COMPLEX METHOD OF AIRCRAFT NAVIGATION Russian patent published in 2015 - IPC G01C21/00 G01S5/00 

FIELD: aircraft engineering.

SUBSTANCE: generated is extra data base including antenna patterns of satellite receiver antenna and onboard antenna of long-range signal transceiver. navigation satellite signals received and navigation parameters defined by satellite navigation procedure (SNP), working constellation composition and angular coordinates of navigation satellites are isolated. Satellite receiver SNR is isolated to generate SNP error correlation matrix. Navigation satellite (NS) direction vectors are shaped to define NS weight factors in working constellation by aircraft orientation, refined aircraft position, NS angular coordinates and satellite receiver antenna pattern. Composition of satellite constellation is corrected by NS weight factors to correct navigation parameters by corrected composition of NS working constellation. Then, oriented correlation SNP error matrix is shaped with due allowance for aircraft orientation on the basis of corrected composition of said constellation and NS weight factors. Simultaneously, long-range navigation process (LRN) is used to shape correlation matrix of LRN error matrix. Direction vectors and shaped to define ground radio beacon (GRB) weight factors by aircraft orientation, refined aircraft position, GRB coordinates and said transceiver onboard antenna pattern. GRB working composition is corrected by their weight factors. LGN error correlation matrix is generated with allowance for aircraft orientation. Corrected working composition of HRM and their weight factors allowed for are used to generate oriented parameters for LGN and SNP to be used in onboard computer for generation of complex navigation parameters. Note here that output results are presented as a refined position of aircraft corrected with allowance for aircraft orientation. Invention discloses the process version exploiting for definition of data on aircraft orientation of orientation operator computed in inertial navigation process. Besides, it discloses the process version that defines the LGS transceiver one onboard antenna pattern selection. Besides, in compliance with another version, aircraft multi-beam pattern is taken to depend on aircraft orientation to correct its position depending on the level of multipathing.

EFFECT: higher reliability and precision, lower risks of disasters.

4 cl, 5 dwg, 3 app