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	Applications of two-way satellite time and frequency transfer in the BeiDou navigation satellite system 期刊论文 OAI收割 SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2016, 卷号: 59, 期号: 10 作者: Zhou, ShanShi; Hu, XiaoGong; Liu, Li; Guo, Rui; Zhu, LingFeng \| 收藏 \| 浏览/下载：25/0 \| 提交时间：2019/05/23 Bds Twstft Satellite Clock Prediction Accuracy System Reference Time Allan Variance
	Applications of two-way satellite time and frequency transfer in the BeiDou navigation satellite system 期刊论文 OAI收割 SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2016, 卷号: 59, 期号: 10 作者: Zhou ShanShi; Hu XiaoGong; Liu Li; Guo Rui; Zhu LingFeng \| 收藏 \| 浏览/下载：21/0 \| 提交时间：2021/12/06 ORBIT BDS TWSTFT satellite clock prediction accuracy system reference time Allan variance
	The application of digital signal processing (DSP) for the real time solving of artillery fire control exterior trajectory (EI CONFERENCE) 会议论文 OAI收割 2012 IEEE 3rd International Conference on Software Engineering and Service Science, ICSESS 2012, June 22, 2012 - June 24, 2012, Beijing, China 作者: Li D. 收藏 \| 浏览/下载：141/0 \| 提交时间：2013/03/25 Method of gain firing data by calculate the group of differential equation has the advantages of high repeatability and high accuracy But much of the CPU time is occupied by the task of re-iteration in computational processing. Therefore it is not the real time processing. This paper introduces a method to quickly determine angle of firing by iteration method which realizes Runge-Kutta method for the equations of exterior ballistic according to the model of mass center motion of projectile. Moreover it also provides the flow of real-time integral solution and be proved by the simulation of MATLAB. Its accuracy satisfies the requirements. This work can be as reference for the design of opt-electrical fire control system and the demonstration work. 2012 IEEE.
	Optimal design of strap-down inertial navigation support under random loads (EI CONFERENCE) 会议论文 OAI收割 2010 IEEE International Conference on Information and Automation, ICIA 2010, June 20, 2010 - June 23, 2010, Harbin, Heilongjiang, China 作者: Li M. 收藏 \| 浏览/下载：29/0 \| 提交时间：2013/03/25 In order to realize miniaturization and light weight of the strap-down inertial navigation system and then to make sure that it works well under random loads optimal design is applied to the strap-down inertial navigation support with the methods of topology optimization and size optimization. Firstly based on the installation requirement of devices and connection requirement of the support and the carrier the initial structure of the support is designed. Topology optimization with FEA software ANSYS is adopted on the initial structure to get the basic one. Then 5 critical sizes are chosen as design variables and the support structure is optimized by means of size optimization to reach light weight with satisfying the requirement of dynamic stiffness. Finally random vibration analysis is applied to the initial structure. In the mean time random vibration test is carried out to qualify the analysis method. After the qualification a random vibration analysis is applied to the optimized support structure to get the rms of displacement response and acceleration response of the support to validate whether the optimized structure is appropriate. The results indicate that the dynamic stiffness of the optimized support structure satisfies the design requirements and its weight is lighter 49.38% than that of the initial one. This research can be a reference to the structure design of supports under random loads and the result has been applied to the development and manufacture of a prototype aerocraft. 2010 IEEE.
	Bootstrap loader design of aerospace payload controller based on TSC695F (EI CONFERENCE) 会议论文 OAI收割 2010 2nd International Conference on Computational Intelligence and Natural Computing, CINC 2010, September 13, 2010 - September 14, 2010, Wuhan, China Xu W.; Piao Y. 收藏 \| 浏览/下载：37/0 \| 提交时间：2013/03/25 Anti-radiation TSC695F is usually used as aerospace payload controller in tasks to ensure the aerospace payload having extremely high reliability in abominable space environment. The processor bases on SP ARC V7 architecture with parity check and EDAC so it could design out high reliable bootstrap loader to guarantee the operation system of VxWorks and application codes loaded correctly and worked stable and high effective. First this paper put forward the system hardware composition and boot mode which apply for aerospace payload then it makes clear the related contents of register group initialization stack initialization system hardware initialization in bootstrap loader of TSC695F and give out the method to establish TRAP table. That's all through comparing different type of organize mode of program image. After that compiling of target codes have been described and the kernel code of MakeFile had been given at the same time for reference aimed at the realization of engineering. Although this paper is based on TSC695F but it could be extended to other embedded system based on SP ARC for bootstrap loader analysis and design for example the TSC697 which based on SP ARC V8 with higher performance so this paper has extremely high engineering value. 2010 IEEE.
	identity anonymity for grid computing coordination based on trusted computing 会议论文 OAI收割 6th International Conferernce on Grid and Cooperative Computing, Urumchi, PEOPLES R CHINA, AUG 16-18, Shi Zhiguo; He Yeping; Huai Xiaoyong; Zhang Hong \| 收藏 \| 浏览/下载：19/0 \| 提交时间：2011/06/29 anonymous coordination authentication anonymous identity authentication distributed grid system grid computing security platform configuration register reference trusted agent time self-authentication feature trusted computing virtual organization grid co
	Target track system design based on circular projection (EI CONFERENCE) 会议论文 OAI收割 ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China Song H.-J.; Zhu M.; Hu S.; Shen M.-L. 收藏 \| 浏览/下载：22/0 \| 提交时间：2013/03/25 Template matching is the process of searching the present and the location of a reference image or an object in a scene image. Template matching is a classical problem in a scene analysis: given a reference image of an object decide whether that object exists in a scene image under analysis and find its location if it does. The template matching process involves cross-correlating the template with the scene image and computing a measure of similarity between them to determine the displacement. The conventional matching method used the spatial cross-correlation process which is computationally expensive. Some algorithms are proposed for this speed problem such as pyramid algorithm but it still can't reach the real-time for bigger model image. Moreover the cross-correlation algorithm can't be effective when the object in the image is rotated. Therefore the conventional algorithms can't be used for practical purpose. In this paper an algorithm for a rotation invariant template matching method based on different value circular projection target tracking algorithm is proposed. This algorithm projects the model image as circular and gets the radius and the sum of the same radius pixel value. The sum of the same radius pixel value is invariable for the same image and the any rotated angle image. Therefore this algorithm has the rotation invariant property. In order to improve the matching speed and get the illumination invariance the different value method is combined with circular projection algorithm. This method computes the different value between model image radius pixel sum and the scene image radius pixel sum so that it gets the matching result. The pyramid algorithm also is been applied in order to improve the matching speed. The high speed hardware system also is been design in order to meet the real time requirement of target tracking system. The results show that this system has the good rotate invariance and real-time property.
	High-speed CCD camera system for the measurement of flight time of cannonballs (EI CONFERENCE) 会议论文 OAI收割 2005 Beijing International Conference on Imaging: Technology and Applications for the 21st Century, May 23, 2005 - May 26, 2005, Beijing, China 作者: Gong Y. 收藏 \| 浏览/下载：27/0 \| 提交时间：2013/03/25 We have built a high-speed sensitive camera system to capture the image sequence of cannonballs with accurate time reference which can measure the flight time of cannonballs between leaving the cannon and explosion precisely. The camera system is composed of two identical cameras of high frame frequency linear CCD calibrated with the same time base. In this paper we present the operating principle of the camera system and discuss the scheme of high-speed processing of volumes of image data. The real-time measurement less than 1 millisecond can be achieved by the proposed approach.