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Topic: Bandwidth (signal processing)

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Appendix C JASA Standards Handbook The digitizers may be comprised of multiple speed, bandwidth and dynamic range converters (reflecting the different processing bandwidth/dynamic range trade-offs required for different signals). The coverage provided by the JASA, in frequency, simultaneous processing channels, and in the mix and type of signals, is intended to be scalable to meet the requirements of the missions and the restrictions of the platforms. Signal data will be provided to the data flow network. www.fas.org /irp/agency/daro/product/jasa/appd.html   (1806 words)

Digital-to-analog converter - Wikipedia, the free encyclopedia As stated in the Shannon-Nyquist sampling theorem, a signal must be sampled at over twice the bandwidth of the desired signal. An analog signal from a microphone or other sound source can be converted to digital form for storage in a computer, where it can be edited if necessary and then reconstructed for playback. Video signals from a digital source, such as a computer, must be converted to analog form if they are to be displayed on an analog monitor. www.sevenhills.us /project/wikipedia/index.php/Digital_to_analog_converter   (1240 words)

Time-Frequency/Time-Scale Analysis for Radar Applications The objective of radar processing is to estimate the target's reflective density function from received baseband signal samples, the so-called frequency signature. The range resolution is directly related to the bandwidth of the transmitted radar signal. The purpose of analysis is to detect and to extract the signal embedded in noise. airborne.nrl.navy.mil /~vchen/tftsa.html   (1663 words)

thesis The operation of a wide bandwidth ultrasonic spectrometer for the experimental measurement of phase velocity and attenuation, and the subsequent acquisition and signal processing of the data that is needed are outlined. Signal processing routines which were used to correct the measured spectra for the insertion effects of the transducers and receiver amplifier and to whiten the electrical input waveform spectrum are described, along with routines to calculate the absorption and dispersion spectra. Numerous 1-D signal processing techniques are applied to the data and their insensitivity to the effect of the material characteristics on the data is noted. www.eee.nott.ac.uk /wwwudsp/thesis.html   (3498 words)

Signal Processing for SAIL The Aerospace SAIL experiments used a series of pulses in which the optical frequency was swept quasi-linearly in time over a bandwidth greater than 1000 gigahertz. For each pulse, the scaled phase-error correction from the reference channel is applied to the target channel, using the scale factor determined from the composite sharpness metric. First, for each pulse, a Fourier transform is applied to the real values obtained from both the target and reference channels. www.aero.org /publications/crosslink/summer2004/08_sidebar1.html   (520 words)

Digital Signal Processing Filter Terminology Filter attenuation is the ratio, at a given frequency, of the signal amplitude at the output of the filter over the signal amplitude at the input of the filter, defined as For a low-pass filter, the bandwidth is equal to the cutoff frequency. For an FIR filter, the filter coefficients are, by definition, the impulse response of the filter. www.dspguru.com /info/terms/filtterm/index2.htm   (2987 words)

Bandwidth - Wikipedia, the free encyclopedia In signal processing and control theory, the bandwidth is the frequency at which the closed-loop system gain drops to −3 dB. In discrete time systems and digital signal processing, bandwidth is related to sampling rate according to the Nyquist-Shannon sampling theorem. The bandwidth of an electronic filter is the part of the filter's frequency response that lies within 3 dB compared to the center frequency of its peak. www.eastcleveland.us /project/wikipedia/index.php/Bandwidth   (516 words)

Signal Processing Laboratory The table shows that the frequency incrementf and the bandwidth of the narrowband windows are keptconstant, while the processing frequency values are determinedusing the group delay moving entropy technique. Simulation results arepresented which demonstrate the feasibility of the multistep splitspectrum processing technique for detecting multiple targets insuch materials.I. In ultrasonic flaw detection, it is often difficult to distinguishthe flaw signal from the background grain noise. Although split spectrum processing is an effectivemethod for suppressing grain noise in ultrasonic nondestruc-tive testing, its application was mainly limited to the detectionof single targets or multiple targets having similar spectralcharacteristics. www.ece.drexel.edu /SPL/nov1995.html   (516 words)

