This paper conducted research on the super close-in PD radar’s complex target echo synthesis technology

and put forth a method of "Video synthesis combining space synthesis".The method divided the work space of radar and complex target into multi-small airspace based on equal space angle during the process of simulation.In accordance with the principle of scatter-points distribution

and made dynamic distribution of target scatter-points to the airspace on the basis of known cross posture.During simulation

target scatter-points’ echo of the same airspace will carry out video synthesis

then are sent into radar by I/Q modulation and up-conversion.In the mean time

all airspaces’ echo will undergo space synthesis again through array antenna

echo signal will finally be generated to radar receiver antenna.