Abstract:

A technology method of model compensation is brought forward to compensate aircraft magnetic interference in  precise aeromagnetic detection. An aircraft magnetic interference model of 21 parameters is presented, and its multi-collinear problem is calculated and analyzed. The model parameter estimation is studied based on the ridge estimation method. The learning data are pretreated with timefrequent scale filters, and then a new algorithm of choosing the ridge paramete is brought forward based on extremum estimation to ameliorate calculation precision and stability. The  simulation and flying trial show that the parameter estimation algorithm is of high precsion and stability, and the  aircraft magnetic interfernce can be compensated precisely.