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浏览/检索结果: 共8条，第1-8条 帮助 限定条件 专题：北京航空航天大学    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Encoding of non-binary quasi-cyclic codes by Lin-Chung-Han transform 会议论文 2018 IEEE Information Theory Workshop, ITW 2018, 2018-11-25 作者:  Li, R.;  Huang, Q.;  Wang, Z. 收藏  |  浏览/下载：9/0  |  提交时间：2019/12/30 Block codes  Convolution  Encoding (symbols)  Fast Fourier transforms  Circulant matrix  Circulants  Convolution theorems  Cyclic convolutions  Encoding algorithms  Fast algorithms  Polynomial basis  Quasicyclic codes  Signal encoding   2D ISAR imaging using SFFT 期刊论文 Advances in Intelligent Systems and Computing, 2019, 卷号: 752, 页码: 643-650 作者:  Qian, Y.;  Hong, T. 收藏  |  浏览/下载：6/0  |  提交时间：2019/12/30 Fast Fourier transforms  Intelligent computing  Inverse synthetic aperture radar  Inverse transforms  Imaging efficiency  Inverse synthetic aperture radar (ISAR) imaging  Inverse synthetic aperture radars (ISAR)  ISAR  ISAR Imaging  Radar signals  Sparse fast Fourier transform (SFFT)  Stepped frequency radar  Radar imaging   Real-time and high accuracy frequency measurements for intermediate frequency narrowband signals 期刊论文 REVIEW OF SCIENTIFIC INSTRUMENTS, 2018, 卷号: 89, 页码: 014704 作者:  Tian, Jing;  Meng, Xiaofeng;  Nie, Jing;  Lin, Liwei 收藏  |  浏览/下载：4/0  |  提交时间：2019/12/30 Discrete Fourier transforms  Fast Fourier transforms  Fourier analysis  Mean square error  Modulators  Accurate measurement  Conventional methods  Fourier coefficients  Frequency measurements  Intermediate frequencies  Intermediate frequency signals  Sampling frequencies  Sigma Delta modulator  Iterative methods  article  calculation  Fourier transformation  sampling   The Data Analysis of Continuous Wave Terahertz Spectrometer in Time Domain 会议论文 International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 作者:  Kong, D.;  Wu, X.;  Dai, J.;  Ruan, C. 收藏  |  浏览/下载：2/0  |  提交时间：2019/12/30 Fabry-Perot interferometers  Fast Fourier transforms  Frequency domain analysis  Spectrometers  Terahertz waves  Continuous-wave terahertz  Fabry Perot interference  Hilbert transformations  Inverse fast Fourier transforms  Time domain  Time-domain signal  Time domain analysis   Plane Wave Synthesis Using Near Field Wave Spectrum Transform Embedded into Intersection Approach 会议论文 2018 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2018 - Proceedings 作者:  Wu, Y.;  Wu, J.;  Li, Z. 收藏  |  浏览/下载：12/0  |  提交时间：2019/12/30 Elastic waves  Electric current control  Fast Fourier transforms  Inverse problems  Millimeter waves  Spectrum analysis  Wavefronts  Angular spectra  Aperture synthesis  Fourier transform pair  Inverse fast Fourier transforms  Near fields  Plane wave spectrum  Plane wave synthesis  Transform function  Wave propagation   Modified fast Fourier transform in FBMC for satellite communications 期刊论文 CHINESE JOURNAL OF AERONAUTICS, 2017, 卷号: 30, 页码: 1519-1527 作者:  Yang, Chaosan;  Liu, Rongke;  Duan, Ruifeng 收藏  |  浏览/下载：3/0  |  提交时间：2019/12/30 Doppler effect  Fast Fourier transforms  Filter bank multi-carrier  Inter-carrier interference  Inter-symbol interference  Signal to interference and noise ratio   Efficient and Stable Exponential Runge-Kutta Methods for Parabolic Equations 期刊论文 ADVANCES IN APPLIED MATHEMATICS AND MECHANICS, 2017, 卷号: 9, 页码: 157-172 作者:  Zhu, Liyong 收藏  |  浏览/下载：2/0  |  提交时间：2019/12/30 Exponential Runge-Kutta method  explicit scheme  linear splitting  discrete fast Fourier transforms  Allen-Cahn equation   Fast non-linearly constrained least square joint estimation of position and velocity for X-ray pulsar-based navigation 期刊论文 IET RADAR SONAR AND NAVIGATION, 2014, 卷号: 8, 页码: 1154-1163 作者:  Liu, Jin;  Fang, Jiancheng;  Wu, Jin;  Kang, Zhiwei;  Ning, Xiaolin 收藏  |  浏览/下载：4/0  |  提交时间：2020/01/06 least squares approximations  X-ray apparatus  Doppler effect  space vehicles  aircraft navigation  time-of-arrival estimation  Fourier transforms  maximum likelihood estimation  fast nonlinearly constrained least square joint estimation  X-ray pulsar-based navigation  computational capacity  on-board computer  XNAV  Doppler spacecraft velocity estimation  pulse time-of-arrival estimation method  pulse proflle distortion  Fourier transform-based TOA estimation method  spacecraft positio