The primary purpose of this standard is to describe the tools and methods to measure the technical imaging performance of a particular millimeter wave screening system through its life cycle. These tools and methods address aspects of image quality considered to be relevant to threat detection. In ...
All Special IssuesSensors in 202410 Years Sensors - A Decade of Publishing800 Years of Research at Padova UniversityAcoustic Wave Resonator-Based SensorsAcoustic Waveguide SensorsAdaptive SensingAdvanced Sensors in AgricultureAdvances in Artificial Intelligence: Selected Papers from MICAI 2013, 2014 and 2015...
aThe simplest case is a sine wave. In order to sample a sine wave of frequency f properly, we must gather data at a frequency of at least 2f. A common interpretation is that this enables proper sampling of the wave by enabling the measuring device to observe one wave and one trough 正...
systems that use a wide rangeoffrequencies(ionosondes) for monitoring the state of the ionosphere; equipment forthemeasurementofionizing radiation; a system to monitor magnetic and wave activity; adual-frequencytransmitter of radio signals at frequencies of 150 ...
A、Generate interrupt signal regularly 产生周期性的中断信号 B、Measuring the frequency of external periodic signals 测量外部周期信号的频率 C、Generate periodic pulse signals 产生周期性脉冲信号 D、Generate periodic sine wave 产生周期性正弦波 点击查看答案&解析 ...
maximum values have been change from their defaults to 700 and 15,000 Hz, in order to have fine control over the search for the resonant frequency.This technique will work with any sine wave generator that covers the required frequency range, and oscil- loscope that is capable of XY plots...
17.continuous wave distance finder等幅波[连续波]测距器 18.thermistor-bolometer detector热敏电阻测幅射热仪 相关短句/例句 Frequency characteristic testing幅频测试 3)amplitude-comprised direction-finding比幅测向 1.A full analysis of theamplitude-comprised direction-findingsystem is given.对比幅测向体制进行了...
Ocean Wave Directional Spectra Estimation from an HF Ocean Radar with a Single Antenna Array: Methodology. A method to estimate ocean wave directional spectra using a high-frequency (HF) ocean radar was developed. The governing equations of wave spectra are inte... Hisaki,Yukiharu - 《Journal ...
As discussed in part one of this article, the measurement of very good VCOs at large frequency offsets is limited by the spectrum analyzer’s dynamic range. This limitation can be overcome by using carrier filtering and selective amplification of noise a
An auto ranging system for causing an instrument for determining the frequency of a wave to be in a frequency mode or a period mode in response to the digits of the frequency of the wave determined in a trial interval is described. The cycles of the wave during which the cycles of an ...