The invention discloses a ship inclination measurement method and
system based on Kalman filtering fusion, and relates to the technical field of
ship stability measurement, and the method comprises the steps: multi-sensor synchronous data collection,
state space modeling and Kalman filtering fusion, adaptive dynamic adjustment of
process noise, drift compensation, and
fault tolerance and output. When the method and the
system provided by the invention are used for measuring inclination, inclination angle error accumulation caused by
gyroscope zero offset integral error,
accelerometer dynamic interference, sensor
noise and temperature drift, GNSS dependency and the like can be effectively avoided, available precision can still be maintained through multi-sensor depth
coupling and an intelligent filtering
algorithm, and the accuracy of inclination measurement is improved. The method is simple in operation, independent of
satellite data, higher in stability, capable of greatly reducing hardware cost compared with GNSS and IMU schemes, and especially has the advantages of being simple in cost and installation configuration in ship refitting; and the method is also suitable for GNSS rejection or
cost sensitive scenes such as inland ships, unmanned ships, offshore buoys and the like.