FIELD: physics.
SUBSTANCE: method involves recording ring waves on the image, simultaneously with which a part of the land is recorded, selecting and identifying, at least, four characteristic objects on it, not lying on one straight line. Then orthorectification of a snapshot is performed (image transformation from the central to the orthogonal projection). At least, three points are fixed on the resulting snapshot (orthophoto) lying on the ring wave image, and the coordinates of these points are determined from this snapshot. The ring wave source coordinates are determined by the finite formulas obtained using the geometric properties of the orthophotomap.
EFFECT: increasing the efficiency, reliability and accuracy of determining the ring wave source coordinates on the water surface with an unknown orientation of the survey system in advance.
3 dwg
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