排序方式: 共有76条查询结果,搜索用时 15 毫秒
51.
52.
53.
针对装备保障指挥信息传输过程中存在的效率不高、传输不畅等问题,以数字化部队通信手段为基础,提出了装备保障指挥数据链的构造方案,并对未来数字化部队装备保障指挥数据链进行了具体设计,通过弹药补给命令的实例进行了说明。结果表明:采用数据链进行信息传输明显减少了数据传输量,提高了传输效率。 相似文献
54.
55.
基于MIMO的信号检测技术在宽带数据链中的应用 总被引:2,自引:1,他引:1
分析了多输入多输出系统中空分复用和空时分组码的解码算法,提出了一种空分复用和空时分组码相结合的方案,探讨了这种方案的解码算法并对该算法进行了仿真验证.结果表明,这种方案的BER性能在高信噪比时要好于其它方案,因而可以应用到需要高传输速率以及高链路可靠性的宽带数据链中. 相似文献
56.
为识别链路层加密比特流,以未加密与加密数据在随机统计特性上的差异为依据,对4种典型的随机性检测方法在比特流长度不同时的识别率进行了比较研究.针对块内最长游程检测过程中出现的比特流尾部比特位不能构成完整子块的问题,提出了2种可行的处理方案.通过对块内最长游程检测门限值函数的研究,基于参数优化的方法改进了块内最长游程的检测方案,在一定程度上提高了识别率.最后,以某无线网络链路层加密比特流为识别对象,对提出方案的有效性进行了验证. 相似文献
57.
UGURHAN G. BERKOK † 《Defence and Peace Economics》2013,24(3):191-204
The choice between balanced and specialized defence forces depends on the technology of defence output (e.g. whether a force scope multiplier is present), the existence of scope and scale economies, the platform customization costs and, of course, the level of defence budgets. Minimum force element levels (thresholds), and scale economies facilitate specialization as opposed to scope economies (e.g. platform‐sharing), scale diseconomies and the force scope multiplier (e.g. defence weakest‐link technology). When a balanced force is not optimal, the option value of a non‐optimally maintained force element must also include the opportunity cost arising from suboptimal force elements. Shrinking defence budgets may produce two surprising phenomena. If some force elements are shut down as a result of thresholds, the surviving ones may increase in platform numbers as well as enjoying closer‐to‐most‐desirable platforms. Furthermore, if heritage force elements are shut down within the budget contraction environment, overall defence capability might rise. 相似文献
58.
59.
60.