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Remote Sensing

Almost every major manufacturer of high technology, ranging from computers to industrial testing devices and consumer products, is actively pursuing the application of microelectronics, or integrated circuits, the inner part of the system in developing a higher field of technology. The scientist of Cassini-Huygen Satellite uses its high technology to enhance the process of gathering information in land, water and space territories. This company successfully launched satellites to capture space images and acquire geospatial data using remote sensing concept.

Remote Sensing has contributed a lot to Cassini-Huygen in many aspects. It can be applied in medicine, vegetation production, ocean exploration, land surveys and many more. Perhaps, remote sensing is applicable in everything. The basic example of remote sensing is a person viewing his or her computer monitor. The person is actively engaged in remote sensing because a physical quantity (light) emanates from that screen, which is a source of radiation. The radiated light passes over a distance, and thus is “remote” to some extent, until it encounters and is captured by a sensor (your eyes).

Each eye sends a signal to a processor (your brain) which records the data and interprets this into information. Remote sensing is a subset of Geophysics. It uses Electromagnetic Radiation as a sensing medium to acquire and interpret data from which to extract information about features, objects, and classes on the Earth’s land surface, oceans, and atmosphere (and, where applicable, on the exteriors of other bodies in the solar system, or, in the broadest framework, celestial bodies such as stars and galaxies).

INTRODUCTION Since the early days of monitoring the Earth, the development of computer-aided techniques for reliably identifying many categories of surface features within a remotely sensed scene, was more advance. The surveys of the chief satellite programs are depended on remote sensors to gather information about the Earth. By now there has been full realization that the best current and future uses of most Earth-observing data is from satellites or astronauts.

“Remote Sensing involves gathering data and information about the physical “world” by detecting and measuring radiation, particles, and fields associated with objects located beyond the immediate vicinity of the sensor device, a technology for sampling electromagnetic radiation to acquire and interpret non-immediate geospatial data from which to extract information about features, objects, and classes on the Earth’s land surface, oceans, and atmosphere, even in other bodies in the solar system, or, in the broadest framework, celestial bodies” (Technical & Historical Perspective of Remote Sensing).

Remote Sensing involves the detecting and measuring of electromagnetic energy (usually photons) emanating from distant objects made of various materials, so that the user can identify and categorize these objects. It is also involved in medicine. Both active and passive sensors are used and the usual product is an image. Electromagnetic radiation is the sensing medium in most analyses. The application of this technology is to see into the body without having to be invasive.

It can produce static images, but other techniques can display actual features being examined in dynamic, and real time images which show the functional movements of the organ inside the body. Design and Development Remote Sensing was designed for many purposes. There are many types of remote sensing and it has various applications depending on its kind and concept. It plays a vital rule and contributed a lot in the advancement of technology.

It is developed to meet the manpower needs of less cost and efficient means of communication, acquisition and measurement of spatially distributed data and its interpretation. One of the most widely used concept of remote sensing is Satellite sensors which observes not only wavelengths of visible light, they also precisely measure wavelengths of radiant energy that our eyes cannot see, such as microwaves, ultraviolet rays, or infrared light.

If scientists know how certain objects (like cirrus clouds or windblown dust) typically absorb, reflect, and emit particular wavelengths of radiant energy, then by using satellite sensors to precisely measure those specific bands of the electromagnetic spectrum, scientists can learn a lot about the Earth’s atmosphere and surface. Remote sensors allow us to observe and quantify key climate and environmental vital signs such as temperature, ozone concentrations, carbon monoxide and other pollutants, water vapor and other greenhouse gases, cloud types and total cloud cover, aerosol types and concentrations, radiant energy fluxes, and many more.

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