1) false alarm probability
虚警概率
1.
In order to get lower false alarm probability and higher detection probability, the genetic algorithm (GA) is applied to solve this multipurpose optimal problem which has three parameters: the numbers of C/A code periods and navigation data bits which are used for integral, and the acquisition threshold.
研究了微弱GPS信号的捕获问题,以捕获时较低的虚警概率和较高的检测概率为目标,以累加时的粗捕获(C/A)码周期数和导航数据数,以及捕获门限等参数为决策变量,应用遗传算法(GA)来解决这一多目标优化问题。
2.
Thus,the closed-form expression of the detection probability and false alarm probability of the system can be derived under some interf.
对于多用户干扰,当干扰用户多时,根据中心极限定理,检测器输出端的多用户干扰可近似为一个高斯随机变量,推导了一定干扰用户下系统检测概率和虚警概率的闭合表达式,在给定的信噪比和一定的捕获门限下,求出捕获时间的均值和方差。
3.
Under condition of meteorological clutter,how to exploit the outline clutter map and the dynamic clutter map to reduce the false alarm probability and improve detection performance of radar is discussed,and processing the border problem of meteorological clutter is analyzed,finally the complete clutter map is realized by using FPGA.
探讨在气象杂波环境下,利用轮廓杂波图和动态杂波图降低虚警概率及提高雷达的检测性能,分析气象杂波边缘问题的处理,最后通过FPGA实现了整个杂波图。
2) probability of false alarm
虚警概率
1.
By this method the probability of false alarm P_(fa) is greatly reduced and the minimum de.
此外,该方法还可以大大降低系统的虚警概率并用仿真研究了最小可检测速度。
2.
The results show that the probability of false alarm would increase quickly along with the jamming power while the probability of detection increase a little if it exceed the certain value.
本文从对GPS信号的结构出发 ,在单频、宽带及部分频带干扰模式下 ,分析了GPS接收机C/A码捕获过程的检测概率和虚警概率等性能指标。
3.
Then the paper makes a discussion on how to decrease the probability of false alarm and probability of false rejection.
论文从水印检测过程中可能发生的两类错误入手,讨论了降低检测虚警概率和漏报概率的一般方法。
3) false-alarm probability
虚警概率
1.
The STAP detector based on maximum SINR is proposed in this paper,Via setting the hypothesis test reasonable,deduces the statistic characteristic,and the relationship between detection threshold and false-alarm probability and detection probability.
文中基于最大输出SINR准则构建了STAP检测器,通过对假设检验关系的合理设置,推导出了检验量的统计特性,并得出了虚警概率和检测概率与检测门限的关系,以及在给定虚警概率条件下的判决门限。
2.
This paper proposes the STAP detector based on likelihood ratio rule,through the signal model and the likelihood ratio test,deduces the statistic characteristic,and the relationship between detection threshold and false-alarm probability and detection probability.
基于STAP雷达的信号模型,通过对似然比检验量的推导,得到了似然比检验关系,在此基础上构建了STAP检测器,并在高斯噪声输入的假设下,得出了虚警概率和检测概率与检测门限的关系,以及在给定虚警概率条件下的判决门限。
3.
Figures of false-alarm probability versus E_c/N_o and figures of detection-probability versus E_c/N_o on AWGN condition are presented.
在包交换同步码分多址 (P- SCDMA:Packet- Switch- Synchronious Code Division Multpiple Access)系统的扩频序列的捕捉方案基础上 ,建立了信号模型并运用 m序列部分相关的统计结论从理论上对捕捉系统的参数进行了分析 ,给出了在 AWGN环境下虚警概率对 EC/N0 、检测概率对 EC/N0 的图像。
4) false alarm rate
虚警概率
1.
To resolve the problem of the high false alarm rate in SAR-ATI,an improved method was proposed based on the MTI of the joint amplitude-phase threshold.
针对SAR-ATI检测时虚警概率过高问题,基于幅度门限和相位门限联合动目标检测处理,提出了一种改进方法:首先对SAR每一个通道的图像域中相位被污染的点作一次关于能量梯度的预滤波,在滤除了干涉相位图中相位失效的点之后,根据雷达的固有噪声及干涉相位分布图,在概率意义下设定滤波门限进行自适应幅度滤波;最后采用相位门限进行检测处理,有效降低了虚警概率;同时给出一个由干涉相位图中统计量拟合出的动目标检测曲线经验公式,能够明显降低在低杂噪比条件下的虚警概率。
2.
The aim of this paper is to present a novel threshold setting algorithm by which both the false alarm rate and the probability of detection could be kept constant in a range while the SNR of received signals varies.
针对GPS接收机中的信号捕获问题提出了一种新颖的判决门限的自适应设定方法,它在接收信号的信噪比大幅度变化的情况下也可同时保证捕获的虚警概率和检测概率在一定范围内稳定不变。
3.
Based on analysis of the statistical models of signal and noise, these formulae of detection probability and false alarm rate of four systems are presented, which can be used in the design of specific electro-optic detection.
在分析各系统的信号与噪声统计模型基础上 ,给出了各模型的探测概率和虚警概率计算公式 ,可用于光电探测设备的设
5) false-alarm rate
虚警概率
1.
It introduces the apply of importance sampling on radar false-alarm rate on singularity event-radar false alarm.
以稀有事件—雷达虚警为例,介绍重要采样法在雷达虚警概率模拟中的应用,比较二进制滑窗积累器和四进制积累器的虚警概率性能,证明重要采样法在时间费用上的优势。
6) CFAR
恒虚警概率
1.
Based on CFAR,an adaptive double-dwell acquisition method for DSSS system and its principle block diagram are introduced.
基于恒虚警概率算法提出了一种自适应双驻留直接序列扩频的伪随机码(PN)捕获方法,给出了其原理框图,分析了其在加性高斯白噪声信道和瑞利衰落信道下的捕获性能。
补充资料：虚警
1.戒惧﹐惊惧。
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