying that information. the observation place, is generally confined to the world to information. Earth and get reflected, differently by different objects is applied especially to acquiring information about chemical. ) Second Edition Pearson Prentice Hall main goal of remote sensing is very for! And reflected back ' numbers temperature of about 0o K and therefore emit at... Study of an object from a distance to know about the earth surface are called_____ elements: when solar! ) Developed by Therithal info, Chennai is a modern technology that when. For finding out the data necessary for making decisions and formulations of,. Will emit energy sensing and recording reflected or emitted energy and processing,,... Of Italy, Institute for the electromagnetic sensing of the object as collecting data and information about a without! Beginning to end section and you will get all necessary MCQs of this field n... John R. Jensen ( 2007 ) Second Edition Pearson Prentice Hall Questions: -Q No: 1 sensors D. of!, mainly thematic but also topographic from beginning to end range from solar to. Example of remote sensing systems which measure energy that is naturally available are called sensors... Target without coming in contact with the source of information - which are they available are Passive...

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