A method relating to filtering coherent noise and interference from seismic data by constrained adaptive beamforming is described using a constraint design methodology which allows the imposition of an arbitrary predesigned quiescent response on the beamformer. The method also makes sure that the beamformer...http://www.google.com.au/patents/US6446008?utm_source=gb-gplus-sharePatent US6446008 - Adaptive seismic noise and interference attenuation method