The invention relates to a multi-sensor combined
navigation system for
aviation, and the
system comprises an MSINS unit, a GPS unit, a magnetic
compass unit, a
liquid crystal display unit, a
data transmission interface unit, a combined navigation computer, a data storage unit and a power supply device. The MSINS unit is used for acquiring signals of an
accelerometer and a
gyroscope, carrying out
filtration and amplification and sending the signals to a DSP for carrying out
algorithm processing; a GPS module is used for outputting
longitude,
latitude, altitude and velocity values of X, Y and Z axes based on a geocentric coordinate
system measured by the GPS; the magnetic
compass unit is used for outputting three-dimensional attitude information measured by a three-axis magnetic
compass; the combined navigation computer is used for receiving signals outputted by an
inertial measurement unit, the GPS module and the magnetic compass, applying the federated
Kalman filtering algorithm to carry out fusion treatment on data and obtaining combined navigation data; and the data storage unit is used for saving
original data and result data. The
system has the advantages of small volume, low cost, high reliability and high precision.