METHOD FOR NOISE SUPPRESSION DURING RECEPTION OF CIRCULAR-POLARIZATION ELECTROMAGNETIC WAVE BY BIORTHOGONAL ANTENNA ASSEMBLY Russian patent published in 2006 - IPC H01Q3/26 H01Q21/00 

FIELD: antenna engineering; radio communication systems.

SUBSTANCE: proposed method intended to eliminate mutual impact among dipoles and to suppress noise including that similar to useful signal spectrum within wide spectrum of angles includes reception of circular-polarization electromagnetic wave by means of two orthogonal antenna assemblies relatively turned through angle of π/4, conversion of signals received, generation of four reference signals, equalization of nine reference-signal readings with respect to time, detection of four combinations of hypothetical noise-signal implementations, estimation of each of four hypotheses for reliability and selection of most reliable of them, generation of four compensating signals corresponding to chosen hypothesis, correction of noise signals, phase equalization of corrected signals in each pair and between pairs, addition of signals in each pair and between pairs to produce output signal of biorthogonal antenna assembly; in the process four signals compensating for mutual impact of biorthogonal assembly antennas are produced by weighed addition of converted signals, whereupon four signals compensating for mutual impact of biorthogonal assembly antennas are used to generate four reference signals.

EFFECT: enhanced signal-to-noise ratio in reception.

1 cl, 4 dwg