METHOD OF INERTIAL-SATELLITE NAVIGATION OF AIRCRAFTS Russian patent published in 2014 - IPC G01C21/00 G01C23/00 

FIELD: radio, communication.

SUBSTANCE: invention relates to the field of aircraft (AC) navigation with use of integrated method of navigation, functionally combining the inertial navigation method and the satellite navigation method, and can be used in implementation of the AC navigation, including highly dynamic AC navigation in difficult navigation conditions, characterized by increased level of variability of structure of working constellation of navigation satellites. The method consists in the fact that between the input and output processing of data of inertial sensor and the satellite receiver with use for the integrated processing the Kalman filter the intermediate processing is carried out, taking into account the AC orientation in space. It comprises: the formation of data of the working constellation on the basis of the clarified position of the AC and the information about the AC orientation, the almanac of satellites, the antenna directional pattern of the satellite receiver, as well as the formation of the correlation matrix of the measurement errors of the satellite receiver based on the data of working constellation of the satellites. The embodiment of the method is proposed, in which in the intermediate processing the choice of working constellation of satellites is carried out, the formation of vectors of direction to the satellites, the satellite weighting coefficients are determined, comparing the directions to the satellites and the antenna directional pattern of the satellite receiver, and the correlation matrix of the errors of satellite mode is generated taking into account the weight coefficients and relationships of signal/noise ratio for satellites of the working constellation. The embodiment of the method is proposed with a target controlled search of working constellation of the satellites.

EFFECT: estimation of coordinates of AC with greater accuracy and continuity.

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