Semi-strapdown air-to-air missile guidance method based on sliding mode variable structural theory
A sliding mode variable structure, air-to-air missile technology, applied in the field of guidance and weapon technology, can solve the problem that the guidance law cannot meet the guidance requirements, and achieve the effect of guaranteeing the guidance accuracy of the missile
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[0019] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.
[0020] The present invention is a semi-strapdown air-to-air missile guidance method based on the sliding mode variable structure theory, the process is as follows figure 1 shown, including the following steps:
[0021] Step 1: Obtain the differential model of bullet eye sight turn rate in the line of sight coordinate system;
[0022] In three-dimensional space, the relative motion relationship between the missile and the target is established as figure 2 shown, where: ox G the y G z G is the inertial space coordinate system, ox S the y S z S is the line-of-sight coordinate system of the projectile, the interceptor missile coincides with the origin of the coordinate system, the subscripts M and T represent the missile and the target respectively, and ox S It is LOS (line-of-sight).
[0023] In the line of sight coordinate system, according to...
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