More Image formation

Instantaneous field of view and ground resolution GRE = IFOV x H where IFOV is measured in radians H IFOV GRE

Total field of view Image width = 2 x tan(TFOV/2) x H where TFOV is measured in degrees H

Image scan lines

Image pixel array

Imaging array concept H

Recording of values Energy measurements are converted into 8 or 10 bit for storage and transmission. This has the disadvantage of only recording certain discrete values and introduces ‘quantisation’ errors.

Converting data We know all about the sensor from pre-flight calibration So instead of actually finding the energy and then converting we do a straight conversion from the byte value to albedo This will be something like

Radiometric resolution Bit