Abstract
A null constrained beamformer is a minimum variance beamformer in which each weight is either forced to remain zero or allowed to participate in the adaptive interference nulling process. Based on source delay modeling, a null constraint set is determined by sensor position tolerance, look-direction tolerance and signal correlation characteristics. These constraints make the desired primary input signal statistically orthogonal to the reference input. This beamformer addresses the problem of reducing broadband and narrowband sidelobe interference without rejecting the mainlobe broadband signal. Wiener solution analysis guarantees superior output signal to interference plus noise ratio as compared to a conventional beamformer. Preservation of a broadband signal is proven to be insensitive to sensor-element gain. A spatial separation of discrete white noise sources is analyzed, using the inversion lemma. This easily implemented processor is well suited to wideband low power signals.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
