METHOD OF MEASURING RELATIVE FLIGHT ALTITUDE OF "AIR-SURFACE" CLASS ROCKETS Russian patent published in 2005 - IPC

FIELD: navigation.

SUBSTANCE: method can be used for designing of control system for rockets and radio altimeter for getting information on relative altitude of flight of rocket without irradiating radio signals at low and high frequencies and at irradiating of low energy at extremely low altitude flights. Before flight airplane-carrier of "air-surface" class rockets is placed into position with well known coordinates. Airplane-carrier is equipped with consumer navigation instrumentation which receives radio signals of GLONASS or GPS either both systems. Coordinates of position of aerial of consumer navigation instrumentation are calculated on the base of radio signals. Differential corrections if coordinates of airplane-carrier on the base of known real coordinates airplane-carrier. Values of differential corrections are introduced into consumer navigation instrumentation placed onto rocket before taking off. During flight of consumer navigation instrumentation rocket the plane coordinates of rocket and absolute altitude of flight of rocket are determined when taking differential corrections into account. Plane coordinates of rocket achieved during flight are introduced into digital map of region and height of region above which the rocket moves instantly is determined from plane coordinates. Relative altitude of flight is calculated and radio altimeter is switched on if relative altitude drops lower than calculated altitude of safe flight.

EFFECT: improved precision of measurement.

1 dwg