Air Defense Force Command Academy

Zhengzhou, China

Air Defense Force Command Academy

Zhengzhou, China
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Xie C.-M.,Beihang University | Xie C.-M.,Guilin Air Force Academy | Zhao Y.,Beihang University | Yang C.-C.,Air Defense Force Command Academy
Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | Year: 2011

Aiming at the remarkable influence of wing flexure noise on transfer alignment (TA) filtering, an online compensation algorithm is proposed on the assumption that the wing flexure noise is a time varying multi-order colored measurement noise from its character analysis. On the basis of typical Kalman filtering equations, new filtering equations capable of compensating multi-order colored noise without dimension extension are derived. According to the series measuring data and aided by a model estimating error F testing method, the algorithm is used to iteratively estimate auto-regressive orders, auto-regressive coefficients and white noise of wing flexure noise online which are thus taken advantage of to construct the measurement data, measurement matrix and measurement noise to perform compensating filtering. Finally, the algorithm is applied to a velocity plus attitude TA matching plan and compared with the method substituting wing flexure noise by pouring white measurement noise and extending system states. Simulation results show that the algorithm is of strong adaptability to new measurement data under time varying wing flexure noise as well as steady convergence and high accuracy estimating performance, which is feasible to achieve rapid and high accuracy airborne missile TA under hard air environment.

Ma X.-J.,Academy of Armored force Engineering | Wei W.,Academy of Armored force Engineering | Wei S.-G.,Academy of Armored force Engineering | Zhao P.,Air Defense Force Command Academy
Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology | Year: 2010

For extraction the no-load voltage harmonic parameters feature of a special vehicles' generator, an adaptive algorithm based on LMS was proposed with high analysis precision. The establishment of this type of generator no-load phase voltage harmonic analysis of the adaptive linear combiner model, the model is given in combination with adaptive methods of harmonic analysis of the theoretical derivation and implementation steps. Simulation and practical application results show that except for high accuracy, the proposed method is easy to be realized and can fulfill the requirements of generator fault feature extraction.

Xiong J.-L.,Ordnance Engineering College | Wu Z.-C.,Ordnance Engineering College | Sun Y.-W.,Ordnance Engineering College | Gao L.-N.,Air Defense Force Command Academy
Binggong Xuebao/Acta Armamentarii | Year: 2015

To analyze the cause of the excessive early-destruction rate of a certain fuze in target practice, and slove the use problem of the fuze, an experimental method in the laboratory is advanced. The interactional effect experiments of two fuzes are done in different conditions. Interactional effect rules of fuzes are analyzed, and the failure mechanism is explained. The research results show that relative pose, relative height, relative velocity, radiation energy and radiation frequency can affect the threshold interactional distance. And the early-destruction reason is that the radiation parameters are changing when the fuzes move to each other, and the frequency pulling happens when the radiation parameters meet the requirements. The detection voltage fluctuates to lead to the mis-action of the fuze. Owing to the design technology, early-destruction can not be avoided in fusillade. But the self-destruction rate can be reduced effectively when the artilleries are positioned in a reasonable distance. © 2015, China Ordnance Society. All right reserved.

Pang Y.-K.,China North System Engineering Institute | Han L.,China North System Engineering Institute | Zhang M.-Q.,China North System Engineering Institute | Zhang M.-M.,China North System Engineering Institute | Wu B.,Air Defense Force Command Academy
Binggong Xuebao/Acta Armamentarii | Year: 2010

Precise attack is a primary form of combat in the future battlefield and the precise guided weapons, especially the loitering attack missiles, trend to the integration of reconnaissance, attack and damage evaluation. This paper introduces the current applications and the existing problems of these loitering attack missiles in the world. Their development trends are also summarized and some suggestions for them are presented finally.

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