The parameter that an accelerometer measures (dv/dt). Single integration of the acceleration signal will produce a velocity display and double integration of the acceleration signal will produce a displacement display.Ī change in the velocity of a body particle with respect to time. This current is then amplified and displayed as a time waveform or processed by a Fourier transform to produce a frequency display. The output is usually produced by force applied to a piezoelectric crystal which generates a current proportional to the applied force. A sensor or transducer (See Piezoelectric Accelerometer, Charge Mode Accelerometer, Triaxial Accelerometer) whose output is directly proportional to acceleration forces. Also known as inertance.Ī device which is used to measure acceleration. The frequency response function of acceleration/force. The Tool is built by the Proposal and Observing Preparation System team within the ALMA Computing IPT.Vibration Terminology Reference Guide Term The Observing Tool is the software tool that will be used for the preparation of ALMA Observing Projects. This web application was adapted from the ALMA Sensitivity Calculator in the ALMA Observing Tool by Mark Nicol. We are particularly interested to hear about any undesirable behaviour and bugs as well as any improvements that you would like to see. Choosing the unit "Kelvin" will cause the ASC to use surface brightness units and will thus require that an angular resolution be entered.Īny questions about the ASC should be addressed to the Helpdesk (registration required).
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