To study the probability of target acquirement of infrared imaging seeker under three typical types
of search law of parallel search law, cone search law and one-dimension visual effect search law, the
model of target doing random weaving maneuver is built and experiment based on Monte Carlo
simulation is designed to try to simulate much possible situation of missile searching target. In the
experiment such factors are considered as initial distance between missile and target, measure error of
target's velocity and time interval of missile getting target information. Simulation results show that the
probability of target acquirement under cone search law are the most, probability under one-dimension
visual effect search law is the least and probability under parallel search law are between them, which
is very helpful for choice of search law and overall design of missile.
KEYWORDS: Missiles, Gyroscopes, Infrared imaging, Systems modeling, Thermal modeling, Control systems design, Automatic target recognition, Optical tracking, Electromagnetism, Optical systems
To study the effect on infrared imaging seeker's target tracking of missile attitude changes, the
model of a seeker in which optics system is installed in gyro rotor is built. In the model such factors as
dynamic characteristics of gyroscope, noise caused by gyroscope rotation, coupling of pitching and
yawing of seeker and so on are taken into accounted. Simple missile model and target model were built
too. Based on the models simulation was made and simulation results show that rolling has more
obvious effect on seeker's tracking target than pitching and yawing and the larger magnitude and
frequency of missile's rolling movement are the more seriously seeker's output is affected, which is
helpful for design of missile's control system, choice of guidance law and overall design of weapon
system.
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