Only few researchers introduced that problems or limitations of image fusion which we can see in other section. ![]() The objectives of this paper are to present an overview of the major limitations in remote sensor satellite image and cover the multi-sensor image fusion. The paper is organized into six sections. Section 2 describes the Background upon Remote Sensing under this section there are some other things like remote sensing images remote sensing Resolution Consideration such as Spatial Resolution, spectral Resolution, Radiometric Resolution, temporal Resolution data volume and Satellite data with the resolution dilemma. ![]() Section 3 describes multi-sensors Images there are sub sections like processing levels of image fusion categorization of image fusion techniques with our attitude towards categorization Section 4 describes the discussion on the problems of available techniques. And the conclusions are drawn in Section 5. Text of manuscript should be arranged in the following The term “remote sensing” is most commonly used in connection with electromagnetic techniques of information acquisition. These techniques cover the whole electromagnetic spectrum from low-frequency radio waves through the microwave, sub-millimeter, far infrared, near infrared, visible, ultraviolet, x-ray, and gamma-ray regions of the spectrum. Although this definition may appear quite abstract, most people have practiced a form of remote sensing in their lives. Remote sensing on board satellites techniques, as a science, deals with the acquisition, processing, analysis, interpretation, and utilization of data obtained from aerial and space platforms (i.e. In spaceborne remote sensing, sensors are mounted on-board a spacecraft orbiting the earth. There are several remote sensing satellites often launched into special orbits, geostationary orbits or sun synchronous orbits. In geostationary, the satellite will appear stationary with respect to the earth surface. These orbits enable a satellite to always view the same area on the earth such as meteorological satellites. The earth observation satellites usually follow the sun synchronous orbits. A Sun synchronous orbit is a near polar orbit whose altitude is the one that the satellite will always pass over a location at given latitude at the same local time, such that (IRS, Landsat, SPOT…etc.). There are two basic types of remote sensing system according to the source of energy: passive and active systems. Landsat TM, SPOT-3 HRV) uses the sun as the source of electromagnetic radiation. Radiation from the sun interacts with the surface (for example by reflection) and the detectors aboard the remote sensing platform measure the amount of energy that is reflected. On ERS-2 and RADAR-SAT) carries onboard its own electromagnetic radiation source.
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