pulse-doppler Articles

  • On the right track

    High-speed train manufacturer, CAF, rely on world-class beamforming technology to reduce the noise generated by their trains – helping to make high-speed trains a more viable option for travellers and operators alike. Because of its relatively low levels of CO2 emissions, train travel is considered one of the ...

  • Why calibrate PULSE?

    This famous remark emphasises the importance of measurement in the world of science, industry and commerce. We all use and depend on it daily, in even the most mundane aspects of life – from setting your wristwatch to the radio time signal, to filling the car fuel-tank, or checking the weather forecast. All of these things depend on proper calibration and traceability to national and ...

  • PULSE makes explosive readings

    About Kockums AB The Danes haven’t always been on the best of terms with their neighbours in Sweden! The late1600s were troubled times in the Baltic. Having conquered the provinces of Skåne, Blekinge and Halland from Denmark, the then Swedish King Karl XI realised that he needed a naval base in the south of Sweden to defend these new acquisitions. Therefore, Karlskrona was ...

  • A brief statement of airport applications for doppler SODAR systems

    Doppler SODAR Operating similar to a sonar the Doppler SODAR (Sonic Detection and Ranging) directly measures the atmospheric wind speed and direction at multiple altitudes simultaneously. These systems utilize the Doppler effect imposed on the received acoustic signal echoed by the atmosphere for the wind measurements. The Doppler effect is the common observation that the acoustic signal ...

  • Measuring the Dispersion Coefficient with Acoustic Doppler Current Profilers

    Abstract: A method is evaluated for estimating the longitudinal dispersion coefficient K from velocities and bathymetry measured with an acoustic Doppler current profiler #1;ADCP. If shear dispersion controls the mixing, the dispersion coefficient can be estimated from measurements of velocity and depth in a cross section. The dispersion coefficient has typically been measured by costly and ...


    By Teledyne RD Instruments

  • Ishibashi tests wind gearboxes with PULSE

    Japan’s largest wind turbine gearbox manufacturer Ishibashi faces a familiar challenge in manufacturing wind turbine gearboxes - ensuring the reliability and longevity that is critical to their customer’s return on investment. At the core of Ishibashi’s testing procedure is Brüel & Kjær’s PULSE analyzer and - following the acquisition of their first system ...

  • PULSE smart start – a user’s experience

    Measuring on a Grounded Aeroplane   In the early days of PULSE, a team from Brüel & Kjær had the opportunity of performing a ground test on a Boeing 767. The left engine of the aeroplane had undergone a scheduled overhaul. The engine was reassembled and verified in a test cell. Everything seemed fine. The engine was mounted on the aeroplane and the aeroplane was ...

  • Online discharge measurement with horizontal doppler-flow sensor

    Background The regional authority responsible for the barrages in the Free State of Saxony is in charge of the water management of the Rötha. Reservoir. This reservoir is situated close to the river Pleiße, from which the water is led over a weir into the reservoir.. Knowledge about the inflows of the reservoir is important for the water management there. So far, the ...

  • FlowShark Pulse Exceeds Stringent Operations Requirements for Accuracy

    Camp Pendleton, CA - The Camp Pendleton Marine Corps Base in northern San Diego County commissioned its new wastewater treatment plant in mid-2006. This new plant will consolidate flows from the other three treatment plants on the base over a period of about three years. The new plant’s headworks configuration made continuous metering of total influent flows to the plant difficult. Therefore, the ...

  • Pulse Shapes from Ground Penetrating Radar

    A number of technical reports have discussed the use of ground penetrating radar equipment in examining highway structures for deterioration. Several of these reports provide expressions or calculational techniques that purport to describe the shape of the radar pulse returning from voids within the structure, such as the thin air gap at a delamination within a concrete bridge deck or the larger ...


    By ASTM International

  • Pulse-Power Water Treatment Systems for Cooling Towers

    Untitled Document Introduction “Pay me now or pay me later…” It’s ...


