The transient sidelobe level of a sidelobe canceler (SLC) is a function of the external noise environment, the number of adaptive auxiliary antennas, the adaptive algorithm used, auxiliary antenna gain margins, and the number of samples used to calculate the adaptive weights. An analytical result for the adaptive sidelobe level is formulated for the case when the adaptive algorithm is the open-loop, sampled matrix inversion (SMI) algorithm. The result is independent of whether concurrent or nonconcurrent data processing is used in the SMI algorithm's implementation. It is shown that the transient sidelobe level is eigenvalue dependent and increases proportionally to the gain margin of the auxiliary antenna elements with respect to the quiescent main antenna sidelobe level. Techniques that reduce this transient sidelobe level are discussed, and it is theoretically shown that injection independent noise into the auxiliary channels significantly reduces the transient sidelobe level. It is demonstrated that using this same technique reduces the SMI noise power residue settling time.<>
Adaptive array transient sidelobe levels and remedies
IEEE Transactions on Aerospace and Electronic Systems ; 26 , 3 ; 560-568
01.05.1990
710030 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Effective Sidelobe Levels Due to Scatterers
IEEE | 1979
|Adaptive nulling of SAR sidelobe discretes
IEEE | 1999
|Adaptive arrays and sidelobe cancellers; a perspective
Tema Archiv | 1977
|PAPERS - Adaptive Nulling of SAR Sidelobe Discretes
Online Contents | 1999
|