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Since its inception, the Kalman filter, which represents the optimal estimator for linear, Gaussian state space models, has been adopted for a wide array of practical applications due to its efficient, recursive formulation. At the same time, the field of nonlinear time series analysis has produced powerful methods for filtering time series with deterministic dynamics. These nonlinear filters differ...
In the traditional terminal guidance, the state estimator and guidance law are design independently by assuming the validity of the separation principle and the certainty equivalence principle, which are only valid for linear systems with Gaussian noise. This paper considers the nonlinear terminal guidance system for a target interception problem by multiple vehicles. Firstly, the probability density...
A cooperative guidance law is developed for multiple interceptors to intercept multiple high-speed maneuvering targets cooperatively. Since the existence of background noise, uncertainties of the targets and low detection accuracy of the interceptors, only a dynamic region describing the location of targets by a probability density function can be obtained. A framework of cooperative detection is...
Exo-atmospheric Interceptor with pulse thruster was researched. Firstly, considering with the measurement noise of rotation rate of LOS (line of sight) and error of estimating relative distance between missile and target, the LOS rate was predicted by the state, control input, measurement noise of LOS and estimation error of relative distance on current moment. Secondly, the On-Off guidance law was...
This paper proposes a new type of extended state observer (ESO) for state observation of nonlinear system with measurement noise. ESO can observe the inner and outer disturbance of uncertain system and it is the foundation of active disturbance-rejection controller, while the measurement noise degrades the performance of the normal ESO. In this paper, fal function feedback structure is used to deal...
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