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Morse/PSK Reader Specification: Limitations:
Morse/PSK Reader Specification: Limitations:

... Although SSB band width receiver can be used, the use of narrow band receiver filter (such as for CW) will aid in tuning in signals as they peak in the filter and reduce wide band noise. Strong adjacent signals (closer than 60Hz to the center) can cause interference to decoding weak signals No squel ...
f(t) - AAVSO
f(t) - AAVSO

... gaps that have periods all their own ...
SDR equivalents to analog functions in a small-scale radio
SDR equivalents to analog functions in a small-scale radio

... complex (I/Q) representation allows us to disambiguate the sum/difference frequencies when we process the signal mathematically. Consider an input signal a F, with a bandwidth of Bw, when that signal is processed by a directconversion quadrature mixer, the resulting baseband signal occupies a new sp ...
TIRCAM2 (TIFR Near Infrared Imaging Camera - II) @ 3.6m
TIRCAM2 (TIFR Near Infrared Imaging Camera - II) @ 3.6m

... TIRCAM2 (TIFR Near Infrared Imaging Camera - II) @ 3.6m DOT TIRCAM2 (TIFR Near Infrared Imaging Camera - II) is a closed cycle cooled imager that has been developed by the Infrared Astronomy Group at the Tata Institute of Fundamental Research for observations in the near infrared (NIR) band of 1 to ...
HJ3613041308
HJ3613041308

... adaptive filters are used in diverse applications. We use adaptive filters where it is must for the filter characteristics to be variable and adapted to changing condition and when there is a spectral overlap between the signal and noise. Adaptive algorithms are used to modify the coefficients of di ...
Chapter 10 Estimation
Chapter 10 Estimation

... estimate the “true” signal from a measured signal. A typical example is to estimate the signal, Ŝ (t), from a measured noisy signal X(t) = S(t) + N(t), where N(t) is a white noise. (2) The problem of estimation can also be viewed as filtering as it filters out the noise from the signal. (3) In this ...
Neutron Filter
Neutron Filter

... ** The exact values, 150K and 1M reverse log are not readily available. The substitutes listed here will work; however, the “Peak” range is a bit restricted and the 1M is an audio taper, so must be wired and rotated counterclockwise. You can use these values until you can locate the right ones. The ...
Decimator prorackG manual
Decimator prorackG manual

... noise reduction performance. The Decimator ProRackG was designed to provide the maximum possible performance in a rack mount dual channel noise reduction system designed specifically for extremely high gain guitar amplifiers. The Decimator ProRackG offers the only system designed with two channels o ...
Powerpoint template for scientific posters (Swarthmore College)
Powerpoint template for scientific posters (Swarthmore College)

... Over the past decade, research has been active in developing methods for measuring the levels of stress in aquatic animals for the purpose of monitoring water pollution on the basis of Micro-Electro Mechanical Systems (MEMS). This research proposes the design and implementation of a two-phased integ ...
OctoberBest Quick Analog Design Presentation
OctoberBest Quick Analog Design Presentation

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How to do an optimum setup for the MCA527 24.9.2013 Jörg Brutscher
How to do an optimum setup for the MCA527 24.9.2013 Jörg Brutscher

... Optimum shaping time depends on the noise characteristic of the detector and further there is a trade off between resolution and high count rate capability. Detectors with a low amount of high frequency noise, like almost all scintillation detectors with photomultiplier, can be run with a short shap ...
Undergraduate Category: Engineering and Technology Degree Level: Bachelor of Science, Engineering
Undergraduate Category: Engineering and Technology Degree Level: Bachelor of Science, Engineering

... A comparison between the sensor signal acquired by different circuits is examined below in Figure 7. The plots shown in (a) are taken from the PhD students set-up, (b) is our setup with no filtering, and (c) is a with our analog filtering. Figure 8 shows the relative power of the acquired signals in ...
Optimum Noise Filtering
Optimum Noise Filtering

... o If the frequency response of the filter matches the frequency spectrum of the signal, the S/N ratio is maximized.  At frequencies where the signal is strong, the system gain should also be high to enhance the difference between the signal and the noise.  At frequencies where the signal is weak, ...
ECG Filtering
ECG Filtering

