A Combined Programmed and Adaptive Null Steering Technique

The described method of antenna null steering makes use of calibrated and stored weight distributions for each solid angle increment of a radar search volume. Based upon direction measurement to an interference source, the appropriate weight distributions are calculated for each relative antenna position. In addition to the programmed part an adaptive inner loop is included for fine null adjustment. The major parameters and characteristics of the null steering technique are studied and evaluated through computer simulation programs.