Adaptive radar in remote sensing using space, frequency and polarization processing

A challenging task arising in connection with the employment of radar involves the matching of new technological achievements to important applications in the field of remote detection and identification. It is pointed out that most of the existing detection/identification systems do not make optimum use of all the a priori information on the object of interest. By taking into account the geometrical shape of the object of interest, it is possible to design an optimum illumination and detection system which adapts itself to this target against a terrestrial background through an adverse propagation medium. The present investigation is mainly concerned with the multifrequency radar system. The illumination in the time domain is structured for optimum coupling to the target. Attention is given to the shaping of the phasefront in space, and the manipulation of the polarization properties of the transmit/receive system.