Development Of Decoupling System Of Strapdown Seeker

Precise Attack has become the main trend in the modern weapon development. And it is the seeker that plays an important role in the precise guidance of homing missile system. During the whole flight time, the seeker only works in the self-guidance stage. When the radar works, a new attitude feedback loop is added into the missile system, so the missile control structure suddenly changes, which will affect the system integral performance, therefore the seeker design needs to solve the coupling problem.Firstly, the dissertation introduces some basic decoupling-related concepts, the reason of coupling, the purpose and methods of decoupling. The decoupling scheme of this paper, that is using the output signal of the rate gyroscope installed in the seeker as the decoupling signal, is brought forward based on the domestic and foreign studies of strapdown seeker, through comparing various decoupling methods and referring to the decoupling achievements of servo seeker. The dissertation also includes the analyses of scheme feasibility and system stability, discusses the resources of decoupling signal and their merits and drawbacks, and works over how to design the control system of the missile with decoupling part. Then, the theories are proved by simulation. At last, the scheme is applied to the multimode strapdown seeker. According to the particularities of the multimode strapdown seeker, the paper chooses a proper development program that is based on the ADS8364 and DSP C6000 platform.The contents of the dissertation are from theory representation to system simulation, from scheme proposal to system development, so the paper has great reference value and practical value for the further study.