后方油库整体生存概率分析计算

针对我军后方油库特点,探讨了油库整体生存概率计算的基本思路和方法,分析了各类分项目标生存概率的计算方法,采用层次分析对后方油库各分项目标权值进行了详细分析计算,可为后方油库伪装防护效能评估提供依据。     

近红外光谱技术快速测定汽油中芳烃、稀烃含量

对近红外光谱法预测汽油中的稀烃、芳烃含量进行了研究,用全交互验证法对36个不同油库、加油站汽油样品中的稀烃、芳烃含量进行了预测。研究结果表明,近红外光谱法预测汽油中的稀烃、芳烃含量方法可靠,预测结果能够满足国家标准对稀烃、芳烃含量分析的误差要求。     

Effectiveness of (R,Q) policies in one‐warehouse multiretailer systems with deterministic demand and backlogging

Consider a distribution system with a central warehouse and multiple retailers. Customer demand arrives at each of the retailers continuously at a constant rate. The retailers replenish their inventories from the warehouse which in turn orders from an outside supplier with unlimited stock. There are economies of scale in replenishing the inventories at both the warehouse and the retail level. Stockouts at the retailers are backlogged. The system incurs holding and backorder costs. The objective is to minimize the long‐run average total cost in the system. This paper studies the cost effectiveness of (R, Q) policies in the above system. Under an (R, Q) policy, each facility orders a fixed quantity Q from its supplier every time its inventory position reaches a reorder point R. It is shown that (R, Q) policies are at least 76% effective. Numerical examples are provided to further illustrate the cost effectiveness of (R, Q) policies. © 2000 John Wiley & Sons, Inc. Naval Research Logistics 47: 422–439, 2000     

Optimal policies for M/M/m queue with two different kinds of (N,T)‐policies

In this paper, two different kinds of (N, T)‐policies for an M/M/m queueing system are studied. The system operates only intermittently and is shut down when no customers are present any more. A fixed setup cost of K > 0 is incurred each time the system is reopened. Also, a holding cost of h > 0 per unit time is incurred for each customer present. The two (N, T)‐policies studied for this queueing system with cost structures are as follows: (1) The system is reactivated as soon as N customers are present or the waiting time of the leading customer reaches a predefined time T, and (2) the system is reactivated as soon as N customers are present or the time units after the end of the last busy period reaches a predefined time T. The equations satisfied by the optimal policy (N*, T*) for minimizing the long‐run average cost per unit time in both cases are obtained. Particularly, we obtain the explicit optimal joint policy (N*, T*) and optimal objective value for the case of a single server, the explicit optimal policy N* and optimal objective value for the case of multiple servers when only predefined customers number N is measured, and the explicit optimal policy T* and optimal objective value for the case of multiple servers when only predefined time units T is measured, respectively. These results partly extend (1) the classic N or T policy to a more practical (N, T)‐policy and (2) the conclusions obtained for single server system to a system consisting of m (m ≥ 1) servers. © 2000 John Wiley & Sons, Inc. Naval Research Logistics 47: 240–258, 2000     

固定翼反潜巡逻机作战效能评估

运用改进的Topsis评估模型对反潜巡逻机的作战效能进行评估,主要是对指标权重的计算方法进行改进:综合考虑客观熵权和专家主观权重得到综合权重,通过客观的熵权信息来调整主观权重的偏差,使得反潜巡逻机作战效能的评价结果更为合理。实例分析表明,该方法能够主客观相结合,简单有效,具有一定的推广应用价值。     

基于 ∆TOA 和方位角测量辅以间歇高度信息的双基地定位跟踪技术

本文讨论了双基地雷达系统中一种以收站△TOA和方位角测量为基础并辅以发射站传送的间歇高度信息的运动目标三维定位跟踪算法,详细分析了该技术的定位原理。在电子对抗条件下,发射站数据往往难以连续传送到接收站加以融合,因此有必要对间断传送的数据加以利用的方法进行研究。本文通过典型目标航迹的计算机仿真对该算法的性能做了评估。由于这种融合方法在双基地研究领域尚属初探,因此有待于在今后的研究中加以完善。     

基于Digital UNIX平台的实时数字引导实现方法

根据导弹飞行试验任务中对测控设备进行数字引导的实际需求,介绍了数字引导在飞行试验任务中的作用和基于Digital UNIX平台实现对测控设备数字引导的原理,从确保数字引导实时性、引导数据可靠性、引导外推点确定及修正引导方法四个方面介绍实现数字引导的关键技术,为导弹飞行试验任务中确保测量设备及时捕获和跟踪目标,成功地实现数字引导提供了实用的实现方法。     

应用于引信遥控装定的火控信息交联装置

自差式多普勒无线电引信发射和接收装置是引信遥控装定的重要内容.在装置中引入单片机和FPGA技术,能快速、准确的装定已经出炮口300 ms以上的密集弹药,选择工作方式,可供选择的工作方式有近炸、碰炸、遥控炸、定时(距)炸.引信具备近目标发射电磁波功能,能有效抗有源干扰、海杂波干扰和信道干扰.FPGA的高度集成特性减小了编码和解码、调制与解调电路的体积,减小了引信工作电路.     

防空体系中的光电对抗技术

为了有效对抗精确制导武器,在防空体系中大力发展光电对抗技术具有十分重要的意义。简述了防空体系中可以采用的几种光电对抗技术。