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通用图像显示控制技术的任务是完成信息管理与显示。本文分析了原有设备的不足之处 ,提出了新型显示控制台的功能与技术指标及其系统结构 ,重点对视频带宽和隔离度展开了详细地讨论 ,最后对新一代图象显示技术的研究目标进行了预测 相似文献
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Luca Pieroni 《Defence and Peace Economics》2013,24(4):327-339
This paper tests the relationship between military expenditure and economic growth by including the impact of the share of military and civilian components of government expenditure in an economic growth model with endogenous technology. In this framework, we empirically consider the hypothesis of a non‐linear effect of military expenditure on economic growth. Differences between the costs and benefits of the defence sector has traditionally explained the non‐linear relationship suggesting that shocks to insecurity may also be a source of non‐linearity as they determine a re‐allocative effect within government expenditure. While parametric partial correlations are in line with empirical findings, the robustness of estimations is tested by using a non‐parametric approach. The negative relationship between military expenditure and growth in countries with high levels of military burden predicted by theory becomes significant only after including a proxy for re‐allocative effects in the growth equation. 相似文献
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采用 3DStudioMAX对航母进行三角面元逼近模拟 ,并用面元法研究计算了航母在X波段的雷达反射特性 ,给出了航母雷达散射截面 (RCS)随方位的分布图。从图中可以看出 ,航母的RCS峰值出现在船头、船尾和两舷四个方向 ,这说明航母的雷达回波主要来自于镜面反射。 相似文献
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针对跳频组网通信中不同信号间的时频分隔特点,利用时频重心进行目标方位数据关联,提出了空时频方位关联算法。根据提取的时频特征设计空时频测向的核函数,实现了简化的空时频测向算法。根据时频距离设计代价函数,基于匈牙利算法实现了方位关联结果的搜素。根据时频距离选择窗函数的类型和长度,有效避免了信号旁瓣泄露对测向精度的影响,显著提高了密集目标条件下的关联正确概率。数值仿真验证了上述观点。 相似文献
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