2015 IEEE Signal Processing and Signal Processing Education Workshop (SP/SPE)最新文献_第6页

Compensating for oversampling effects in polyphase channelizers: A radio astronomy application 多相信道器中过采样效应的补偿:射电天文学应用

2015 IEEE Signal Processing and Signal Processing Education Workshop (SP/SPE) Pub Date : 2015-08-01 DOI: 10.1109/DSP-SPE.2015.7369562

J. Tuthill, G. Hampson, J. Bunton, F. Harris, A. Brown, R. Ferris, T. Bateman

{"title":"Compensating for oversampling effects in polyphase channelizers: A radio astronomy application","authors":"J. Tuthill, G. Hampson, J. Bunton, F. Harris, A. Brown, R. Ferris, T. Bateman","doi":"10.1109/DSP-SPE.2015.7369562","DOIUrl":"https://doi.org/10.1109/DSP-SPE.2015.7369562","url":null,"abstract":"In order to maximize science returns in radio astronomy there is a constant drive to process ever wider instantaneous bandwidths. A key function of a radio telescope signal processing system is to divide a wide input bandwidth into a number of narrow sub-bands for further processing and analysis. The polyphase filter-bank channelizer has become the primary technique for performing this function due to its flexibility and suitability for very efficient implementation in FPGA hardware. Furthermore, oversampling polyphase filter-banks are gaining popularity in this role due to their ability to reduce spectral image components in each sub-band to very low levels for a given prototype filter response. A characteristic of the oversampling operation in a polyphase filterbank, however, is that the resulting sub-band outputs are in general no longer band centered on DC (as is the case for a maximally decimated filterbank) but are shifted by an amount that depends on the index of the sub-band. In this paper we present the structure of the oversampled polyphase filterbank used for the new Australian Square Kilometer Array Pathfinder (ASKAP) radio telescope and describe a technique used to correct for the sub-band frequency shift brought about by oversampling.","PeriodicalId":91992,"journal":{"name":"2015 IEEE Signal Processing and Signal Processing Education Workshop (SP/SPE)","volume":"72 1","pages":"255-260"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84346689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Generating Laplace process with desired autocorrelation from Gaussian AR processes 从高斯AR过程生成具有期望自相关的拉普拉斯过程

2015 IEEE Signal Processing and Signal Processing Education Workshop (SP/SPE) Pub Date : 2015-08-01 DOI: 10.1109/DSP-SPE.2015.7369537

T. Ghirmai

引用次数: 2

Cancelling non-linear processing products due to strong out-of-band interference in radio astronomical arrays 消除射电天文阵列中强带外干扰的非线性处理产物

2015 IEEE Signal Processing and Signal Processing Education Workshop (SP/SPE) Pub Date : 2015-08-01 DOI: 10.1109/DSP-SPE.2015.7369565

Yifeng Wu, R. Black, B. Jeffs, K. Warnick

引用次数: 1

Signal processing techniques for enhancing multispectral images of ancient documents 古代文献多光谱图像增强的信号处理技术

2015 IEEE Signal Processing and Signal Processing Education Workshop (SP/SPE) Pub Date : 2015-08-01 DOI: 10.1109/DSP-SPE.2015.7369581

Trace A. Griffiths, G. Ware, T. Moon

引用次数: 0

An inquiry-based acoustic signal processing lab module for introducing digital communications 介绍数字通信的探究式声信号处理实验模块

2015 IEEE Signal Processing and Signal Processing Education Workshop (SP/SPE) Pub Date : 2015-08-01 DOI: 10.1109/DSP-SPE.2015.7369530

A. G. Klein

引用次数: 3

Analysis of randomized robust PCA for high dimensional data 高维数据的随机稳健主成分分析

2015 IEEE Signal Processing and Signal Processing Education Workshop (SP/SPE) Pub Date : 2015-08-01 DOI: 10.1109/DSP-SPE.2015.7369522

M. Rahmani, George K. Atia

引用次数: 5

The Cross-Ambiguity Function for emitter location and radar - practical issues for time discretization 辐射源定位与雷达的交叉模糊函数——时间离散的实际问题

2015 IEEE Signal Processing and Signal Processing Education Workshop (SP/SPE) Pub Date : 2015-08-01 DOI: 10.1109/DSP-SPE.2015.7369560

