An algorithm for moving target detection in IR image based on grayscale distribution and kernel function

A fast algorithm based on the grayscale distribution of infrared target and the weighted kernel function was proposed for the moving target detection(MTD) in dynamic scene of image series. This algorithm is used to deal with issues like the large computational complexity, the fluctuation of grayscale, and the noise in infrared images. Four characteristic points were selected by analyzing the grayscale distribution in infrared image, of which the series was quickly matched with an affine transformation model. The image was then divided into 32×32 squares and the gray-weighted kernel(GWK) for each square was calculated. At last, the MTD was carried out according to the variation of the four GWKs. The results indicate that the MTD can be achieved in real time using the algorithm with the fluctuations of grayscale and noise can be effectively suppressed. The detection probability is greater than 90% with the false alarm rate lower than 5% when the calculation time is less than 40 ms.

Value Distribution of L-Functions with Rational Moving Targets

We prove some value-distribution results for a class of L-functions with rational moving targets. The class contains Selberg class, as well as the Riemann-zeta function.

SLP-2: a potential new target for improving mitochondrial function in Parkinson's disease

Parkinson＇s disease （PD） is a progressive neurodegenerative disease, which is generally considered a multifactorial disorder that arises owing to a combination of genes and environmental factors. While most cases are idiopathic, in about 10% of the patients a genetic cause can be detected, ascribable to mutations in more than a dozen genes. PD is characterized clinically by tremor, rigidity, reduced mo- tor activity （bradykinesia）, and postural instability and pathological- ly by loss of dopaminergic （DA） neurons in the substantia nigra pars compacta, loss of DA innervation in the striatum, and the presence of a-synuclein positive aggregates in the form of Lewy bodies. The symptomatic treatment of PD with levodopa, which aims at replac- ing dopamine, remains the gold standard, and no neuroprotective or disease-modifying therapy is available. During treatment, the disease continues to progress, and long-term use of levodopa has import- ant limitations including motor complications termed dyskinesias. Therefore, a pharmacological therapy able to prevent or halt the neu- rodegenerative process is urgently required.

SAR Imaging of Moving Target Based on Quadratic Phase Function

In this paper, a novel signal processing technique hasbeen developed to refocus moving targets image from their smeared responses in the Synthetic Aperture Radar (SAR) image according to the characteristics of the received signals for moving targets. Quadratic Phase Function is introduced to the parameters estimation for moving target echo and SAR imaging. Our method is available even under a low SNR environment and acquiring an exact SAR image of moving targets. The simulated results demonstrated the validity of the algorithm proposed.

Simulink/RTW下xPC Target的S函数驱动模块开发

MathWorks公司提供了一个基于RTW的xPC Target。使用xPC Target,用户可以将一台PC机转变为一个实时系统,以实现对外部I/O设备的实时控制。xPC Target为外部I/O设备提供了部分驱动,但也支持其它I/O设备的连接,这需要用户编写驱动模块来实现对设备的接入。以研祥PCL818HD为例,介绍了驱动模块的实现过程。

On Proverb Translation: A Functional Equivalence Approach

Translation is regarded as a cross-cultural,cross-social,and cross-linguistic communicative activity.In this light,the process of translation is perceived as one of establishing functional equivalence between the source text and the target text in order for the latter to be as faithful as possible to the former in both meaning and function.Proverbs are language-and culture-specific expressions,which often cause difficulties in translation.This paper aims to approach proverb translation from the functional equivalence perspective.

Bayesian target tracking based on particle filter

For being able to deal with the nonlinear or non-Gaussian problems, particle filters have been studied by many researchers. Based on particle filter, the extended Kalman filter （EKF） proposal function is applied to Bayesian target tracking. Markov chain Monte Carlo （MCMC） method, the resampling step, ere novel techniques are also introduced into Bayesian target tracking. And the simulation results confirm the improved particle filter with these techniques outperforms the basic one.