Class Definition for Class 704 - DATA PROCESSING: SPEECH SIGNAL PROCESSING, LINGUISTICS, LANGUAGE TRANSLATION, AND AUDIO COMPRESSION/DECOMPRESSION This class includes audio signal processing wherein significant processing is performed to modify the signal"s bandwidth or time characteristics for compression or expansion of the signal. for hybrid computers, subclasses 100+ for calculators, digital signal processing and arithmetical processing, per se, subclasses 300+ for digital filters, and subclasses 800+ for electric analog computers. Bandwidths of the hearing process, as measured by the masking effect of a white, random noise in which a person detects a pure tone. www.uspto.gov /web/patents/classification/uspc704/defs704.htm   (3708 words)

EE265 Home Page How do you acquire signals and what are the constraints in terms of signal bandwidth, processing throughput, storage, and error tolerance (quantization, error propagation, and aliasing). Course description: This course introduces the fundamentals of applied digital signal processing by implementing a wide range of digital signal processing (DSP) applications on the Texas Instrument (TI) TMS320C54x DSP processor. Real-time implementation issues as well as performance tradeoffs and processor/algorithm limitations are stressed with the intent that upon completing this lab course, you will be able to apply DSP processing to your work, projects, experiments or any real-world application that you may encounter. dualist.stanford.edu /~ee265   (245 words)

Furaxa - Signal Processing The pulser/sampler makes advanced architectures in signal processing, amplification, equalization and mixing economically practical to develop at much higher frequencies than formerly possible. Conventional microwave image-reject mixers used to convert a RF signal into a near baseband signal typically have less than an octave in bandwidth over which they can operate. For more information on how the Libove Pulser / Sampler can be used in a Digital Signal Processor based system, see the High Speed Signal Processing section of the Pulser / Sampler Press Release. www.furaxa.com /HSSP.htm   (268 words)

pulstran (Signal Processing Toolbox) This example generates a periodic Gaussian pulse signal at 10 kHz, with 50% bandwidth. The pulse repetition frequency is 1 kHz, sample rate is 50 kHz, and pulse train length is 10 msec. generates a pulse train that is the sum of multiple delayed interpolations of the prototype pulse in vector www.haystack.mit.edu /computing/matlab5.3.1/help/toolbox/signal/pulstran.html   (294 words)

Optimum Subband Filterbank Design for Radar Array Signal Processing with Pulse Compression These include the analysis filter used to decompose the return signals into narrowband components, the synthesis filter used when combining subband components after processing, and the pulse compression generating filter used to generate subband pulse compression filters from a wideband pulse compression filter. These benefits include a major computational reduction in the adaptive processing task; an opcount reduction in the equalizer; and easy parallelization of the entire front-end processing chain that enables an implementation with higher system bandwidth and lower power consumption for a given processor technology. Processing in the subband domain has been shown to provide significant benefits when compared to conventional wideband processing. ite.gmu.edu /sam2002/sam2000/Final%20Abstracts/Optimum%20Subband%20Filterbank%20Design%20for%20Radar%20Array%20Signal%20Processing%20with%20Pulse%20Compression.html   (257 words)

Digital Signal Processing Problems The filter is to operate on signals that have a 10 kHz bandwidth, and will serve as a lowpass filter. This signal serves as the input to a first-order RC lowpass filter. The receiver would bandpass the received signal, pass the result through an A/D converter, perform all the demodulation with digital signal processing systems, and end with a D/A converter to produce the analog message signal. cnx.org /content/m10351/latest   (2657 words)