... Basically make a highpass filter to cut of the lower-frequency components (the baseline wander) The cut-off frequency should be selected so as to ECG signal information remains undistorted while as much as possible of the baseline wander is removed; hence the lowest-frequency component of the ECG sh ...
Experiment 5 Active filters and tuned amplifiers
Experiment 5 Active filters and tuned amplifiers

... better demonstrate the noise rejection capabilities of the lock–in amplifier, still more noise will be intentionally added to the signal. This noise will be obtained from the noise generator circuit available on the reference job board. The relevant part of the reference job board circuit is shown. ...
Benefits of Sigma-Delta ADCs
Benefits of Sigma-Delta ADCs

... The output data rate can now be reduced lower than the original sampling rate of Kfs because the bandwidth of the digital LPF on the output. The Nyquist criterion is still satisfied. The slower data rate is achieved by a process called decimation by a factor of M. This process passes every Mth bit t ...
calSetFilter Synopsis Syntax Description
calSetFilter Synopsis Syntax Description

... This routine sets the name of the filter to be used when calFindFile() is next called. A value of "−" means that this field is not relevant for the query (i.e. that no filter was used). This field corresponds to the filter parameter of the quizcaldb tool. It should be set to "−" for all queries of t ...
PMU Emulator and Animation for Synchrophasor Education
PMU Emulator and Animation for Synchrophasor Education

... with system dynamic conditions  How noise, filtering, estimation impact PMU output  Easy to integrate into existing training or education modules ...
Laboratory 8 Lock-in amplifier1 Prior to the lab, • Understand the
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... Advise from previous students that did this lab… “ I think the class in general got too excited building the circuit and completely forgot about the resonance frequency. So when we went back to start trouble shooting, we first encountered problems with the resistors, and focused on fixing that. [By ...
Experiment 5
Experiment 5

... In summary, the kit is connected to the PC via a USB port. It has stereo audio input and output, as well as one analog in and out. In your experiments, you will use the stereo in to feed analog signals from the PC via a media player. The stereo out is connected to speakers. You can therefore process ...
Noise Bridge
Noise Bridge

... Then we turned our attention to a more expensive radio. This time we were shelling out a whole £2.99 ! Sold by the UK store “Superdrug” this radio sported 10 short wave bands as well as FM and medium wave. The major discovery was that the display was actually a frequency counter. ...
PPT - Senior Design
PPT - Senior Design

... • With the filter in-line generate a sine wave of known amplitude. • Find amplitude of filtered sine wave • Divide this amplitude by the amplitude of the unfiltered sine wave • Convert to decibels – 20 log10(filtered / unfiltered) ...
Well Controlled Audio Noise Source
Well Controlled Audio Noise Source

... bitstream output is a digital signal which is converted to an analog noise with a filter. A sync pulse is available triggering once per sequence as shown in Figure 2. The bitstream output of the PRS repeats every 2^n-1 clock pulses. For a 1.0 MHz clock, a 16-bit PRS repeats its pattern every 65 msec ...
Final Presentation
Final Presentation

... ● Simple pull-up configuration ● Simple circuit for debouncing ● Using time constant of 3.3ms ...
Page 1 Transceiver Controls
Page 1 Transceiver Controls

... Terminal Node Controller is connected between a transceiver and computer in a packet radio station In digital communications the computer sound card provides audio to the microphone input and converts received audio to digital form RF Grounding > Flat strap conductor is best to use for RF grounding ...
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Matched filter

In signal processing, a matched filter (originally known as a North filter) is obtained by correlating a known signal, or template, with an unknown signal to detect the presence of the template in the unknown signal. This is equivalent to convolving the unknown signal with a conjugated time-reversed version of the template. The matched filter is the optimal linear filter for maximizing the signal to noise ratio (SNR) in the presence of additive stochastic noise. Matched filters are commonly used in radar, in which a known signal is sent out, and the reflected signal is examined for common elements of the out-going signal. Pulse compression is an example of matched filtering. It is so called because impulse response is matched to input pulse signals. Two-dimensional matched filters are commonly used in image processing, e.g., to improve SNR for X-ray.Matched filtering is a demodulation technique with LTI (Linear Time Invariant) filters to maximize SNR.
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