Remote sensing is the science of gathering data from space, usually from satellites, about objects or regions.
Remote sensing is the science of gathering data from space, usually from satellites, about objects or regions. … Remote sensors can either be active or passive. The external stimuli are responded by passive sensors. They record natural energy, which is reflected or refracted from the surface of the Earth.
About and Info:
Developer: Balloonist G. Tournachon
Developed early in the 1840s.
With computer software, recognized as a remote sensing program, remote sensing data is processed and analyzed. There’s a wide range of proprietary and open source applications for remote sensing data processing.
- Tools for remote sensing perform multiple functionalities including:
1.Change Detection — Determination of image changes taken at various times of the same region
2. Orthorectification — Warp the image to its earthly position
3.Spectral analysis — Use non-visible parts of the electromagnetic spectrum, for example, to determine if a forest is safe
4.Image Classification — Categorizing reflective pixels into various types of land cover (e.g. Supervised classification, Unsupervised classification, and Object-Based classification).
Most remote sensing applications, such as GDAL and OSSIM, are developed using popular remote sensing toolkits.
Types of Applications for remote sensing:
1.Geomatica, PCI
2.GIS SAGA (Open Source)
3.Gis TNTmips, MicroImages, USA
4.IMMAGINE ERDAS
5.UPDATE, Web Terre, etc..
Features :
1. Large wildfires can be mapped out of space so that rangers can see a much larger area than the surface.
2. Tracking clouds to help forecast the atmosphere or watch volcanoes erupt, and helping to monitor floods of snow.
3. Tracking population development and improvements in agriculture or woodland over a period of many years or decades.
4.Discovery and exploration of the ocean floor’s rugged topography (e.g., huge mountain ranges, vast canyons, and ocean floor “magnetic stripes”).
Working Process:
Remote sensing mechanism
Remote sensing is the mechanism by which the physical properties of an environment are observed and tracked by analyzing it's reflected and released radiation at a distance (usually from satellite or aircraft). Unique cameras capture images that are electronically detected, allowing researchers to “see” information about the earth.
- Remote sensing provides repeated coverage that is helpful when gathering data on diverse topics such as climate, agricultural fields, etc.
- Remote sensing allows fast data collection over a range of scales and resolutions.
- Remote sensing helps in weather forecasting.
- Remote sensing for finding locations for the military.
Devices which supports by remote sensing:
- Phones and Tablets
- Laptops and Desktops.
- Sensors
Remote sensing Prize:
Remote sensing costs are strong up to US$ 24 000–$43 000.
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