J. Schatzman

引用次数: 3

Dynamic model generation for application of compressed sensing to cryo-electron tomography reconstruction 压缩感知在低温电子层析成像重建中的动态模型生成

2015 IEEE Signal Processing and Signal Processing Education Workshop (SP/SPE) Pub Date : 2015-08-01 DOI: 10.1109/DSP-SPE.2015.7369557

S. Wood, E. Fontenla, Christopher A. Metzler, W. Chiu, Richard Baraniuk

{"title":"Dynamic model generation for application of compressed sensing to cryo-electron tomography reconstruction","authors":"S. Wood, E. Fontenla, Christopher A. Metzler, W. Chiu, Richard Baraniuk","doi":"10.1109/DSP-SPE.2015.7369557","DOIUrl":"https://doi.org/10.1109/DSP-SPE.2015.7369557","url":null,"abstract":"Cryo-electron tomography (cryo-ET), which produces three dimensional images at molecular resolution, is one of many applications that requires image reconstruction from projection measurements acquired with irregular measurement geometry. Although Fourier transform based reconstruction methods have been widely and successfully used in medical imaging for over 25 years, assumptions of regular measurement geometry and a band limited source cause direction sensitive artifacts when applied to cryo-ET. Iterative space domain methods such as compressed sensing could be applied to this severely underdetermined system with a limited range of projection angles and projection length, but progress has been hindered by the computational and storage requirements of the very large projection matrix of observation partials. In this paper we derive a method of dynamically computing the elements of the projection matrix accurately for continuous basis functions of limited extent with arbitrary beam width. Storage requirements are reduced by a factor of order 107 and there is no access overhead. This approach for limited angle and limited view measurement geometries is posed to enable dramatically improved reconstruction performance and is easily adapted to parallel computing architectures.","PeriodicalId":91992,"journal":{"name":"2015 IEEE Signal Processing and Signal Processing Education Workshop (SP/SPE)","volume":"15 1","pages":"226-231"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74484020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A practical strategy for spectral library partitioning and least-squares identification 一种实用的谱库划分和最小二乘识别策略

2015 IEEE Signal Processing and Signal Processing Education Workshop (SP/SPE) Pub Date : 2015-08-01 DOI: 10.1109/DSP-SPE.2015.7369583

Shawn Higbee

引用次数: 0

An introductory signal processing course offered across the curriculum 一门信号处理入门课程

2015 IEEE Signal Processing and Signal Processing Education Workshop (SP/SPE) Pub Date : 2015-08-01 DOI: 10.1109/DSP-SPE.2015.7369527

A. Spanias

{"title":"An introductory signal processing course offered across the curriculum","authors":"A. Spanias","doi":"10.1109/DSP-SPE.2015.7369527","DOIUrl":"https://doi.org/10.1109/DSP-SPE.2015.7369527","url":null,"abstract":"Signal processing algorithms and DSP chips are embedded nearly in every application that involves natural signal or data analysis and/or synthesis. Applications of digital signal processing (DSP) in engineering include electrical, mechanical, chemical, industrial and biomedical systems. Applications in other areas include entertainment, financial, health, computing, manufacturing, to name a few. At ASU we developed an elective course for an undergraduate program called Digital Culture that includes gaming, smart stages, computer music, visualization and other applications. We have offered the course online to arts majors in 2013. We begun adding multidisciplinary application content to this course and offered it again in 2015 as a hybrid online course with compulsory weekly on-campus sessions. Arrangements are being made to include it as an elective course in information management systems, computer informatics, mechanical engineering, and biomedical informatics. The course now includes several introductory topics in signal processing covered mostly at a qualitative and block diagram level; we added several simulations in MATLAB and in Java-DSP. The course covers basics of DSP starting from time and frequency domain analysis and sampling. It then covers digital FIR ad IIR filters and the FFT. About one third of the course covers applications which introduce qualitative descriptions of some advanced topics. For example, linear prediction and coding of speech are described at the block diagram level with MATLAB and Java simulations. Extensions to 2-D signal processing are covered as well with the focus on JPEG and MPEG applications. The syllabus, simulations and preliminary assessments of this course are presented in the paper.","PeriodicalId":91992,"journal":{"name":"2015 IEEE Signal Processing and Signal Processing Education Workshop (SP/SPE)","volume":"26 1","pages":"55-58"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81508096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3