Aiming at the problem of fault estimation and fault-tolerant control under the constraints of actuators, the longitudinal and lateral linearized motion models of guided rocket containing the fault model were firstly established. Then, considering the time-varying uncertainty of the system parameters, the fault diagnosis and estimation methods based on neural network observers were introduced to effectively observe the degree of fault and system state parameters. By designing a robust adaptive fault-tolerant compensation controller, it solved the problem of state convergence under different degrees of actuator fault or stuck fault. Finally, three fault types of numerical simulations verified the effectiveness and robustness of the proposed algorithm for fault handling of actuators.

In order to solve the problem that the traditional subspace algorithm can not correctly distinguish the mixed sources, a joint estimation algorithm of incident angle and polarization parameters of mixed signals based on orthogonal dipole array is proposed in this paper. Firstly, according to the estimation of the angle and polarization parameters of the uncorrelated signal, the orthogonal dipole uniform line array is divided into two overlapping subarrays, and the target matrix is constructed by using the denoising autocorrelation matrix and the cross-correlation matrix. The angle information of the uncorrelated signal is estimated according to the principle of subspace orthogonality, and the polarization information of the uncorrelated signal is estimated by using the correlation between the received data of the orthogonal dipole array. Secondly, the angle and polarization parameters of the coherent signals are estimated, and the eigenvectors corresponding to each correlation group are rearranged to obtain a new reconstruction matrix to restore the rank of the data covariance matrix. Thus, the angle estimation of the coherent signal in each coherent group is realized. The least square method is used to estimate the polarization information of the coherent signal in each coherent group. Finally, the simulation is used to validate the effectiveness and reliability of the proposed algorithm. Compared with the existing methods, the proposed algorithm reduces the consumption of hardware resources, improves the accuracy of angle estimation of coherent signals, and can realize the estimation of polarization parameters. 

In order to solve the problem of low real-time and low matching accuracy of interference mode in adaptive interference decision making, this paper presents a SVM based on IGA for interference mode adaptive selection. The penalty parameters and kernel function parameters of SVM were optimized by IGA to enhance the learning ability and generalization ability of the model and improve the real-time and accuracy of interference decision making. IGA-SVM is compared with SVM based on GS method in terms of the accuracy and real-time of interference decision. The simulation results show that, in adaptive interference decision making, the real-time performance and interference mode matching accuracy of IGA-SVM are improved compared to traditional GS-SVM.

On the background of THAAD (Terminal High Altitude Area Defence) missile defence campaign, the defence capability and trajectory simulation of THAAD missile are investigated. Firstly, the THAAD missile’s operational process, the tactical performance, configuration parameters and thrust parameters are presented. The aerodynamic coefficients of the missile are acquired by the Missile DATCOM software. Then, the defence trajectory of a THAAD missile is designed, and the predicted impact point is estimated according to the motion characteristics of the incoming missile. According the predicted impact point, the launch data, flight program angle and launch time of the interceptor missile are calculated. Finally, THAAD interception trajectory against a medium-range ballistic missile is simulated by taking the THAAD deployed in South Korea as an example.

In order to solve the problem of power system for spacecraft, a thermoelectric generator based on organic/inorganic composites is designed. This generator utilizes the temperature difference induced by the sunlight. The power system of a solar array can be improved via thermoelectric generator. The rationality, reliability, economy and advancement of its design principle are explained. Taking n-type polyvinylidene fluoride (PVDF)/Ni nanowire and Cu electricity plate as an example, the results show that when the thermoelement length is short, the contact effect must be considered. Besides, when taking a suitable thermoelement length, a large output power density of the thermoelectric device can be obtained, and the specific power of mass reaches up to 7.21W/kg. Compared with the original solar array, this new design can effectively utilize extra-satellite resources, save costs and provide energy.

Firstly, the development process of AGM-88 series of anti-radiation missiles is introduced. Secondly, the latest version AGM-88E weapon system and its program features are discussed. Then, the operational modes are analyzed. Finally, the development ideas and technical trends of AGM-88 series of anti-radiation missiles are summarized.

Near space solar powered UAV has the advantages of long flight time and high flight altitude. It can effectively fill the gaps of tasks in the near space region and improve the spatial information grid. At present, military powers such as Europe and America are carrying out the high-altitude pseudosatellite projects based on near space solar powered UAV. First, this paper introduces the development status of solar powered UAV, and puts forward four potential military application scenarios by analyzing its characteristics. Finally, the key technologies of near space solar powered UAV are discussed to offer support for the follow-up development.