| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve the problem of deteriorating the tracking accuracy when the behavior of a tracking target is largely different from the kinetic model. SOLUTION: This seeker provided with an airplane tracking filter means 1 inputting an observation value vector of the tracking target and tracking based on a uniform linear motion model or a uniformly accelerated motion model, a spacecraft tracking filter means 2 tracking based on a kinetic model following the universal gravitation, a tracking output selection means 3 selecting either of outputs based on the eccentricity and the semimajor axis of the tracking target, a gate calculation means 4 outputting a tracking gate region obtaining the observation value vector of the tracking target based on the either of the outputs of the airplane or the spacecraft tracking filter means, and a gate inside outside judgment means 5 extracting the observation value vector in the tracking gate region out of the observation value vectors of the polar coordinates from a radar and converting the coordinates into north based rectangular coordinates. This constitution can select the tracking output according to the types of the tracking targets so as to improve the tracking accuracy.</p> |
