Q/15 which two of the following are correct statements with respect to sensor design? a) for high spatial resolution the sensor has to have a smale ifov b) a small ifov increases the amount of energy that can be detected within the iifov ) narrowing the wavelength range detected for a particular channel or band increases the amount t nergy detected without reducing spatial resolution but this reduces the spectral resolution of the sernsor d) coarser apatial resolution reduces radiometric and/or spectral resolution /16 if the spectral range of the 288 channels of an airborne multispectral scanner is exactly 0.40 m to 0.90 m and each band covers a wavelength of18 nm, can there be overlap between the bands? a) yes b) no /17 how many megabytes of computer disk space would be required to store an b-bit landsat thematic mapper (7 bands, 6000 x 6000 pixels)? a) 60 megabytes b) 120 megabytes c) 240 megabytes d) 512 megabytes q/18 which of the following is incorrect concerning current landsat instruments? a) the smallest area on the ground measured is 60m square b) designed to detect visible and infrared wavelengths c) primarily measure light that's reflected from earth's surface d) need an understanding of spectral signatures to interpret landsat data. q19/ what three of the following would be the advantage/benefit of geometrically correcting an image to geographic coordinates prior to further analysis and interpretation? a) allows proper measurements of distances and areas to be made from features in the image. b) removes facilitation of data integration c) particularly useful in different applications where true measurements are necessary once image is geometrically registered to a known geographic base, it can be combined with other mapped data in a digital environment for further analysis q20/if the ifov for all pixels of a scanner stays constant, which of the following statements is correct? a) the ground area represented by pixels at the nadir will be at a smaller scale than those pixels which are off nadir b) the spectral resolution will vary from the image center to the swath edge c) the spatial resolution will vary from the image center to the swath edge d) the ground area represented by pixels off nadir will be at a larger scale than those pixels which are a nadir -end