Research On Control Method And Firing Effectiveness Analysis Of Smart Submunition

It is an important trend to evolve various cargo warheads and smart submunitions for improving the combat capability of long-range weapon platforms. In order to enhance the cost-efficient and improve the accuracy of attack, and adapt to the requirement of point target and line target, the theory and its applications of smart submunition are researched in this dissertation. The work conception adopted by the submunition is"strap-down image seeker and simply control unit". In the concept of the smart submunition, two specific researches are carried out: the contorl method and the firing effectiveness analysis of terminal multi-correction submunition (TMCS) for point target and terminal propelment and correction submunition (TPCS) for runway. The dissertation focuses on the following subjects:(1) The work principle of smart submunition is introduced. According with the actual work conditions of the ballistic missile warhead and the standoff airborne dispenser, the structure and work process of the TMCS and TPCS are established.(2) In the approximate conditions, the stability and maneuverability are studied using dynamics characteristics analysis method. From the perspective of maintaining stability of motion, the reference range of rotation rate is proposed. The dynamic response of pulse is analyzed by numerical methodology.(3) The problem of terminal guidance law and its implementation of TMCS are studied. Considering the relative acceleration, the time-to-go estimate method is derived, which makes estimation result closer to the actual value. A terminal guidance method is present which utilizes the information measurement from the seeker directly. Line-of-sight (LOS) estimate model is deduced from kinematic equation of strap-down seeker, the preliminary exploration of the application of using adaptive filter on pulsed proportional navigation (PPN) is made. In some given condition, the disturbance of measurement noise can be eliminated.(4) The control method of TPCS is established. The characteristics of steady-state rotation angle scanning are qualitatively analyzed. Hence, the reference parameters, which required by control system design, are determined.(5) Based on the characteristics of the various stages of trajectory, the unified parachute-bomb system model of mass-rigid connected by column hinge and the approximate simulation mathematical model for the distribution is established. The efficiency of Monte-Carlo simulation is enhanced using the distributed model of submunitions given before.(6) The interdiction effectiveness of standoff dispenser is studied. Based on tactical strategy of segmental blocking runway, the"border window scan"method is used to search the minimum lift window (MLW) between the two damaged areas. Afterward the method of disable probability of runway (DPR) is established.(7) The multi-aim-line strategy is proposed, under which the runway will be blocked theoretically. According to the characteristic of dispenser, an optimal strategy of the first round attack is given.The new-type smart submunition is a kind of low-cost cargo warhead, and its cost-efficient will be enhanced through detection of target and trajectory correction. Therefore, the submunition researched in this dissertation is able to meet the requirement of our national defence. The work present in this dissertation can provide analysis and demonstration methods for other similar designs.