A radar signal contains amplitude and phase information. is the strength of the radar response and is the fraction of one complete sine wave cycle (a single SAR wavelength). The phase of the SAR image is determined primarily by the distance between the satellite antenna and the ground targets.A satellite SAR can observe the same area from slightly different look angles. This can be done either simultaneously (with two radars mounted on the same platform) or at different times by exploiting repeated of the same satellite. The distance between the two satellites (or orbits) is called .

If a SAR image pixel has a value b+ai, its phase ɸ is given by _______ sin-1(a/b) sin-1(b/a) tan-1(b/a) tan-1(a/b)

What is the unique information content in SAR data?1 pointSpectral properties of the land surfaceCO2 concentration in the atmosphereStructure and moisture of the land surfaceAcoustic properties of the land surface

Best possible resolution that can be achieved by SAR is when length of antenna = X * Azimuth Resolution. What is the value of X? 1/2 1/4 2.0 4.0

RADAR measures speed by which principle?Group of answer choicesSynthetic apertureDoppler effectRadar Cross Section (RCS)Range and bearing

The describes the spatial dimension in which a wave repeats itself.Remote Sensing makes use of atmospheric , frequency bands in which the atmopshere of the Earth is transparent to electromagnetic radiation.The frequency is measured in the unit of .