The invention relates to a manual mode aiming line trajectory fitting method of a photoelectric
system for a UAV (unmanned aerial vehicle). The method comprises the following steps of: firstly, after the photoelectric
system is switched into the manual mode, solving a
pitch angle beta of the current photoelectric
turret, and calculating a time period T1 of a single-pole stabilizing circuit; then solving
azimuth velocities V1 and V2 of an aiming line before and after the time period T1, and calculating an
azimuth angle theta at which the aiming line rotates in the time period T1; and finally, superimposing the required compensation command on the single-pole
pitch command, and realizing manual mode aiming line trajectory fitting. The method provided by the invention adopts the digital
processing technology, the information source is rich, the
algorithm can be changed, and the time
delay does not exist; and after the
algorithm is processed, the manipulation of a
sight stabilizing
turret is relatively humane, and the difficulty of operation is reduced.