Highly sensitive method for direction finding, involves performing cross-correlation of Fourier transformed digital signals, for determining whether input is low level signal or noise

摘要

The method involves receiving input signals through a single antenna module and dividing the input signals so that input signals are converted into two digital signals. Fourier transforming of each of the digital signals is performed. Cross-correlation of Fourier transformed digital signals is performed, for determining whether the input is a low level signal or noise. An independent claim is included for a highly sensitive device for direction finding.