1) single-photon acquisition probability
单光子捕获概率
1.
The expressions of single-photon acquisition probability in free-space quantum key distribution were deduced based on TEM10 mode Laguerre-Gaussian beams.
基于TEM10模拉盖尔-高斯光束,推导自由空间量子密钥分配中单光子捕获概率表达式。
2.
Single-photon acquisition probability is deduced from TEM_ 10 and TEM_ 01 mode Hermite-Gaussian beams of optical electromagnetic field equation.
从光波电磁场方程的TEM10和TEM01模厄米高斯光束出发,推导了自由空间量子密钥分配的单光子捕获概率表达式。
3.
In this paper,based on intersatellite optical communications, single-photon acquisition probability in satellite-ground quantum optical communication is studied.
对于单光子捕获,一个重要问题就是单光子捕获概率问题。
2) single-photon acquisition
单光子捕获
1.
The expressions of single-photon acquisition probability in free-space quantum key distribution were deduced based on TEM10 mode Laguerre-Gaussian beams.
基于TEM10模拉盖尔-高斯光束,推导自由空间量子密钥分配中单光子捕获概率表达式。
2.
Single-photon acquisition is analyzed for the links between a ground station and a satellite in a low earth orbit.
基于TEM10模拉盖尔-高斯光束,推导了自由空间量子密钥分配的单光子捕获概率表达式,分析了低轨卫星-地面站间链路的单光子捕获问题。
3) acquisition probability
捕获概率
1.
Aiming at the diversification of function system and homing modes in the development of submarine-launched torpedo,this paper analyses the advantages in operational application of wake homing torpedo based on its mechanism,such as stronger counter-countermeasure,higher speed,and higher target acquisition probability for selected target.
针对国内外潜射鱼雷在功能体制和制导方式等技术环节多元化发展的局面,基于尾流自导鱼雷制导原理,分析了尾流自导鱼雷在作战使用上的技术优势:抗干扰能力强,适宜高速制,可选择攻击目标和捕获概率高;以及其战术局限性:可攻目标的类型及速度受限,鱼雷航程损失大,与线导结合困难,对机动目标攻击效果较差。
2.
Under a certain satellite and acquisition probability,the total scan field of the acquisition system will be the minimum during the foundation of links if the scan fields of the single scan of two terminals are equal.
在一定的卫星平台性能条件和捕获概率要求下,当2个终端的单场扫描范围相等时,链路建立过程中捕获系统总的扫描范围最小。
3.
According to the reception principles of GPS receiver, the acquisition probability of GPS receiver to repeater deception jamming is derived in this article, and the probability curves of GPS receiver receiving repeater deception jamming as well as GPS satellite signal is obtained by simulation.
根据GPS接收机对GPS信号的捕获原理,推导出GPS接收机对转发式欺骗干扰的捕获概率,通过仿真得到了典型条件下GPS接收机对转发式欺骗干扰和GPS卫星信号的捕获概率曲线,表明转发式干扰机只需有较小的转发增益, GPS接收机对转发式欺骗干扰即有更高的捕获概率。
4) Capture probability
捕获概率
1.
Deduce the FB formula for TSM, combined with the idiographic rule, a kind of mathematical model for capture probability is established, and the relationship between capture probability and scan parameter is analyzed, including the low speed scan and the high speed scan.
本文研究工作主要包括下述方面内容： 推导了末敏子弹占空比的计算公式，并结合具体的捕获准则，建立了捕获概率数学模型，分别分析了高、低速扫描条件下的捕获概率与扫描参数的关系，研究了最佳捕获准则的确定。
2.
The simulation results show that this method has the feature of short synchronization time,high capture probability,low false probability and high anti-jamming performance.
仿真结果表明,该跳频同步方案具有同步时间短,捕获概率高,虚警概率低和抗干扰能力强的特点。
5) target acquisition probability
目标捕获概率
1.
The mutual-guiding probability and target acquisition probability are calculated by Monte-Carlo method under different base course distance between two torpedoes,and the influence of different error distributions of target course and velocity on the target acquisition probability i.
采用蒙特卡罗法仿真计算了在不同主航向间距下的齐射双雷互导概率和目标捕获概率,计算了不同的目标航向和航速误差分布对单雷和双雷攻击目标捕获概率的影响。
2.
Also,the cause of the target acquisition probability reduction is discussed in detail.
文中以投弹篮框干扰为例分析了导引头捕获目标的机理,并且详细研究了目标捕获概率降低的原因。
6) position acquisition probability
位置捕获概率
1.
According to the design of target capture parameters of terminal guidance radar, the whole and the once position acquisition probability are estimated by using Monte-Carlo method.
根据导弹末制导雷达搜捕参数的设计,采用蒙特卡洛法估算了每种设计状态下末制导雷达对目标的全程位置捕获概率及一次捕获概率,同时对所有统计试验的计算结果进行了精度评定。
补充资料：单、双光子吸收法
单、双光子吸收法
SPA采用单一波长的γ射线125碘或241镅为发射源，计算其经过被测物后衰减率，再经一已知标准将其衰减值转换为骨矿含量或骨密度。通常只对四肢骨骼(如桡骨、尺骨)进行测量，并且主要测量皮质骨。为校正软组织产生的变异，测量时受检部位置于与软组织等当量的水袋中，采用多次扫描并取其均数，再除以受检骨的宽度，得骨的面密度，骨密度单位是g/cm2，其准确性约为6%，精确性在1%～2%，辐射剂量较小，通常低于10mRem(毫雷姆)。双光子吸收法(DPA)采用能发射两种不同能量光子的核素作放射源，利用高能和低能射线通过被测部位的不同衰减分布来计算骨的能量衰减分布，故可用来测量一些软组织变异大的部位如脊椎、髋等全身部位的骨矿含量，从而消除软组织及脊髓对测量结果的影响。DPA通常测量L1～L4的骨矿含量，结果以骨矿密度g/cm2表示。且辐射剂量较低，3～5μSv(4～6)。缺点为检查时间较长，并且DPA的测量是射线所经通路的衰减值的总和，无法区分皮质骨和松质骨的骨密度，另外，全身的骨矿含量的测量还受椎体边缘骨赘、椎体小关节肥大、压缩性骨折和钙化血管的影响。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条