METHOD OF INITIAL ALIGNMENT OF INERTIAL NAVIGATIONAL SYSTEM

METHOD OF INITIAL ALIGNMENT OF INERTIAL NAVIGATIONAL SYSTEM

FIELD: initial alignment of inertial navigational systems. SUBSTANCE: gyro- stabilized platform of inertial navigational system is immovably stabilized relative to inertial coordinate system. Signal from accelerometers are measured at initial period of time and measurement is repeated after small in...

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Bibliographische Detailangaben
Hauptverfasser: ERMAKOV V.S, MAKSIMOV A.G, SEVEROV L.A, ANDREEV A.G, JAKUSHIN S.M
Format: Patent
Sprache:eng
Schlagworte:
GYROSCOPIC INSTRUMENTS
MEASURING
MEASURING DISTANCES, LEVELS OR BEARINGS
NAVIGATION
PHOTOGRAMMETRY OR VIDEOGRAMMETRY
PHYSICS
SURVEYING
TESTING
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Beschreibung
Zusammenfassung:FIELD: initial alignment of inertial navigational systems. SUBSTANCE: gyro- stabilized platform of inertial navigational system is immovably stabilized relative to inertial coordinate system. Signal from accelerometers are measured at initial period of time and measurement is repeated after small interval. Elements of matrix of direction cosines are calculated between inertial and normal coordinate systems. On base of elements of matrix of direction cosines thus calculated orientation of inertial coordinate system connected with gyrostabilized platform is determined relative to normal coordinate system. EFFECT: enhanced accuracy; reduced duration of alignment procedure.