LandsatMSS (Multi-Spectral Scanner), on LANDSAT-1 to five. Being one of the older era sensors, routine data acquisition for MSS was terminated in late 1992. The resolution of the MSS sensor was approximately 80 m with radiometric coverage in four spectral bands from the seen inexperienced to the close to-infrared (IR) wavelengths. Solely the MSS sensor on Landsat three had a fifth band in the thermal-IR.

Ikonos adalah satelit milik Area Imaging (USA) yang diluncurkan bulan September 1999 dan menyediakan information untuk tujuan komersial pada awal 2000. Ikonos adalah satelit dengan resolusi spasial tinggi yang merekam knowledge multispektral 4 kanal pada resolusi 4 m (citra berwarna) dan sebuah kanal pankromatik dengan resolusi 1 m (hitam-putih). Ini berarti Ikonos merupakan satelit komersial pertama yang dapat membuat image beresolusi tinggi.

For Sever, the ability of that picture modified the direction of his analysis. Originally a desert archeologist, after his first mission into the jungle he stayed to discover environmental impacts on ancient Maya societies, together with deforestation. Along with their archeological analysis, he and his research crew continued to make use of Landsat to monitor the tropical forests in the Petén.

The determine below illustrates where within the EM spectrum the TM sensor can ‘see’. The rectangles depict the bandwidth recorded within that region of the spectrum. The curves illustrated on the picture are examples of various land cover sorts similar to vegetation, rock, or open water. Examining the curves we see how a canopy type may have a similar response in one region of the spectrum and quite different within one other. This helps explain the explanation for the variety of colours within a picture.

There once was a time when vastly more of our world was coated with ice. Throughout the Pleistocene Ice Age, at instances an estimated 30 percent of … Read the rest