Strapdown compass alignment method and system based on time-varying parameters

The invention relates to a strapdown compass alignment method and system based on time-varying parameters, and relates to the technical field of navigation systems.The method comprises the steps that an initial system model is determined according to navigation information of a main inertial navigat...

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Bibliographic Details
Main Authors ZHANG YUNHAO, LI CIBING, DONG SHIMIAO, WU LEI, LAN HE, ZHANG YINGJUN, ZHOU GUANGTAO
Format Patent
LanguageChinese
English
Published 14.11.2023
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
GYROSCOPIC INSTRUMENTS
MEASURING
MEASURING DISTANCES, LEVELS OR BEARINGS
NAVIGATION
PHOTOGRAMMETRY OR VIDEOGRAMMETRY
PHYSICS
SURVEYING
TESTING
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Summary:The invention relates to a strapdown compass alignment method and system based on time-varying parameters, and relates to the technical field of navigation systems.The method comprises the steps that an initial system model is determined according to navigation information of a main inertial navigation system; the initial system model is a system model of a sub inertial navigation system to be aligned; based on the Euler platform error angle, determining a frequency domain system equation according to the initial system model; the frequency domain system equation is a frequency domain equation of a sub inertial navigation system to be aligned under a static base condition; performing state solving on the frequency domain system equation, and determining system alignment control parameters; determining a time-varying function of the system alignment control parameters according to the system alignment control parameters; and carrying out compass alignment on the to-be-aligned sub inertial navigation systems at
Bibliography:Application Number: CN202210484736