EngineeringElectrical EngineeringAntennasBiomedical Signal ProcessingComputational ElectromagneticsArray ProcessingBeamformingDigital Signal ProcessingRadio Frequency Interference MitigationReceiver SystemsSignal ProcessingAdaptive AlgorithmsAdaptive FilteringAdaptive Null SteeringAdaptive NullingInterferenceInterference CancellationInterference RejectionReverberation
Algorithms for adaptively steering the null of a cardioid to achieve interference rejection are developed. The algorithms are basically broadband, but by frequency filtering it is easy to steer independently in different frequency bands. Of particular interest is the nulling of highly directional reverberation when sonobuoys are considered as multistatic active receivers. Simple adaptive algorithms are shown to be effective in simulations.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>