A new method which can calculate the whole swath Doppler parameters of space-borne SAR(synthetic aperture radar) was presented.The method,based on space coordinate transformation,made the satellite position and velocity as references.Using the space geometric model and the coordinate transformation,a quartic equation between the slant range and the look angle was founded.After solving the equation,the look angle value was got,and the Doppler parameters were then calculated.The simulation results show that t...