A novel interconnect-optimal repeater insertion model with target delay constraint in 65 nm CMOS

Repeater optimization is the key for SOC （System on Chip） interconnect delay design. This paper proposes a novel optimal model for minimizing power and area overhead of repeaters while meeting the target performance of on-chip interconnect lines. It also presents Lagrangian function to find the number of repeaters and their sizes required for minimizing area and power overhead with target delay constraint. Based on the 65 nanometre CMOS technology, the computed results of the intermediate and global lines show that the proposed model can significantly reduce area and power of interconnected lines, and the better performance will be achieved with the longer line. The results compared with the reference paper demonstrate the validity of this model. It can be integrated into repeater design methodology and CAD （computer aided design） tool for interconnect planning in nanometre SOC.

基于S-Function的xPC目标环境下I/O板卡驱动开发

提出了xPC目标环境下采用C MEX S函数实现I/O板卡驱动的开发方法;采用xPC建立实时环境,通过反射内存卡组成实时网络,来实现控制系统的快速原型化和硬件在回路仿真测试,与传统的半物理仿真相比要快捷很多;与硬件设备实时通讯的I/O板卡是实现半物理实时仿真的基础;详细介绍了S-Function的编写、PCI总线的基本概念以及xPC环境下编写驱动的关键问题,在此基础上实现了ADLINK多功能DAQ板卡在xPC环境下的驱动开发;驱动测试结果表明,AD板卡和DA板卡都能稳定工作,通讯稳定,数据误差小,该方法具有较强的移植性和参考性。

Target Tracking and Obstacle Avoidance for Multi-agent Systems

This paper considers the problems of target tracking and obstacle avoidance for multi-agent systems. To solve the problem that multiple agents cannot effectively track the target while avoiding obstacle in dynamic environment, a novel control algorithm based on potential function and behavior rules is proposed. Meanwhile, the interactions among agents are also considered. According to the state whether an agent is within the area of its neighbors＇ influence, two kinds of potential functions are presented. Meanwhile, the distributed control input of each agent is determined by relative velocities as well as relative positions among agents, target and obstacle. The maximum linear speed of the agents is also discussed. Finally, simulation studies are given to demonstrate the performance of the proposed algorithm.

Average Damage Caused by Multiple Weapons against an Area Target of Normally Distributed Elements

This paper investigates the effect of launching multiple weapons against an area target of normally distributed elements. We provide an analytical form of the average damage fraction and then apply it to obtain optimal aimpoints. To facilitate the computational efforts in practice, we also consider optimizations over given constrained patterns of aimpoints. Finally, we derive scaling laws for optimal aimpoints and optimal damage fraction with respect to the radius of the area target.

STUDY ON ALGORITHM OF SENSOR MANAGEMENT BASED ON FUNCTIONS OF EFFICIENCY AND WASTE

Sensor management plays an important role in data fusion system, and this paper presents an algorithm of sensor management that can be used in target detection, identification and tracking. First, the basic concept, rule, range and function of sensor management are introduced. Then, the quantifying problems of target priority and sensor (or combination)-target pairing in multisensor management are discussed and the efficiency and waste functions are established based on the functions of target priority and sensor-target pairing. On this basis, a distribution algorithm of multi-sensor resources is given, which is optimized by the principle of maximum synthesis efficiency in the multisensor system and constrained by sensor maximum tracking power and what target must be scanned. In addition, the waste measure of sensor resources is introduced to improve the algorithm. Finally, a tactical task that includes three sensors and ten targets is set, and the simulation results show that the algorithm is feasible and effective.

