METHOD OF MEASURING SPATIAL-FREQUENCY DISTRIBUTION OF DIRECTION FINDING SYSTEMATIC ERROR Russian patent published in 2012 - IPC G01S3/10 

FIELD: physics.

SUBSTANCE: in the method of measuring spatial-frequency distribution of direction finding systematic error, involving irradiating a radio-direction finding system from different directions with test signals at different frequencies which are given with equal spacing, determining bearings in the given directions and calculating direction finding systematic errors, the radio-direction finding system is irradiated simultaneously with A-test signals of the type S_α(ω_i,(t-T_j)) from corresponding directions α=1, 2…A, with duration T_j, frequency ω_i, which, with the next measurement cycle j=1, 2…J, discretely change their value uniquely on all directions until complete realisation of the set of frequencies allocated for measurement ω_i∈{ω₁; ω₂…ω_J}, over a period of time T_Σ=J·T_j, bearings in the given directions are determined and the direction finding systematic error is calculated, where t is the current time.

EFFECT: faster measurement of spatial-frequency distribution of direction finding systematic error while preserving accuracy characteristics of measurement.

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