1.In this paper,the author study performance of IEEE 802.15.4 protocol in mobile condition,then simulate and analyze network-topology support for mobile node in Beacon and Non-Beacon of IEEE 802.15.4. Finally this paper provides an effective way for present problems.
研究并分析了IEEE 802.15.4协议在移动环境下的性能,仿真并分析了IEEE 802.15.4的Beacon和非Beacon两种不同的网络拓扑对移动节点的支持程度,针对存在的问题,提出了进一步改进的意见。
2.By storing a beacon image in aircraft as reference and regarding actual beacon image as the sum of reference image and additive Gaussian white noise,the values of rotation and translation for beacon image were calculated according to phase correlation and DFT(Discrete Fourier Transfer).
该方法的原理是在航天器上存储一幅信标图像作为参考,把实际信标图像看成参考信标图像和附加高斯白噪声和的形式,基于离散傅里叶变换和相位相关技术对信标的旋转因子和平移因子进行计算。
3.Besides the error introduced in phaseestimation phase, we mainly discussed how beacon layout affect positioning accuracy. The definition and calculate method of DOP is introduced, and many simulationresults on HDOP distribution of various beacon layout are given.
除由于相位估计部分引起的误差之外,本文着重分析了基站布局对定位误差的影响,介绍了几何布局与精度因子DOP的计算方法,并通过仿真结果说明了DOP的意义,最后针对多种基站布局方案作了仿真,得到了HDOP的分布图,提出了一种实际可以应用的布局方案。
4.The detecting node also has all keying materials related to this ID so that it can communicate securely with other beacon nodes as a non-beacon node.
发现节点也有与这一个名称有关的所有的按键事物以便它能安全地与如一个非指标节点的其他指标节点沟通.
5.This machine adopts a cold plank packing, temperature means that the needle automatically control, heat or reduce the heat to all have a signal beacon manifestation, the electric current electric voltage size switches on to all have a manifestation and automatically feed powder is certainly and soon, spread to move part is the bean that the my plant produce to product the machine appropriation deceleration machine, the electrical engineering is the steel plate adjustable type, the machine bottom use of upscale run a round, easy to ambulation, heat part is a heat preservation economy energy type, normal production can economy in electricity quantity of 30%, in fact use electricity charges and burn coal basic hold even.
本机采用冷板包装，温度是指针自动控温，加温或降温均有信号灯显示，电流电压大小开机均有显示，自动喂粉是定速，传动部分是本厂生产的豆制品机械专用减速机，电机架是钢板可调型，机器底部用的高档跑轮，便于移动，加温部分是保温节能型，正常生产可节约用电量的30%，其实用电费和烧煤基本持平。
6.It will rise at sunset and loom high at midnight, an orange beacon 15 times as bright as the leading stars of summer.
火星将于黄昏时分升起,在午夜时高挂天空,这颗橘色火球的亮度比夏季天空中最明亮的星星还高出十五倍.
7.The beacon is fluctuated very badly.
导航台摆动得很厉害。
8.a radar beacon
雷达指向标
9.When I was a young man I swam from there round the beacon and landed at the creek of Tarumi.
我年轻的时候，曾经从那里出发，游过灯塔直到垂水小溪上岸。
10.Ideal is the beacon.Without ideal,there is no secure dirction ;without dirction ,there is no life.------Lev Tolstoy.
理想是指路明灯.没有理想,就没有秒年第毫年个的方向;没有方向,就没有生活.------列夫-托尔斯泰.
