Efficient approximation of a family of noises for application in adaptive spatial processing for signal detection

Eigensubspace method for space–time adaptive processing in the presence of non‐i.i.d. clutter and array errors

“…Referring to [19], we conclude that the eigensubspace method can be considered as the optimum processor.…”

On the use of energy concentrating beamformers and filters for detection of wideband angularly spread signals

“…In [5], Claus, Kadota and Romain were concerned with spatially filtering out angularly distributed noise/interference that was not necessarily narrowband. At a fixed analysis frequency f within the band, they modeled the noise as a Gaussian random vector n = [In ... nN]T of zero mean and covariance Q.…”

A new very high resolution interference rejection method with potential for radio astronomy applications

“…In the latter case [Monzingo and Miller, 1980], based on the sensor outputs, a realtime adaptive signal processor, customarily, automatically adjusts the array beam pattern, i.e., produces nulls, in order to maximize the signal-to-interference ratio for a given selected look angle of interest. In open-loop schemes [Claus et al, 1980;Minkoff, 1992] there is a two-step procedure, in which identification of the angular direction of the interfering sources is carried out in a step that is essentially separate and independent from that of actually implementing the interference rejection. Open loop schemes [Claus et al, 1980;Minkoff, 1992] were used extensively in SOSUS (the U.S. Navy underwater SOund SUrveillance System) [Minkoff, 2002] for canceling interference.…”

“…In open-loop schemes [Claus et al, 1980;Minkoff, 1992] there is a two-step procedure, in which identification of the angular direction of the interfering sources is carried out in a step that is essentially separate and independent from that of actually implementing the interference rejection. Open loop schemes [Claus et al, 1980;Minkoff, 1992] were used extensively in SOSUS (the U.S. Navy underwater SOund SUrveillance System) [Minkoff, 2002] for canceling interference. Schemes such as MUSIC (MUltiple SIgnal Classification) [Schmidt, 1979] are available for rapidly locating angular directions of interfering sources.…”