雷達(dá)機(jī)動(dòng)目標(biāo)運(yùn)動(dòng)模型與跟蹤算法研究
[Abstract]:The problem of target tracking is a problem that is developed and researched deeply with the change and development of the tracking target. Through the target tracking, the accurate estimation of the target state is realized, so that a stable data base is provided for a plurality of subsequent information processing, such as the target threat estimation, the command decision and the like. As a result of the emergence of the new tracking target and the continuous demand for the target tracking information, the tracking of the maneuvering target is becoming the focus of the current research. In this paper, the research on the motion modeling and the filter tracking algorithm of the radar maneuvering target is mainly carried out in the "A Study on the Multi-source Information of the Sky-sky" of 863. The main contents of the thesis include: In this paper, the research background of the paper is introduced, and the two main problems in the tracking of the maneuvering target are introduced: the target motion model, the research status of the tracking algorithm are discussed in detail, and the research in this paper is also introduced. On the basis of the parameter "a hand" and the "a hand" as the characteristic parameters, the strong maneuvering target transportation based on the parameter of the parameter of the parameter is established. The characteristics of the Singer model and the Jerk model are analyzed in detail, and the characteristics of the target motion are analyzed by analyzing the characteristics of the Singer model and the Jerk model. In this paper, the parameters of the strong maneuvering target are set up based on the parameters and the parameters, and the parameters of the strong-maneuvering target are set up. In this paper, the state-to-measure model of the motion model of the P-P parameter is derived by the discretization of the motion model of the P-P parameter, and the motion model of the motion model is analyzed in detail. The experimental results show that the motion model has a strong target maneuver model. The purpose of this paper is to provide an object based on the modified non-sensitive Kalman filter. in a UKF algorithm, the calculation of the filter gain is mainly determined by two covariance decisions: state covariance, state and measured covariance, and when the target is mobile, the filter gain will lag behind the maneuvering state of the target, so as to The tracking error is increased. Thus, in the tracking process, the correction factor of the noise covariance is estimated by real-time, then the prediction state covariance is corrected in real time by the correction factor, the state covariance is updated with the modified prediction covariance, the filter gain is calculated by using the covariance of the adaptive factor correction, so that the corrected filter gain is matched with the movement of the target, so that a better filter is obtained The experiment shows that the algorithm is better than the UKF. The advantages of the fusion UT transform and the EKF have the advantages of improving the tracking performance and the less operation time of the algorithm. A target tracking algorithm. (1) Unsensitive extension of Carl The Kalman filter tracking algorithm. UKF has better tracking performance than EKF in a non-linear tracking system, but the required calculation time is greater than E. Based on this reason, a target tracking method of fusion-insensitive transform (UT) and extended Kalman filter is proposed, which is mainly used to convert the state covariance of UKF and the multi-vector of the mutual covariance of the state and the measurement. a plurality of addition calculations to effectively reduce The operation time of the algorithm is as follows: the characteristics of the diversity Sigma particles transformed by the algorithm and the characteristics of the operation time of the EKF are fast, so that the better filtering and tracking precision is preserved, and the algorithm less computation time. (2) Adaptive non-sensitive extension of Carl In the process of the non-sensitive extended Kalman filter, the residual information is used to estimate and correct the two noise covariance in real time by means of exponential decay and forgetting factor, so as to realize the noise coordination. The experimental results show that the two algorithms have better tracking precision than UKF and have the same In order to improve the accuracy of the model probability estimation, a model-based probability model is proposed. An interactive multi-mode algorithm is used to calculate the state information after filtering. The calculation of the weighting factor (i.e., the probability of the model) mainly uses two types of information: the new interest and the model probability prediction value, and the method does not utilize the effective information of the current time state covariance to cause the opposite mode. based on this characteristic, the information of the state covariance is fused to obtain another weighting factor, and the model probability estimation value in the IMM algorithm is corrected by the weighting factor, that is, the weight The algorithm not only uses the prediction model probability factor but also uses the current state variance weighting factor, so it has more accuracy. The model selection probability is estimated by the experiment. The experiment verifies that the algorithm is more accurate than the IMM Finally, the paper sums up the work of the paper, and points out that the pape
【學(xué)位授予單位】:西安電子科技大學(xué)
【學(xué)位級別】:博士
【學(xué)位授予年份】:2014
【分類號】:TN953
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