Science and Technology on Information Systems Engineering Laboratory

Beijing, China

Science and Technology on Information Systems Engineering Laboratory

Beijing, China
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Li T.,Science and Technology on Information Systems Engineering Laboratory
Proceedings - 2016 8th International Conference on Intelligent Human-Machine Systems and Cybernetics, IHMSC 2016 | Year: 2016

The differences on models and characteristics of three types of signals (the target echo, reverberation, noise) related to active sonar target detection are analyzed and summarized in this paper. According to the non-stationary characteristic of the reverberation, the first-order recursive filter is taken to stabilize the reverberation. The Itakura distance is used to to evaluate the stability of the actual reverberation data. © 2016 IEEE.


Ding X.-J.,Science and Technology on Information Systems Engineering Laboratory | Cui P.,Science and Technology on Information Systems Engineering Laboratory
2016 2nd IEEE International Conference on Computer and Communications, ICCC 2016 - Proceedings | Year: 2017

Conceptual modeling is considered as one of the most import phases within military simulation framework. Despite this importance, there are not many studies revealing the detailed model elements and its relationships. This paper studies the military system's connotation of conception, function and classification, and discusses the basic relationships and advanced relationships respectively. Constraints models are used to describe the constraints of proposed relationships finally. © 2016 IEEE.


Li Y.,Science and Technology on Information Systems Engineering Laboratory
2016 2nd IEEE International Conference on Computer and Communications, ICCC 2016 - Proceedings | Year: 2017

As available information on networked environment becomes more abundant, diversified, and dispersed, traditional fixed information service mode will be substituted by on-demand information search and convergence. Therefore, dynamic and precise express of user information requirement becomes an important impact factor of information service quality. Based on TIREM (task information requirement express model), a method is proposed on dynamic information requirement expression generation, along with a demo software developed to verify the feasibility of TIREM and the proposed method. © 2016 IEEE.


Xiaolian Z.,China Electronics Technology Group Corporation | Huang S.,Science and Technology on Information Systems Engineering Laboratory
2016 2nd IEEE International Conference on Computer and Communications, ICCC 2016 - Proceedings | Year: 2017

The weapon-target assignment problem is one of the important issues in the study of military operations. It is the key to give full play to the operational effectiveness of weapons, and is the guarantee of the victory of the war. Aiming at the weapon target assignment problem, a weapon target assignment model is established, which is based on the cloud model, combined with the genetic algorithm to solve the problem of target assignment. The algorithm has good performance, and the simulation experiment has tested the validity and feasibility of the algorithm. © 2016 IEEE.


Mao X.-B.,Science and Technology on Information Systems Engineering Laboratory
Zhendong yu Chongji/Journal of Vibration and Shock | Year: 2013

According to the GLR theory, the spectral decomposition theory for various vibration systems, including the damped gyroscopic system, viscous damped system and undamped gyroscopic system, was introduced. Moreover, the orthogonality relations between the eigenvectors of associating vibration system were established, which were then applied to solve the partial pole assignment problem under the condition of delayed state feedback. Taking the viscous damped system as an example, a constructive method was provided for the parametric solution in the multi-input case.


Mao X.,Science and Technology on Information Systems Engineering Laboratory
Chinese Control Conference, CCC | Year: 2013

In this paper, the time delay robustness for linear control systems using state feedback is discussed by analyzing the sensitivity of its eigenvalues with respect to time delay. Meanwhile, a new robustness measure is presented which can be applied to robust partial pole assignment problem(RPPAP) in control system design. The problem RPPAP can be formulated as an unconstrained minimization problem with the cost function involving the new robustness measure. A numerical algorithm with analytical formulation of the gradient for the cost function is provided. A numerical example is included to show the effectiveness of the proposed method. © 2013 TCCT, CAA.


Li D.,Science and Technology on Information Systems Engineering Laboratory
Proceedings - 2015 IEEE 12th International Conference on Ubiquitous Intelligence and Computing, 2015 IEEE 12th International Conference on Advanced and Trusted Computing, 2015 IEEE 15th International Conference on Scalable Computing and Communications, 2015 IEEE International Conference on Cloud and Big Data Computing, 2015 IEEE International Conference on Internet of People and Associated Symposia/Workshops, UIC-ATC-ScalCom-CBDCom-IoP 2015 | Year: 2015

Because of wide area deployment, large number of system nodes, and other characteristics of large scale distributed information systems, the system evaluation and testing are more difficult than traditional ones. In this paper, we summarize the requirements of large scale distributed information system evaluation and testing tasks, based on Open Stack architecture and virtualization technology, discuss the mechanism of constructing large scale distributed information system running environment, establish a prototype system and carried out a serious of simulation experiments to verify the feasibility of the proposed mechanism. © 2015 IEEE.


Mao X.,Science and Technology on Information Systems Engineering Laboratory
Proceedings - 2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics, IHMSC 2015 | Year: 2015

In this paper, we present a new model updating method for damped structural systems. The method has two distinguishing features which are of practical importance. First, it can deal with the spatially incomplete measured modal data without using any standard modal expansion or reduction techniques. Second, the updating is no spill-over which means that the large number unmeasured modal data of the original finite element model is kept invariant during the updating. A numerical example shows that the method is efficient. © 2015 IEEE.


Yu L.,Science and Technology on Information Systems Engineering Laboratory
WIT Transactions on Information and Communication Technologies | Year: 2014

This paper presents the design of two integer frequency dividers, divider-by-2 and programmable divider, which are both applied in wireless sensor networks. The divider-by-2 is used to generate the local oscillator signal for mixers and adopts the common-gate flip-flop with dynamic load. The programmable divider consists of prescaler and programmable counter. All the dividers are fabricated in 0.18 μm CMOS process and can work normally at 1 V in the range of 4-6 GHz. The phase noise of the divider-by-2 is -131.69 dBc/Hz at 3.5 MHz and its core power cost is 1.5 mW. The ratio of the programmable divider can be varied from 2403 to 2480 and its input sensitivity can be as small as -38 dBm at 5 GHz. © 2014 WIT Press.


Mao X.,Science and Technology on Information Systems Engineering Laboratory
26th Chinese Control and Decision Conference, CCDC 2014 | Year: 2014

In this paper, partial eigenvalue assignment problems for time-delayed systems are considered. A constructive method based on the orthogonality relations of quadratic pencil is provided. It is shown that it is possible to assign partial eigenvalues of a vibrating system while keeping the rest of the eigenvalues invariant in the presence of time delay provided that the original system is partial controllable for the eigenvalues that need to change. Specifically, the explicit solution for the single-input case and the parametric solution for the multi-input case are given. © 2014 IEEE.

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