The optimization objective of the subsystem is not included in subsystem-level optimization model of traditional collaborative optimization (CO) method. The shortcoming leads to that the subsystem is not necessarily optimal, and the optimal results cannot be obtained usually using the traditional CO. The optimization objective of the subsystem is added to subsystem optimization model, in which the original optimization objective is only that the shared variables are closest to the target values proposed by the system level. A collaborative optimization method with subsystem optimization is proposed. The effectiveness of the method is verified by the system design of the satellite.
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Unmanned Surface Vehicle (USV) is an important component of naval-unmanned-system. However, the lack of air-defense capability makes USV unable to satisfy requirements of naval battle in the future. This paper introduces the development of USV and shipboard airdefense system，then makes an analysis of suitable USVs anti-aircraft weapon and its combat mode. Finally, some key technologies of Unmanned Air-defense Surface Vehicle are presented，providing support for the development of our follow-up USV equipment.
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 The neural network is trained for the maneuvering of airbreathing hypersonic missile at extreme overload in the longitudinal plane, based on a large number of dichotomies simulation data; considering the dynamic pressure window and the attack angle window; setting the missile maneuvering initial height, Mach number and mass as neural network inputs, and the maximum value of the maneuvering time that the missile maneuvering with the extreme overload as neural network output. The trained neural network can predict the maximum maneuver time by the initial conditions. On the basis, longitudinal maneuvering penetration method is designed by setting the maximum value of the maneuvering time as the upper bound and random selecting the time that the missile maneuvering with the extreme overload. The feasibility of this method is verified by simulation.

 Besides the traditional fuzewarhead system using the tapered fixed angle fuze, the technology of forward detection using wide-beam can also be used in the design of fuzewarhead system against stealth aircraft targets. The influences on the ranging accuracy by step frequency modulation Doppler coupling effect are analyzed in this article, and the parameters for the fuzewarhead system are also selected and analyzed. The results of simulation indicate that the range of velocity measurement error should be regulated below 28 m/s in order to make the offset of target distance image in a single unit.

A sliding mode terminal guidance law for KKV based on variable structure control theory is designed to intercept the high maneuver TBM target. The model of TBM maneuver target is established and a system model is also established according to the relative motion equations of the missile and the target. The terminal guidance law of the logitudinal plane is deduced using exponential reaching law. The simulation results show that the adaptive sliding mode guidance law has the advantages of fast response, strong robustness, small miss distance, and powerful interception result when intercepting maneuver TBM target..
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The Single Roll Control Vehicle (SRCV) has a simple lifting configuration with a fixed angle of attack, and maneuvers using a single roll control system to change the direction of lift. However, the characteristics of single roll control make it difficult to satisfy the instructions in vertical and lateral planes at the same time. The existing guidance methods cannot effectively be employed in such vehicles. The multiple constraints during the reentry process also add the difficulty of guidance design. This paper obtains the requirements of the guidance method which is suitable for SRCV via investigating the adaptability of existing guidance law. Then a guidance command adapter is presented. Based on it, a reentry guidance method is given. The simulation result illustrates that the method achieved the accurate landingpoint control with constraints, requiring continuous guidance command which is favorable for attitude control system.

For the servo vibration of air defense missile, this paper analyzes its mechanism and introduces the ground testing verification method. A case of servo vibration ground test is used to disclose the vibration phenomenon and how to evaluate the stability of system using vibration response data is also presented.

The conception of softwarebased electronic blue force equipment is proposed in this paper. Its definition, connotation, scope, technical architecture are given and its merit is summarized. A new idea is provided for developing electronic blue force equipment.

Meter-band radar always suffers low range resolution. To solve this problem, a new pulse compression method based on iterative adaptive technique is proposed. First the traditional matched filter model is constructed, and then the optimal weight vector expression is derived based on minimum mean-square error (MMSE), the improved resolution range profile is obtained via iteratively update the weights and the estimation of range profile. Compared to matched filter, the proposed method is able to overcome the limit of bandwidth to improve the range resolution of meter-band radar. Simulation results demonstrate the effectiveness and superiority of the proposed method.

For the maritime moving target, aerospace cooperative observation system is complex and more task requirements are needed. The system modeling based on the executable model can be used to realize the research from the architecture model to the simulation application integrated. Based on the theory about unified platform of defense modeling, the modeling for aerospace cooperative observation system is conducted and the reliability of the system is analysed. The effectiveness and the practicability of the system in the modeling and simulation are verified.

Basic principle and execution steps of clustering and sorting algorithm are introduced carefully. A kind of fast clustering and sorting technology is proposed. This technology, based on the concept of narrow band search, makes use of the characteristics that there are strong correlations between the distributions of objects in the adjacent search periods and the same resident frequency bands and the data obtained and processed to help and simplify the signal sorting process in the current period so as to improve real-time capability and reliability. By digital simulation, the performance of the algorithm is explored and the validity of the algorithm is proved successfully.

How to extract the differential signal in noise pollution signal is discussed in this article. Firstly, the mathematical meaning of the classic differentiator, and the cause of the noise amplification is analyzed. Based on the theory of steepest trackingdifferentiator, the phase delay compensation is forecasted and the frequency characteristic is analyzed. Then the steepest tracking differentiator in the line of sight acceleration is simulated and analyzed.