Remote sensing uses electromagnetic radiation to gather information about a place from a distance. This data is fed into a GIS system to analyze it. GIS remote sensing provides data on events and landmarks, aiding in project planning. There are two types of remote sensing: passive and active, and different wavelength regions are used. A remote sensing system includes an energy source, sensors, and a platform.
Remote sensing is a process of using reflected and emitted electromagnetic radiation to gather information about a particular place or area from a distance. This data includes information about places and events occurring on the surface of the Earth provided in geographic and spatial coordinates. This data is then fed into a geographic information system (GIS), where it is correlated and analyzed by the software and sent to users of the software.
In a sense, GIS remote sensing works like a map of the study area, but it is much more. GIS remote sensing provides data on important events and coverage of landmarks such as forests, soil, water and vegetation. By having all this information readily available, you can correlate data to uncover connections between events and places that may not be visible to the naked eye.
GIS remote sensing can aid in project planning, from helping build the next flood wall in a flood-prone area to ranking a nation’s wetlands from lowest to highest sensitivity to runoff. GIS remote sensing is done in many ways with many different technologies. There are airplanes and satellites circling the globe with cameras trained on the earth’s surface. When GIS remote sensing began, the only valuable information was within the visual range of light. New technologies have made other ranges more available.
Two types of GIS remote sensing are the result of energy sources. In passive remote sensing, the only electromagnetic radiation detected is that reflected from natural sources. In active remote sensing, sensors are used to detect electromagnetic radiation reflected by objects radiated by unnatural or man-made energy devices.
Not only is GIS remote sensing typed by energy source, but it is also classified using wavelength regions. The regions used are visible and reflective infrared, thermal infrared and microwave. Each of these wavelengths can pick up different sources that cannot be detected by visual light or other wavelengths.
The main parts of a remote sensing system will include an energy source, passive system sensors to collect reflected light from the sun and earth materials, and active system sensors to record light emitted by man-made energy sources such as radar. Some sort of platform is needed. It should include a vehicle to transport the sensors, a signal data processor, a signal data detector, and a master organization to perform all stages.
Protect your devices with Threat Protection by NordVPN
