Abstract:

The present bistatic forward scattering barrier radar can only detect the low altitude stealthy target, and its shadow image is not directly equal to the silhouette of targets. In view of these problems, this paper puts forward a SISAR based on space transmitter and analyzes its advantages in detection and shadow imaging. Then a new SISAR coordinate system is redefined and a new expression of radio holographic signals (RHS) is deducted based on the shadow imaging theory in ground bistatic barrier radar. The conclusion is drawn that the radio holographic signal is the Fourier transform of the scaled outline of targets according to shadow imaging theory. Simulation experiments prove the correctness of this conclusion.