METHOD OF CREATING HIGH-PRECISION, SECURE COORDINATE FIELD IN ORDER TO PROVIDE CONDITIONS FOR EFFICIENT EXECUTION OF TASKS BOTH IN ABSENCE AND PRESENCE OF GNSS SIGNALS Russian patent published in 2025 - IPC G01S3/80 

FIELD: navigation.

SUBSTANCE: invention relates to the field of coordinate field creation, including in the uncontrolled territories with the GNSS availability and unavailability in order to create conditions for the timely and effective execution of tasks. Generating a backup coordinate field by synchronous transmission of noise-immune navigation signals by ground and air navigation stations. To send navigation signals, the coordinates of ground observation points antennas are preliminarily determined, installed on aerial objects, in observation points and points, which coordinates need to be determined, special equipment designed for accurate determination of distances between signals sending and receiving points, interface modules with GNSS receivers, UAV control systems, ground control systems. Signals sent by ground stations contain identification data and sending time. Users select coordinates of signal sending points based on the obtained identification data and the time of sending from closed data segment tables. Coordinate field at greater depth is created by synchronous sending of navigation signals with the specified periodicity by groups of aircrafts (AC) moving along rectilinear trajectories parallel to the contact line. Straightness of the trajectories enables to calculate coordinates of next navigation signal sending points based on coordinates of preceding points through extrapolation, control accuracy of calculations and sending and, if necessary, make corrections. Coordinates of current signal sending points are calculated from solving trihedral pyramids using trilateration formulas on coordinates of ground stations and distances between signal sending and receiving points. Distance is determined from the time of movement of the signals and the speed of propagation of radio waves. Navigation signals containing identification data, calculated coordinates of departure points and the time of departure are generated and sent to ground stations for each aircraft.

EFFECT: providing fast, accurate and reliable execution of the task of orienting any combat means regardless of magnetic anomalies and the geographic latitude of the place; method has higher accuracy and does not require creation of ultra-dense networks of reference base stations, which greatly reduces the time and cost of creating the basic digital component of the infrastructure facilitating movement of unmanned vehicles.

7 cl, 14 dwg