TELEMETERING MEASUREMENTS FROM SPACE VEHICLE TIME REFERENCE DETERMINATION METHOD Russian patent published in 2018 - IPC B64G3/00 

FIELD: aviation.

SUBSTANCE: method includes the time marks generation on board of the space vehicle (SV) and the marks along with the telemetering data transfer to the ground receiving point. Upon that, one measures the SV orbit parameters and determines the intensity () of terrestrial magnetism (IOTM) from the orbit parameters. The IOTM present intensity ( ) is measured on board of the SV. By the fixed time point t₀ one alleviates the SV rotation in reference to the center of mass (for the reduction in vortex currents). One determines the time reference error (Δt₀) of the telemetering measurements at the moment t₀, the time error accumulation ratio (k) and the error ( ) in the IOTM measurement by reason of the influence of the SV self-magnetic field from the minimum condition of the sum of squares of the differences between the modules and (dependent upon Δt₀, k and ) by the consecutive samplings instants.

EFFECT: providing the precise telemetering measurements from the space vehicle time reference upon the existence of the time-dependent errors in the on-board time marks generation.

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