Bias estimation of magnetometer using genetic algorithm

A number of algorithms have been proposed for estimating the magnetometer bias without the spacecraft attitude knowledge. The simplest is the scalar checking which minimizes the differences in the squares of the magnitudes of the measured and modeled magnetic fields. This approach is that the cost function is presented as forth order equation with respect to the magnetometer bias and therefore is required to find global minimum. Magnetometer bias estimation using the genetic algorithm was proposed. New estimation method was the same structure like TWOSTEP. The genetic algorithm provides the initial estimate to find the final solution. The proposed bias estimation using genetic algorithm was compared with other optimization algorithm like the gradient method and TWOSTEP.