TI Introduces Wideband, Voltage-Controlled Amplifier with Exceptional Gain Adjust Range for High Performance Signal Processing Featuring a continuously variable 80dB gain adjust range, +/-0.5dB gain accuracy, and a constant 35MHz signal bandwidth, the VCA810 provides a differential input to single ended output amplifier primarily used for analog signal processing in pulse or time domain systems. Texas Instruments Incorporated provides innovative DSP and analog technologies to meet our customers' real world signal processing requirements. Since the VCA810 offers a precisely trimmed dB/V gain adjust characteristic, AGC loops can use the gain control voltage as a received signal strength indicator with excellent accuracy. www.forrelease.com /D20041021/dath009.P2.10202004203241.27661.html   (458 words)

TechOnLine - Educational Resources for Electronics Engineers Jump start AMBA 3 AXI design verification with xVC enabled DesignWare Verification IP The AMBA 3 AXI bus protocol is the newest and most capable on-chip fabric protocol introduced by ARM, delivering scalable performance, configurable to customers bandwidth/speed/area/power requirements. Integrated Circuit DFM Framework for Deep Subwavelength Processes DFM in Action - FPGA Chip performance Improvement with Gate Shrink through Alternating PSM 90nm process www.techonline.com   (306 words)

Ultra-high-speed digital filtering algorithm for video signal processing This IMAP digital filter is especially suitable for highly computing oriented video signal processing algorithms such as spatio-temporal filtering, motion estimation or bandwidth reduction algorithm. The proposed 1-D IMAP digital filter can be easily transformed to the 2-D structure for fast video signal processing. 1995 International Conference on Image Processing (ICIP'95) - Volume 2   p. csdl2.computer.org /persagen/DLAbsToc.jsp?resourcePath=/dl/proceedings/&toc=comp/proceedings/icip/1995/7310/02/7310toc.xml&DOI=10.1109/ICIP.1995.537429   (235 words)

Bandwidth - Wikipedia, the free encyclopedia Bandwidth is a central concept in many fields, including information theory, radio communications, signal processing, and spectroscopy. In signal processing and control theory the bandwidth is the frequency at which the closed-loop system gain drops to −3 dB. Bandwidth of a signal is a measure of how rapidly it fluctuates with respect to time. en.wikipedia.org /wiki/Bandwidth   (856 words)

Wiley::Pseudo Random Signal Processing: Theory and Application In recent years, pseudo random signal processing has proven to be a critical enabler of modern communication, information, security and measurement systems. The signal’s pseudo random, noise-like properties make it vitally important as a tool for protecting against interference, alleviating multipath propagation and allowing the potential of sharing bandwidth with other users. Pseudo Random Signal Processing: Theory and Applicationis an essential introduction to the subject for practising Electronics Engineers and researchers in the fields of mobile communications, satellite navigation, signal analysis, circuit testing, cryptology, watermarking, and measurement. eu.wiley.com /WileyCDA/WileyTitle/productCd-0470866578.html   (317 words)

FDI DSP - Digital Signal Processing - Design Guide A digital filter computes a quantized time-domain representation of the convolution of the sampled input time function and a representation of the weighting function of the filter. Digital hardware filters are desirable for high bandwidth applications; the trade-offs are limited design flexibility and higher cost. It is important to note that distortion and noise can be introduced into digital filters simply by the conversion of analog signals into digital data, also by the digital filtering process itself and lastly by conversion of processed data back into analog. www.freqdev.com /guide/dspguide.html   (3338 words)

Essential bandwidth -- Facts, Info, and Encyclopedia article In (Click link for more info and facts about signal processing) signal processing, the essential bandwidth is the portion of a signal spectrum in the (Click link for more info and facts about frequency domain) frequency domain which contains most of the energy of the signal. Essential bandwidth -- Facts, Info, and Encyclopedia article www.absoluteastronomy.com /encyclopedia/e/es/essential_bandwidth.htm   (3338 words)

DSP : Operating Modes: DSP Digital signal processing - Frequently asked questions on Digital Signal Processing JT65 - JT65 is a digital protocol intended for Amateur Radio communication with extremely weak signals. Its data rate is 31.25 bauds (about 50 word-per-minute), and its narrow bandwidth (approximately 60 Hz at -26 dB) reduces its susceptibility to noise. www.dxzone.com /catalog/Operating_Modes/DSP   (941 words)

