Abstract: For the omnidirectional precise detection problem of short-range incoming target, a method of laser-magnetism combination azimuth measurement is proposed based on laser short-range detection theory and magnetism proximity sensation theory. The short-range detection pulse laser signal model and rotational scanning equivalent magnetic charge mathematical model are established. The Monte Carlo method is used to study the statistical distribution of azimuth measurements in the simulation experiment. The influences of sensor-to-magnetic core spacing, rotation scan detection period and signal detection threshold on the statistical distribution of azimuth measurements are analyzed. The results show that the probability density distribution of azimuth measurement shifts to the left with the increase in the distance between the sensor and the magnetic core, the full width half maximum increases, and the mean value deviates from the true value; the peak value of angular distribution increases with the increase in the rotating scanning speed; as the threshold increases, the angular distribution becomes concentrated, thus reaching the maximum and then tending to disperse, and the front and back angular distribution curves show different rising and falling edges.Key

Key words: laserproximityfuse, laser-magnetismcombination, short-rangedetection, dynamicazimuthmeasurement, probabilitydensitydistribution