Validation of the NATO Armaments Ballistic Kernel for use in small-arms fire control systems

In support for the development of a new small-arm ballistic computer based on the NATO Armaments Ballistic Kernel(NABK) for the Canadian snipers, DRDC Valcartier Research Centre was asked to carry out high-fidelity 6 degree-of-freedom(6-DOF) trajectory simulations for a set of relevant vignettes for the snipers, and to compare the direct fire 6-DOF simulation results with those obtained with the 4-DOF NATO Armaments Ballistic Kernel(NABK) adapted to simulate small-arm ammunition trajectories. To conduct this study, DRDC Valcartier Research Centre used BALCO v1.0b. This paper presents(1) the process and the methodology employed to carry out the sniper direct fire solution study,(2) the modeling and the simulation of the sniper projectile, the approach used in calculating the firing solutions, and the results of direct fire simulations for the sniper vignettes, and(3) an analysis of firing solutions obtained with the BALCO engine versus those of NABK. The work presented in this paper serves to validate the use of NABK for the new sniper ballistic computer.

分布式冗余磁盘新概念及其实现研究

为解决网络环境下共享磁盘系统的可靠性问题，提出了分布式冗余磁盘技术（ＤＲＯ）。介绍ＤＲＤ的基本思想和概念结构，在给出了几种实现结构以后对ＤＲＤ涉及的关键技术进行了分析。可以认为ＤＲＤ技术是分布式技术与ＲＡＩＤ技术很自然而有趣的结合与发展。

基于城市道路实时信息的VANET动态路由协议

文章提出动态路由算法DRDC(基于城市道路实时信息的VANET动态路由算法),该路由算法利用实时车流信息来动态创建基于道路的路径,并采用动态路由更新策略和基于下一跳速度矢量选择最优路径来降低端到端时延。仿真结果表明,与现有的VANET路由算法相比,该算法能有效改善分组的传输效率,降低端到端的传输时延。