中国科学院机构知识库网格系统: 检索

A Distributed and Parallel Accelerator Design for 3-D Acoustic Imaging on FPGA-Based Systems 期刊论文 OAI收割
IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, 2024, 卷号: 43, 期号: 5, 页码: 1401-1414
作者: Zhao, Dongdong; Mao, Weibo; Chen, Peng; Hu, Yingtian; Liang, Haoran

|

收藏 | 浏览/下载：34/0 | 提交时间：2024/06/17

Imaging Sonar Array signal processing Ultra wideband technology Computer architecture Transducers Acoustic beams 3-D acoustic imaging algorithm-hardware co-designed distributed and parallel architecture fieldprogrammable gate array (FPGA)-based accelerator

Enhancing Dimensional Emotion Recognition from Speech through Modulation-Filtered Cochleagram and Parallel Attention Recurrent Network 期刊论文 OAI收割
ELECTRONICS, 2023, 卷号: 12, 期号: 22, 页码: 15
作者: Peng, Zhichao; Zeng, Hua; Li, Yongwei; Du, Yegang; Dang, Jianwu

|

收藏 | 浏览/下载：10/0 | 提交时间：2024/02/22

modulation-filtered cochleagram parallel attention recurrent neural network dimensional emotion recognition auditory signal processing noise-robust

Parallel transformation of K-SVD solar image denoising algorithm 会议论文 OAI收割
作者: Liang, Youwen; Tian, Yu; Li, Mei

|

收藏 | 浏览/下载：22/0 | 提交时间：2018/12/20

Application programming interfaces (API) - Parallel processing systems - Parallel programming - Photonics - Signal to noise ratio - White noise

Real-Time Controller Based on FPGA and DSP for Solar Ground Layer Adaptive Optics Prototype System at 1-m NVST 期刊论文 OAI收割
IEEE Photonics Journal, 2017, 卷号: 9, 期号: 2, 页码: 7840009
作者: Kong, Lin; Zhu, Lei; Zhang, Lanqiang; Bao, Hua; Rao, Changhui

|

收藏 | 浏览/下载：48/0 | 提交时间：2018/11/20

Adaptive control systems - Controllers - Digital signal processing - Digital signal processors - Electric appliances - Field programmable gate arrays (FPGA) - Multicore programming - Parallel processing systems - Signal processing - Timing jitter - Wavefronts

Highly efficient synthetic aperture radar processing system for airborne sensors using cpu plus gpu architecture 期刊论文 iSwitch采集
Journal of applied remote sensing, 2015, 卷号: 9, 页码: 12
作者: Wu, Zheng; Liu, Yabo

收藏 | 浏览/下载：83/0 | 提交时间：2019/05/10

Synthetic aperture radar Graphical processing unit Signal processing system Compute unified device architecture Parallel computing

Parallel signal processing software 会议论文 OAI收割
International Conference on Multimedia, Communication and Computing Application, MCCA 2014, Xiamen, China, October 15-16, 2014
作者: Li X(李想); Du JS(杜劲松); Hu JT(胡静涛); Bi X(毕欣)

收藏 | 浏览/下载：31/0 | 提交时间：2015/12/28

Parallel signal processing Performance prediction Graphical Generalization

A real-time SAR imaging system based on CPUGPU heterogeneous platform 会议论文 OAI收割
2012 11th International Conference on Signal Processing, ICSP 2012,, Beijing, China, October 21, 2012 - October 25,2012
Wu, Yewei; Chen, Jun; Zhang, Hongqun

收藏 | 浏览/下载：20/0 | 提交时间：2014/12/07

Imaging systems Parallel architectures Signal processing

Subsidence and DSM estimation using GeoWatch software 会议论文 OAI收割
2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011,, Vancouver, BC, Canada, July 24, 2011 - July 29,2011
Zhao, Aiguo; Lin, Hui; Guo, Huadong; Chen, Jinsong; Jiang, Liming

收藏 | 浏览/下载：14/0 | 提交时间：2014/12/07

Pipeline processing systems Data handling Deformation Estimation Geodetic satellites Geology Interferometry Parallel processing systems Personal computers Remote sensing Signal processing Subsidence Synthetic aperture radar

Far-field focusing of laser beam based on digital image processing techniques (EI CONFERENCE) 会议论文 OAI收割
Optoelectronic Imaging and Multimedia Technology, October 18, 2010 - October 20, 2010, Beijing, China
作者: Zhao S.; Tian Y.-Z.; Liu L.-S.; Guo J.; Zhang H.-Y.

收藏 | 浏览/下载：27/0 | 提交时间：2013/03/25

In order to lead the laser beam transmit in the atmosphere convergently an experiment of laser focus at the distance of 450m and 300m has been operated in the outdoor place. The actual manipulations are as follows: Firstly the laser was collimated by a beam expander then the near-parallel laser beam was transmitted with a Galileo telescope system and the distance between the concave lens and the convex lens can be tuned through a precise displacement platform so the focus of the system changed due to the tiny displacement of the concave lens. Secondly the average power of the laser spot can be measured using power meter the power is 47.67mW and the standard deviation is 0.67mW while the focal length is 450m. Thirdly the energy distribution was found through the laser beam analyzer. The spot images were saved using the beam analyzer then the saved image can be processed with Matlab software afterwards. The function named EDGE and Sobel operator was used in the pre-processing of the saved image then method of median filter was used in the course of image de-noising and 53H filter was adopted in the signal analysis. The diameter of laser spot was obtained by the method above the diameter is 5.56mm and the standard deviation is 0.24mm. The spot center excursion is 0.56mm it is 10.43% of the total diameter of the laser spot. At last the key factors of the energy dissipation in the focusing system can be summarized as follows: restriction of the diffraction limit attenuation in the atmosphere geometrical aberration of optical system and the diffraction limit and the geometrical aberration are significant in the three factors above so we can reduce the impact of the both factors during the design of optical system. The reliable referenced data of the system design can be acquired through the primary experiment research. 2010 SPIE.

Storage and compression design of high speed CCD (EI CONFERENCE) 会议论文 OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China
Cai X.; Zhai L. P.

收藏 | 浏览/下载：57/0 | 提交时间：2013/03/25

In current field of CCD measurement large area and high resolution CCD is used to obtain big measurement image so that speed and capacity of CCD requires high performance of later storage and process system. The paper discusses how to use SCSI hard disk to construct storage system and use DSPs and FPGA to realize image compression. As for storage subsystem Because CCD is divided into multiplex output SCSI array is used in RAID0 way. The storage system is composed of high speed buffer DMA controller control MCU SCSI protocol controller and SCSI hard disk. As for compression subsystem according to requirement of communication and monitor system the output is fixed resolution image and analog PAL signal. The compression means is JPEG2000 standard in which 9/7 wavelets in lifting format is used. 2 DSPs and FPGA are used to compose parallel compression system. The system is composed of FPGA pre-processing module DSP compression module video decoder module data buffer module and communication module. Firstly discrete wavelet transform and quantization is realized in FPGA. Secondly entropy coding and stream adaption is realized in DSPs. Last analog PAL signal is output by Video decoder. Data buffer is realized in synchronous dual-port RAM and state of subsystem is transfer to controller. Through subjective and objective evaluation the storage and compression system satisfies the requirement of system. 2009 SPIE.