Abstract:

A graphical electromagnetic computing method for the mechanical scanning antenna is presented for detection and recognition to the guiding radar of air defense missile weapon system (ADMWS) using an active radar seeker.Firstly the electromagnetic scattering characteristic of the antenna is calculated using the graphical electromagnetic computation (GRECO) method, and then the high range resolution profile (HRRP) of the antenna is synthesized based on the wide-band calculation data. Finally the characteristics of range profiles of the antenna are analyzed. The results show that there are periodic changes such as intensity, width and distance in a series of HRRPs due to the rotation of the antenna, and it provides the possibility to estimate the size and rotation period of the antenna as well as to identify the mechanical scanning antenna using a series of HRRPs.