    By Dolphin WaterCare

  • Treatment of emulsified oils by electrocoagulation: pulsed voltage applications

    The effect of pulsed voltage application on energy consumption during electrocoagulation was investigated. Three voltage profiles having the same arithmetic average with respect to time were applied to the electrodes. The specific energy consumption for these profiles were evaluated and analyzed together with oil removal efficiencies. The effects of applied voltages, electrode materials, ...


    By IWA Publishing

  • Estimating longitudinal dispersion in rivers using Acoustic Doppler Current Profilers

    Abstract The longitudinal dispersion coefficient (D) is an important parameter needed to describe the transport of solutes in rivers and streams. The dispersion coefficient is generally estimated from tracer studies but the method can be expensive and time consuming, especially for large rivers. A number of empirical relations are available to estimate the dispersion coefficient; however, ...


    By Teledyne RD Instruments

  • Laser Doppler vibrometer for mode shape and power flow analysis in coupled structures

    In this paper, an experimental technique is introduced to investigate the structural response under impact loads, which consists of the waveform measuring technique in the time domain by using the WAVEVIEW software, and steady-state measurements by using the Polytec Laser Scanning Vibrometer (PLSV) in the frequency domain. The waveform measuring technique is introduced to obtain the waveform at ...


    By Inderscience Publishers

  • DFM 5.0 doppler flow meter for frac sand slurry flow monitoring

    CanFrac Sands Ltd. of Lloydmister Saskatchewan (Canada) needed a flowmeter that could accurately measure sand slurry flow without being damaged by this highly abrasive product. They selected the Greyline DFM 5.0 Doppler Flow Meter with a clamp-on ultrasonic sensor mounted on the outside of a pipe. CanFrac produce “fracturing sand” used by the oil and gas industry. This special type of ...


    By Greyline Instruments Inc.

  • A DC-pulse power supply for plasma applications

    A DC-pulse power supply designed for plasma applications is presented in this paper. It consists of an H-bridge switching circuits and two DC sources. All pulse parameter values are set in a control panel developed with LabVIEW software. The designed panel adopts RS232 protocol to sequentially transmit the set parameter values to a low-cost 8-bit microcontroller, AT89C51. The microcontroller ...


    By Inderscience Publishers

  • Condensed Water Treatment Using Pulsed Power

    Introduction Regulatory pressures and economic considerations require industry to become cleaner, more efficient, and more environmentally benign. Such operating principles advance not only good public relations but reduce liability, improve working conditions, and relieve or simplify regulatory reporting obligations. One area where an environmentally friendly technology has been ...


    By Dolphin WaterCare

  • FlowShark Pulse Provides Accurate Influent Data Reporting

    Oahu, HI - The Hawaiian Islands’ topography lends itself to multiple small treatment plants. The island of Oahu containsmore than 80% of the entire island chain’s population. The Sandy Beach treatment plant on the eastern end of Oahu has been in operation since 1965 and currently operates at an average daily flow of about 4 mgd. The plant’s influent flows are highly irregular with a large ...

  • Modelling of sediment nutrient fluxes for a pulsed organic load

    A sediment model has been developed to simulate the Sediment Oxygen Demand (SOD) and sediment nutrient fluxes after a sudden input of Particulate Organic Matter (POM). Compared with previous sediment models, the main advances are the use of a continuous function to represent the kinetics of POM diagenesis and inclusion of the biomass content in POM diagenesis. Laboratory experiments were also ...


    By Inderscience Publishers

  • Hansen transmissions - wind turbine gearbox testing with PULSE

    The Wind Energy Market Wind energy is one of the fastest growing power generation technologies. The level of annual installed capacity has grown at an average rate of 27.6% p.a. for the past five years. High fuel prices and increased focus on global warming and renewable energy resources have contrib- uted to an increased investment in the development of wind technology over the last three ...

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