Title :
A Modified Anti-Jamming Approach for Meter Band Radars
Author :
Dihua, Xu ; Jianwen, Chen ; Ya, Huang
Author_Institution :
Key Res. Lab, Wuhan Radar Acad.
Abstract :
A modified anti-jamming approach is presented for meter band uniform circular arrays (UCA) radar in the dense interference environment, which is based on least squares (LS) null constraints and the Gram-Schmidt orthogonalization (GSO) method for interference suppression, i.e., the LS-GSO approach for short. First, the LS null constraints with fast Fourier transform (FFT) approach is presented for radio frequency interference (RFI) suppression, especially the frequency modulation (FM) signals. Then, the GSO method is employed to eliminate the active interference. The simulation results indicate that the scheme is computationally efficient and robust in terms of interference suppression. A deep null can be formed to the direction of interference
Keywords :
fast Fourier transforms; interference suppression; jamming; least squares approximations; radar interference; FFT; Gram-Schmidt orthogonalization method; anti-jamming approach; dense interference; fast Fourier transform; frequency modulation signals; interference suppression; least squares null constraints; meter band uniform circular arrays radar; radio frequency interference suppression; Computational modeling; Fast Fourier transforms; Frequency modulation; Interference constraints; Interference elimination; Interference suppression; Least squares methods; RF signals; Radar; Radiofrequency interference; Beamforming; Meter band radars; Null constraints;
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
DOI :
10.1109/APS.2006.1710818
