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Remote sensing is the acquisition of information about an object or phenomenon, without making physical contact with the object. In modern usage, the term generally refers to the use of aerial sensor technologies to detect and classify objects on Earth (both on the surface, and in theatmosphere and oceans) by means of propagated signals (e.g. electromagnetic radiation emitted from aircraft or satellites)
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Why would a mapmaker use active remote sensing instead of passive remote sensing?
Active remote sensing uses its own electromagnetic radiation and use microwaves. It maps areas hard to map.
What is instantaneous field of view?
The instantaneous field of view is the solid angle subtended by a single pixel of the imaging system. In remote sensing, one can use small angle approximations so that ifov = dx / f * dy / f. dx and dy are the physical dimensions of the pixel.
How would you define library filing?
define library filing
Can you give 3 sentences using the word remote?
The house was located in a remote area of the desert . The chances of being rescued at sea were , unfortunately for the sailor , remote at best . She found herself in a remote part of town that was rarely frequented by any police patrols .
What is difference of metric photogrammetry and interpretative photogrammetry?
PHOTOGRAMMETRY METRIC PHOTOGRAMMETRY INTERPRETATION Measuring from ground position, elevation distances, areas and volumes. Existing in a qualitative manner like timber stands, water pollution, soils, geological formations, crops and military interpretation. Determine relative locations of points, scales, angle and sizes or shapes of objects. Recognizing and identifying objects on aerial imagery and judging their significance. Preparation of planimetric and topographic maps from photographs. To analysis photographic images Photographs taken from airborne vehicle(aerial) and terrestrial photos(earth-base) Gathered data from a wide variety of sensing instruments such as remote sensing
Importance of remote sensing in civil engineering?
remote sensing
When was Remote Sensing Center created?
Remote Sensing Center was created in 2006-09.
When was Indian Institute of Remote Sensing created?
Indian Institute of Remote Sensing was created in 1966.
When was Pakistan Remote Sensing Satellite created?
Pakistan Remote Sensing Satellite was created in 2011.
What is a observation of earth remote-sensing satellite?
Explain how the remote sensing satellites examined the earth from the space?
What are some non-satellite remote sensing technology?
What are some non-satellite remote sensing technology?
What are Remote Sensing observational platforms?
The platforms that harbor remote sensing sensors (eg. cameras) are called remote sensing platforms. In earlier days, during military reconnaissance, pigeons attached with cameras were made to fly over areas of interest. In this case the platform is the bird. Balloons, airplanes and satellites that carry remote sensing sensors are examples of remote sensing platforms.
Why would amapmarker use active remote sensing instead of passive remote sensing?
A mapmaker might use active remote sensing over passive remote sensing because active remote sensing provides its own source of energy to illuminate the target, allowing for more control over the data collected. This can result in better resolution and accuracy in mapping features of interest.
Why would a mapmaker use active remote sensing instead of passive remote sensing?
Active remote sensing uses its own electromagnetic radiation and use microwaves. It maps areas hard to map.
What are the main characteristics of microwave remote sensing and optical remote sensing?
Optical remote sensing is affected by cloud covers , rain etc but microwave remote sensing is not.However the optical sensors always need sun as a source of illumination while active microwave sensors don't need.
What is the opposite from remote sensing?
The opposite of remote sensing is close-up sensing, where data is collected from objects or phenomena in close proximity to the sensor or observer. This type of sensing involves direct contact or nearness to the subject being observed, as opposed to remote sensing which involves collecting data from a distance.
Why are satellites used in remote sensing?
remote sensing satellites develop highly detailed and accurate maps on earths surface.
