METHOD AND DEVICE FOR FLICKERING MOVING POINT COORDINATE MEASUREMENT Russian patent published in 2009 - IPC G01S17/06 

FIELD: aviation.

SUBSTANCE: this invention relates to navigation, particularly to position systems without reflection or secondary radiation and can be used for target designation systems as well as inertial navigation aircraft system updating. The method consists in measuring at three points of time. The measurement is performed at the first and the second points when the flickering point is visible. The images of three conjugate points of the earth surface are registered by means of two optical-location assemblies (OLA). Coordinates of three conjugate points of the earth surface and flickering point being visible for OLA are determined and used for calculation of their coordinated in coordinate system related to the aircraft. The coordinates of flickering visible point are calculated in the coordinate system related to the earth surface at the first and the second points when the flickering point is not visible, coordinates of three conjugate points of earth surface visible for OLA are calculated and used for calculation of invisible point coordinates at the third point subject to the statement on its linear and uniform motion relative to the Earth. The device comprised two diversity OLA and digital counting system. The digital counting system comprises earth surface digital image processing facility, aircraft related coordinate calculation module, earth related coordinate calculation module and flickering point coordinate calculation module.

EFFECT: analytic definition (calculation) of coordinates of flickering moving point when its image becomes invisible for optical-location assemblies.

2 cl, 4 dwg