DIGITAL SIMULATOR OF SIGNALS OF N-ELEMENT GNSS ANTENNA ARRAY Russian patent published in 2023 - IPC H04K3/00 G01S19/21 G01S19/23 G01S7/40 

FIELD: radio navigation.

SUBSTANCE: in the digital signal simulator of the N-element GNSS antenna array, the digital signal conditioning unit is supplemented with (N-1) noise generators, a block of signal-like imitation noise generators, a control unit for the GNSS antenna array signal simulator and a digital summation unit for GNSS signals and interference. The GNSS signal simulator, which contains M GNSS signal generators, the number of which corresponds to the number of satellite signals in the simulated cluster of the navigation system, and the signal summation unit, contains a pseudo-noise signal generator and a bit depth converter. A multichannel amplitude-phase digital signal multiplier is introduced into each GNSS signal generator, which generates output signals that simulate reception of a GNSS signal from a certain direction with respect to N elements of the simulated antenna array. Each noise generator consists of a noise synthesis unit, a multichannel amplitude-phase digital signal multiplier, and a noise generator control unit. The block of generators of signal-like imitation interference consists of P generators of signal-like imitation interference, a multi-channel signal adder and a control unit for generators of signal-like imitation interference.

EFFECT: implementation of testing and optimization of operability and noise immunity of satellite navigation equipment at the laboratory by recreating reception of navigation signals and interference with several antennas from different directions.

1 cl, 10 dwg