Title :
Predicted properties of bistatic satellite images
Author_Institution :
Nichols Res. Corp., Wakefield, MA, USA
fDate :
6/15/1905 12:00:00 AM
Abstract :
Properties of range-Doppler images obtained from wideband pulsed bistatic radars are determined, taking into account relative translational motion of the transmitter, target and receiver, as well as the rotational motion of the target. If the bistatic angle is nonzero and changing, the gradients of range and range rate are not perpendicular to each other as they are with monostatic radar. The mapping from relative range, range-rate to target Cartesian coordinates, requires a skew coordinate transformation which distorts the point spread function (PSF) in shear. The consequences of this mapping for image resolution, for the limits on linear imaging and for image ambiguities and sidelobes are shown. These predicted image properties are verified by comparison with an image calculated from simulated data.
Keywords :
aerospace instrumentation; image processing; radar theory; remote sensing by radar; satellite relay systems; Cartesian coordinates; PSF; bistatic angle; bistatic satellite images; image ambiguities; image resolution; linear imaging; microwave radar; point spread function; predicted image properties; range Doppler images; receiver; rotational motion; shear; sidelobes; simulated data; skew coordinate transformation; target; translational motion; transmitter; wideband pulsed bistatic radars; Bistatic radar; Image resolution; Pulse measurements; Radar cross section; Radar imaging; Radar scattering; Satellites; Spaceborne radar; Transmitters; Two dimensional displays;
Conference_Titel :
Radar Conference, 1993., Record of the 1993 IEEE National
Conference_Location :
Lynnfield, MA, USA
Print_ISBN :
0-7803-0934-0
DOI :
10.1109/NRC.1993.270449