Electrical Engineering at UTA Analog and mixed signal Integrated Circuit (IC) design, opto-electronic (OE) IC design, RF IC design, IC design for ultra-wide bandwidth (UWB) wireless communications, systems-on-a chip (SOC) implementation, optical system simulation and implementation, modeling of high speed circuit parasitic, and digital signal processing. His research interests centers on analog and mixed signal circuit design, IC design for the optical and the wireless communication, systems-on-a chip implementation, UWB transceiver design, modeling of high speed circuit parasitic, digital signal processing. Before he joined UTA, he was an advance circuit engineer in Quellan Inc. located in Atlanta, GA developing transceivers for high-speed optical communication systems to improve spectral efficiency. www-ee.uta.edu /eedept/faculty/jung.htm   (241 words)

Home-Adhar Development System: The digital signal processing (DSP) Imaging Developer's system is a complete development environment for rapid prototyping of advanced video and imaging systems based on the TMS320C6000 DSP (link to data sheet) platform. The processor provides real-time programmable performance to support video and imaging for high bandwidth streaming video and real-time image processing. Today, Digital Signal Processors (DSPs) are embedded in Microscopes, ECG (electro cardiogram) monitors, Fax machines, modems, cellular phones, mobile radio systems, MPEG recording and playback, High Definition Television (HDTV), digital answering machines, feature phones, and digital cameras to name just a few. people.uncw.edu /adharg/DSP/dsp.html   (241 words)

Essential bandwidth - Wikipedia, the free encyclopedia In signal processing, the essential bandwidth is the portion of a signal spectrum in the frequency domain which contains most of the energy of the signal. This page was last modified 17:57, 24 May 2005. en.wikipedia.org /?title=Essential_bandwidth   (241 words)

Event Details - Faculty of Engineering - University of Alberta His current research interests include communications theory, information theory, statistical signal/image processing, wireless communications, wireless sensor networks and bio-medical signal/image processing. A key conclusion that follows from our large system analysis is that, in the case of deterministic signals (whether the observation noise is correlated or not) it is better to fuse together as many not-so-reliable local decisions as possible compared to combining few reliable decisions. Also, for the first time, we show how large random matrix theory can be used to quantify the large system decentralized detection performance in both noisy and band-limited channels. www.engineering.ualberta.ca /details.cfm?ID_event=3836   (241 words)

Resume Current research is at the intersection of communication theory, signal processing, and information theory. My current research is at the intersection of communication theory, signal processing, and information theory. I use theory, simulations, and prototyping are used to validate research ideas. www.ece.utexas.edu /~rheath/resume   (241 words)

Method and apparatus for automatic adjustment with pilot signal of television image processing system - Patent 4459613 A pilot generator 16 generates a pilot signal burst at a frequency and amplitude selected to be representative of the television signals most likely to be degraded by the limited bandwidth medium. A signal related to the average amplitude of recovered pilot signal bursts is used to regulate the amount of pre-boost removed by the playback enhancer and noise reducer 26. The post-degradation processor recovers the pilot, converts it into an automatic enhancement adjustment signal which is related to the amplitude of recovered pilot bursts preferably averaged over a predetermined number of frames, and uses the adjustment signal to adjust automatically the operation of the post degradation processor. www.freepatentsonline.com /4459613.html   (4606 words)

Signal-to-noise ratio - Wikipedia, the free encyclopedia Both signal and noise power are measured within the system bandwidth. In this case the noise is the error signal caused by the quantisation of the signal, taking place in the analog to digital conversion. Signal-to-noise ratios are closely related to the concept of dynamic range, where dynamic range measures the ratio between noise and the greatest un-distorted signal on a channel. en.wikipedia.org /wiki/Signal-to-noise_ratio   (594 words)

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