This paper introduces a new Spaceborne Polarimetric SAR Data Simulation system
The siumlation method used in this paper is based on the view of real system; and according to the sequence of the transmit pulses
each return wave formed by the reflection of all the targets which are irradiated by the transmit beam is calculated one bye one
all these return wave data form the result. Compared with the usually used method based on single point target simulation
this method is much more efficient especially in case of simulating a large area. It is also conveniently to simulate all kinds of error and keep the correlation and consistency of the errors. At last