FIELD: physics; radio.
SUBSTANCE: invention relates to radio engineering and can be used for increasing service continuity to users of wide-area differential subsystems (WADS) of satellite radio navigation systems (SRNS) GPS (Global Positioning System) and GLONASS (Global Navigation Satellite System) in conditions of sudden unfavourable factors, such as geomagnetic disturbance, powerful short-period radio noise and local multipath effect noise. In the proposed method warning on possible violation of integrity of wide-area differential subsystems is generated based on analysis of the current regional distribution of real values of the geometrical factor.
EFFECT: increased reliability of warning on violation of integrity of a system, since there is analysis of the real image of the current geometry of the navigation constellation, reflecting the effect of sudden unfavourable factors, as well as provision for service continuity to users of satellite radio navigation systems through timely and reliable warning on violation of wide-area differential subsystems.
