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As a result of the radar system got interferenced or in the state of half silent ,it can cause the guided
precision drop badly In the modern electronic warfare, therefore it can lead to the equipment depended on
electronic guidance cannot strike the incoming goals exactly. It will need to rely on optoelectronic devices to make
up for its shortcomings, but when interference is in the process of radar leading ,especially the electro-optical
equipment is influenced by the roll, pitch and yaw rotation ,it can affect the target appear outside of the field of
optoelectronic devices for a long time, so the infrared optoelectronic equipment can not exert the superiority, and
also it cannot get across weapon-control system "reverse bring" missile against incoming goals. So the
conventional ship-borne infrared system unable to track the target of incoming quickly , the ability of
optoelectronic rivalry declines heavily.Here we provide a brand new controlling algorithm for the semi-automatic
searching and infrared tracking based on inertial navigation platform. Now it is applying well in our XX infrared
optoelectronic searching and tracking system. The algorithm is mainly divided into two steps: The artificial mode
turns into auto-searching when the deviation of guide exceeds the current scene under the course of leading for
radar.When the threshold value of the image picked-up is satisfied by the contrast of the target in the searching
scene, the speed computed by using the CA model Least Square Method feeds back to the speed loop. And then
combine the infrared information to accomplish the closed-loop control of the infrared optoelectronic system
tracking. The algorithm is verified via experiment. Target capturing distance is 22.3 kilometers on the great lead
deviation by using the algorithm. But without using the algorithm the capturing distance declines 12 kilometers.
The algorithm advances the ability of infrared optoelectronic rivalry and declines the target capturing time by
using semi-automatic searching and reliable capturing-tracking, when the lead deviation of the radar is great.
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