Results 21 to 30 of about 3,858,255 (287)
Method of calibrating modulation meter MI 2305
Vojnotehnički Glasnik, 2000 In this article an original way of calibrating the MI 2305 modulation meter is described. AM traceability is achieved using tree secondary etalons. FM traceability calibrating is achieved by using the Bessel zero method.
Milovan Unković
doaj +1 more source
Frequency modulated microrheology
Lab on a Chip, 2015 Coupling analog frequency modulation (FM) to the driving stimulus in active microrheology measurements conducted with optical tweezers effectively parallelizes numerous single-frequency experiments.
Matthew M, Shindel, Eric M, Furst
openaire +3 more sources
A New Method to Verify the Measurement Speed and Accuracy of Frequency Modulated Interferometers
Applied Sciences, 2021 The measurement speed and measurement accuracy of a displacement measuring interferometer are key parameters. To verify these parameters, a fast and high-accuracy motion is required.
Toan-Thang Vu +4 more
doaj +1 more source
Comparative Analysis of Mathematical Models of Tracking Radio Altimeters
Известия высших учебных заведений России: Радиоэлектроника, 2022 Introduction. Tracking radio altimeters of low altitudes are widely used in civil aviation. These devises use periodic frequency modulated continuous wave (FMCW) signals, while altitude measurements are based on processing the beat signal processing. For
A. A. Monakov, A. A. Tarasenkov
doaj +1 more source
External cavity diode lasers and non-linear optical frequency conversion in spectroscopic applications [PDF]
, 2006 Semiconductor diode lasers are successful tools in atomic spectroscopy. They are routinely used in frequency conversion applications to develop devices that access regions of the spectrum not directly available.
Shah, Anjali
core +2 more sources
Applied Sciences, 2022 The rub-impact fault, which occurs in the aeroengine, can cause frequency modulation (FM) in its vibration signal. Oscillated instantaneous frequency (IF) is a phenomenon of such a modulation mode, which carries critical fault information from the ...
Peng Zhang +7 more
doaj +1 more source
Micromachines, 2023 In this paper, we introduce a low-cost, expansible, and compatible measurement and control system for atomic force microscopes (AFM) based on a quartz tuning fork (QTF) self-sensing probe and frequency modulation, which is mainly composed of an embedded ...
Yongzhen Luo +4 more
doaj +1 more source
Extremely low frequency based communication link [PDF]
, 2009 The paper discusses the literature review and the possibility of using the ground itself as transmission medium for various users’ transceivers and an administrator transceiver using Multi-Carrier-Direct Sequence-Code Division Multiple Access (MC-DS-CDMA)
Holmes, Violeta +3 more
core +4 more sources
Diance yu yibiaoIn order to further improve the economic benefits of pumped storage power stations participating in the electricity market, an intra-day real-time optimal scheduling method for pumped storage power stations based on the evaluation of electricity energy ...
ZHAO Zengtao +4 more
doaj +1 more source
Modeling and Analysis of Microwave Emission from Multiscale Soil Surfaces Using AIEM Model
Remote Sensing, 2022 Natural rough surfaces have inherent multiscale roughness. This article presents the modeling and analysis of microwave emission from a multiscale soil surface.
Ying Yang, Kun-Shan Chen, Rui Jiang
doaj +1 more source