By Shen-en Qian
This e-book offers a world overview of optical satellite tv for pc photograph and information compression theories, algorithms, and approach implementations. which include 9 chapters, it describes quite a few lossless and near-lossless data-compression suggestions and 3 overseas satellite-data-compression criteria. the writer stocks his firsthand adventure and study ends up in constructing novel satellite-data-compression innovations for either onboard and on-ground use, person checks of the influence that info compression has on satellite tv for pc info functions, development compression platforms, and optimizing and deploying structures. Written with either postgraduate scholars and complex pros in brain, this instruction manual addresses very important problems with satellite tv for pc info compression and implementation, and it provides an end-to-end remedy of knowledge compression expertise.
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22, 1975 Mar. 5, 1978 July 16, 1982 Mar. 1, 1984 Oct. 5, 1993 Jan. 6, 1978 Jan. 22, 1981 Mar. 31, 1983 June 15, 2001 Operational Did not achieve orbit Operational Operational RBV RBV RBV TM TM ETMþ ALI Apr. 15, 1999 Nov. 20 16 16 10:00 10:01 did the amount and quality of image data captured by the various sensors aboard the satellites. 2 presents general information about each Landsat satellite. Landsat satellites include Landsat 1, 2, 3, 4, 5, and 7, and can be classified into three groups based on sensor and platform characteristics.
15 MERIS covers the globe in three days. Along-track sampling is close to 290 m. 55 deg. 6 min with a repeat cycle of 35 days. 5–900 nm. The spatial sampling varies in the cross-track direction between 260 m at nadir and 390 m at swath extremities. 25–30 nm) and position, but they are fixed before launch. 25 nm. However, MERIS is restricted by its downlink capability and transmits only 15 channels, where each channel is an average taken over 8–10 elements of the array. 5 tabulates the bandwidth of the 15 channels and their main applications.
The disadvantages of the push-broom mode are 1. Complex optical design and complex focal plane; 2. A narrow FOV, which is constrained by the available number of pixels of 2D detector array in the spatial direction; 3. Complex calibration; and 4. Spectral distortion (also referred to as smile) and spatial distortion (also referred to as keystone). The smile and keystone distortion of a push-broom sensor are discussed in Chapter 8. 5 Spaceborne hyperspectral sensors Five hyperspectral sensors have been deployed aboard satellites in low Earth orbit (LEO).