METHOD AND DEVICE OF SPATIO-TEMPORAL INTERFERENCE REJECTION IN CONSUMER EQUIPMENT OF GLOBAL NAVIGATION SATELLITE SYSTEMS Russian patent published in 2023 - IPC G01S19/21 G01S7/36 H04K3/00 

FIELD: radio engineering; radio navigation.

SUBSTANCE: formation of a maximum or a beam of the directional pattern (DP) or focusing in the direction of arrival of the useful signal from the navigation spacecraft (NSC) with information available on the orientation of the antenna array (AA) with the focusing and the interference compensation procedures segregated. In the method of spatio-temporal interference rejection in the equipment of consumers of global navigation satellite systems under interference conditions, before spatio-temporal compensation of interference using the least squares method, the operations of calculating and averaging of the correlation matrix (of dimension M×M) of an additive mixture of useful signals, interference and intrinsic noise of radio frequency receiving paths are performed, it is decomposed into a system of eigenvectors, the amount of effective interference J is estimated, N vectors of weighting coefficients are calculated to form N rays of the antenna array radiation pattern as a projection of focusing vectors calculated on the basis data on the angular positions of navigation spacecraft obtained from ephemerides, and the orientation of the antenna array, into the noise subspace formed by the eigenvectors of the correlation matrix corresponding to its MJ smallest eigenvalues, the dimension of which is determined by the amount of active interference, and the signal samples are multiplied by the calculated N beam-forming vectors, feeding the multiplication result to the reference channels of the independent interference compensation units, and the eigenvectors corresponding to the M-1 largest eigenvalues of the correlation matrix, feeding the multiplication result to the compensation channels of the interference compensation units. A vector-matrix multiplication unit is introduced into the device for spatio-temporal interference rejection in the equipment of consumers of global navigation satellite systems in front of the spatio-temporal signal processing unit.

EFFECT: improved efficiency of interference suppression.

2 cl, 6 dwg