中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共7条,第1-7条 帮助

条数/页: 排序方式:
A virtual parallel model for the buffer landing of multi-legged landing gear 期刊论文  OAI收割
MECHANISM AND MACHINE THEORY, 2024, 卷号: 200, 页码: 27
作者:  
Liu, Jian;  Zhang, Dan;  Tian, Chunxu;  Ma, Weizhan;  Xia, Zhihao
  |  收藏  |  浏览/下载:13/0  |  提交时间:2024/09/09
OPTIMIZATION APPROACHES TO MPI AND AREA MERGING-BASED PARALLEL BUFFER ALGORITHM 期刊论文  OAI收割
Boletim De Ciencias Geodesicas, 2014, 卷号: 20, 期号: 2, 页码: 237-256
Fan J. F.; Ji M.; Gu G. M.; Sun Y.
收藏  |  浏览/下载:49/0  |  提交时间:2014/12/24
一种基于缓存的并发ETL数据流程处理框架 期刊论文  OAI收割
Computer Applications and Software, 2012, 卷号: 29, 期号: 1, 页码: 88-91,144
罗后启; 周伟; 叶丹; 于瑾维
收藏  |  浏览/下载:46/0  |  提交时间:2012/11/12
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.  
Application of multi-sensors parallel fusion system in photoelectric tracing (EI CONFERENCE) 会议论文  OAI收割
2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications, November 16, 2008 - November 19, 2008, Beijing, China
Cheng G.-Y.; Cai S.; Gao H.-B.; Zhang S.-M.; Qiao Y.-F.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
To solve the real-time and reliability problem of tracking servo-control system in optoelectronic theodolite  a multisensors parallel processing system was proposed. Misdistances of three different wavebands were imported into system  and then prediction was done in DSP1 to get the actual position information. Data fusion was accomplished in PPGA imported by multi channel buffer serial port. The compound position information was used to control the theodolite. The results were compared with external guide data in DSP2 to implement correction of above calculation  and then were imported to epistemic machine through PXI interface. The simulation experiment of each calculation unit showed that this system could solve the real-time problem of feature level data fusion. The simulation result showed that the system can satisfy the real-time requirement with 1.25ms in theodolite with three imaging systems  while sampling frequency of photoelectric encoder was 800 Hz. 2009 SPIE.  
RESEARCH ON PARALLEL BUFFER ANALYSIS WITH GRIDED BASED HPC TECHNOLOGY 会议论文  OAI收割
2009 Ieee International Geoscience and Remote Sensing Symposium, Vols 1-5, New York
Pang, Lv; Li, Guoqing; Yan, Yunxuan; Ma, Yan
收藏  |  浏览/下载:21/0  |  提交时间:2014/12/07
An experience on buffer analyzing in Grid 会议论文  OAI收割
Igarss 2004: Ieee International Geoscience and Remote Sensing Symposium Proceedings, Vols 1-7: Science for Society: Exploring and Managing a Changing Planet, New York
Hu, YC; Xue, Y; Cai, GY; Luo, Y; Wang, JQ; Tang, JK; Zhong, SB; Wang, YG; Sun, XS; Zhang, AJ
收藏  |  浏览/下载:25/0  |  提交时间:2014/12/07