Evaluation of excitation function by TALYS code for producing ^(109)Cd with different ion beams

TALYS code was used to calculate excitation functions for proton induced onn atAg,natCd and 113In,deuteron induced onn atAg and alpha induced on natPd that lead to produce 109Cd radioisotope using low and medium energy accelerators;calculates was performed out up to 50 MeV.Recommended thickness of the targets according to SRIM code was premeditated.Theoretical integral yields for any reaction were computed.TALYS 1.0 code predicts that production of a few curries of 109Cd is feasible using a target of high isotopically enriched 110Cd,proton energy of 15 to 27 MeV,however high cost of the enriched target seems to be not a practical economic alternative to produce1 09Cd.The Ag+p and Ag+d processes can be an efficient route and economic for the production of millicurries of the radioisotope with incident beam energy less 15 MeV using low energy accelerator.

一种靶弹多功能控制器设计与实现

靶弹是模拟敌方来袭导弹技战术特性的实体空中靶标;针对退役导弹改装靶弹中面临的改装线路复杂、对动目标供靶精度不足等实际问题,对靶弹飞行控制规律和改装设计方法进行了研究探索,创新了靶弹制导控制方法,综合采用靶弹飞行控制回路状态转换、动目标供靶航路精确控制、靶弹功能扩展等关键技术,设计研制了集电气改装、接口转换、目标导引、安全控制等功能于一体的靶弹多功能控制器,实现了退役飞航导弹到多用途靶弹的通用化、标准化改装,探索了一种经济而有效的靶弹开发方法;试验结果表明,该多功能控制器具备简便可靠、工作量小、通用性好、弹道控制灵活等突出特点,较好地解决了靶弹改装难题,满足了防空武器系统试验训练的需要。

在xPC Target中使用S函数创建RDC模块

介绍了 S 函数的基础理论和利用 S 函数对 Simulink 中所没有的模块进行设计的方法,并采用此方法对 RDC 模块进行了具体的设计,通过仿真实验,验证了该方法的正确性。

New algorithm of target classification in polarimetric SAR

The different approaches used for target decomposition （TD） theory in radar polarimetry are reviewed and three main types of theorems are introduced： those based on Mueller matrix, those using an eigenvector analysis of the coherency matrix, and those employing coherent decomposition of the scattering matrix. Support vector machine （SVM）, as a novel approach in pattern recognition, has demonstrated success in many fields. A new algorithm of target classification, by combining target decomposition and the support vector machine, is proposed. To conduct the experiment, the polarimetric synthetic aperture radar （SAR） data are used. Experimental results show that it is feasible and efficient to target classification by applying target decomposition to extract scattering mechanisms, and the effects of kernel function and its parameters on the classification efficiency are significant.

Excitation Functions for Reactions Induced by Deuteron in Iron

Excitation functions are measured for the products of 55Co,56Co,57Co,58Co,52Mn and 54Mn nuclides by deuteron induced reactions in natural iron in bombardingenergy range below 20 MeV.The stacked activation foil technique is used to carry outthe measurements.The γ-ray spectra of individual foils are determined using a Ge（Li）detector.

RADAR TARGET RECOGNITION BASED ON NEURAL NETWORK

The problem of radar target recognition using range profiles is investigated in this paper, based on a Radial Basis Function Network(RBFN). A preprocessing method is proposed, which performs amplitude average of the range profiles to obtain more stable patterns. After pointing out the limitedness of traditional empirical formula, this paper also gives a method of estimating the shape parameter a of a Gaussian kernel function according-to spatial distribution of the training samples. It is shown that the method proposed in this paper offers promise for target recognition, from both the theoretical analysis and the experimental results of rotating platform imaging based on data acquired in a microwave anechoic chamber.

基于x86和xPC Target的控制器快速原型设计

MathWorks公司的RTW技术已被广泛地用于硬件在回路的仿真(HIL)和产品的快速原型开发。基于x86处理器和xPC Target,通过快速原型技术设计的控制器就很好地利用了RTW技术,该控制器支持代码的自动生成和优化,是研究智能算法在实际控制中应用的一个良好平台。在详细介绍控制器的设计过程后,结合实验室水箱,基于该控制器进行了一容水箱液位模糊控制实验。实验结果表明:控制器工作稳定,控制效果良好,基于该控制器来设计控制系统更加灵活、方便。