Implementation In DSP Of Adaptive Sidelobe Cancellation And Analysis Of The Real Data

With the development of modern military, increasingly complex electromagneticenvironment sets forth ever-increasing requirements for the anti-jamming technology ofradar. Anti-jamming capability becomes the first condition of modern radar. AdaptiveSidelobe Cancellation(ASLC) is an effective measure against active jamming. It playsan important part in the fields of radar and communication.First, in the paper, SMI algorithm and LMS algorithm are analyzed by simulation,and their cancellation performances and convergent speed are validated. Secondly, Thesimulation model for the actual requirements is built, and some mainly influencingfactors are analyzed by simulation in detail, such as interference correlation, ups anddowns of the channel amplitude and phase errors and sample selection. Then the DSPprogram is written according to the implementations scheme. After comparing the resultof computer simulation with that of realized by engineering, we can ensure that thisdesign scheme is feasible. Finally, some new real data are sampled to verify that themodule of ASLC can restrain jamming perfectly and achieve the specifications of thesystem.