A fusion method of slice images of coherency tubes by calculating in the frequency division is put forward.
文章将三维相干技术与小波多尺度分析相结合,利用多尺度相干分析理论,提出了分频计算相干切片图像融合处理方法。
Aiming at high precision and a wide measuring range, the traditional theory of ultrasonic flowmeter is combined with an advanced CPLD high frequency circuit design technology to give a new type of ultrasonic flowmeter with digital AGC, automatic false detection and high frequency counting capability.
利用传统流量计的原理,结合目前先进的可偏程逻辑器件(CPLD)设计和高频电路设计技术,针对高精度、宽量程的要求,设计出具有数字自动增益控制(AGC)系统、自动纠错系统、高频计数系统的新型超声波流量计,它具有主从处理器并行工作结构和多种输出方式,可为多种工业输出标准提供接口。
This paper adopts and develops the method of double counter by multiple period average(DCMPA)for processing radar IF signal.
对雷达中频信号处理 ,文中提出并采用了“双计数器多周期平均倒数测频”(以下简称双频计 )。
The two key problems of BEM, namely singular integral and multi-frequency calculation, are studied in details based on the BEM method, and two valid numerical methods is posted, and sound radiation mode .
本文以边界元方法作为研究结构声辐射的基础,并针对边界元方法中的两个关键问题,奇异积分与多频计算,提出了有效的数值计算方法;在此基础上,对结构声辐射的机理问题进行了研究,提出了一种对复杂结构声辐射模态与灵敏度计算的方法,对复杂结构声辐射的解耦进行了探讨,最后对所提出方法的有效性与可靠性进行了试验验证。
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