The background count of the detector is 4~ 6 counts 1 min. 探测器的本底计数率为4―6脉冲1分。
The study presented here is the first step in a program aimed at reducing significantly the background count rate of NaI scintillation units. 这里程序第一步的学习是为了显著的减少非地址指令传送单元的暗中统计率。
Its process includes image pretreatment and drone tracking, image decomposition based on multilayer wavelet, sub-images matching based on block, counterbalance the moving vector of the whole background and shot-trace detecting and space coordinate count. 其实现步骤包括:图像预处理-靶标定位跟踪、原始图像小波多层分解、低频图像块匹配、背景图像运动补偿及射弹检测与空间坐标推断。
Within the fixed time, when a ratio of measured time for radioactive sample to background equals the ratio of square root of radioactive count for radioactive sample to background, there are minimal measure errors. 在规定的时间内,测量样品放射性的时间和测量本底的时间之比等于放射性总计数和本底计数率之比的平方根时,测量结果的误差为最小。
It has been shown that the intrinsic radioactive background of the apparatus is 0. 002 cpm/ cm2 ( 2 count/ min). 实验表明,计数器固有本底为0.002计数/(min·Cm~2)(2计数/min)。
Because of the complexity of the 2-D image background captured with a surveillance camera, general methods applied to deal with a moving luminous object in dark background will induce a count error for objects. Therefore, a method being called synthetic shape detection is described. 采用通常方法处理暗背景下运动发光目标,因监测摄像机所拍摄二维图像背景的复杂性,导致对目标数量统计的误差,为此,提出了综合形状检测法。
Radiation monitoring equipment give alarm signal according to the radiation intensity; monitoring the current count and the background average count, and gives a warning signal when the difference between the two over a certain range. 放射性监控仪器一般是根据辐射场强度变化量的大小给出报警信号,通常将探测器当前计数与本底平均计数进行比较,当两者的差值超过一定的范围,就给出警示信号。
With the development of the business and the improvement of the volume of business, the current terminal background system of our company count no longer be satisfied with the product management and the Business expansion. 随着业务的不断扩展,终端交易量的提高,我公司现有的自助终端交易系统已经逐渐不能满足生产运营和业务扩展的需要。
This paper adopted the traffic scene during the background which used to detect the vehicles, and count the vehicles by setting the virtual coil. 其中,对白天的交通场景采取背景差法监测道路车流,通过设置虚拟线圈对车辆进行计数。