检索结果-内蒙古大学图书馆

IET International Radar Conference 2015

作者： Ren, Xiao-Yuan Liu, Hai-Bo Li, Jin-Bing School of Information and Electronics Beijing Institute of Technology Beijing100081 China Beijing Key Laboratory of Embedded Real-Time Information Processing Technology China

ISBN: (纸本)9781849199940

High resolution medium penetrating imaging radar is a kind of important equipment which can be widely used in military, security, construction and other fields. For the sake of imaging the target buried in the medium fast and in high resolution, this paper analyzes the theory of high resolution medium penetrating imaging, proposes two dimensional fast scan method which combine column staggered array antenna with lead rail, presents the process of near field synthetic aperture imaging and structure of the prototype. In the end, the result of imaging test of the prototype is given. The prototype can penetrate 2.5cm board and image the small target, the imaging resolution is better than 1cm.

关键词： Radar imaging

来源：评论

学校读者我要写书评

暂无评论

A Satellite Data-Driven Coherent Parameters Estimation Method via Hierarchical HGRFT for Distributed Coherent Aperture Radar

IEEE Transactions on Radar Systems

引用

IEEE Transactions on Radar Systems 2024年 2卷 791-804页

作者： Li, Pucheng Ding, Zegang Li, Linghao Lv, Linhan Li, Zhe Zhu, Rui Wang, Guanxing Beijing Institute of Technology Radar Research Laboratory School of Information and Electronics Beijing Key Laboratory of Embedded Real-Time Information Processing Technology Beijing100081 China Beijing Institute of Technology Chongqing Innovation Center Chongqing401331 China

The distributed coherent aperture radar (DCAR) utilizes full coherent processing (FCP). Compared to single radar unit observations, N radar units can achieve an N3 times increase in signal-to-noise ratio (SNR), providing an advantage in observing distant targets. However, its stringent requirements for time and phase of multiple radar units make coherent parameters (CPs) estimation the crucial aspect of FCP. This article introduces a satellite data-driven CPs estimation method via hierarchical and hybrid generalized Radon-Fourier transform (HHGRFT). First, the FCP procedure is outlined, and the signal model with CPs is established. Second, the principles for selecting satellites and observation time in the experimental setup are induced, along with an analysis of the SNR variations during processing. Furthermore, through a hierarchical processing approach using the generalized Radon-Fourier transform (GRFT), interpulse coherence (IPC) processing, interunit-radar coherence (IURC) processing, and inter-subaperture coherent or noncoherent processing are sequentially conducted. The utilization of generalized sharpness (GS) and gradient descent method facilitated CPs estimation, subsequently enhancing the SNR post-coherence processing. Finally, the proposed method has been validated through simulation and successfully applied to a real DCAR system. © 2023 IEEE.

关键词： Signal to noise ratio

来源：评论

学校读者我要写书评

暂无评论

Optimization and verification of OpenVPX-based 10Gbps interconnection 17

Optimization and verification of OpenVPX-based 10Gbps interc...

引用

17th IEEE International Conference on Communication technology, ICCT 2017

作者： Ben, Rongrong Li, Xingming Hu, Shanqing Beijing Key Laboratory of Embedded Real-time Information Processing Technology Beijing Institute of Technology Beijing China Tsinghua University Beijing China

ISBN: (纸本)9781509039432

As serial date rates migrate to 10Gbps and beyond, the list of signal integrity (SI) concerns and pitfalls grows. This paper focuses the design of SI of 10G serial link on OpenVPX system, and the research of the corresponding design and optimization methods based on passive design of 10Gbps high speed serial link. Combined pre-emphasis and equalization, the design enhances the quality of full link, reduces the bit error rate, and ensures accurate transmission of 10 Gbps serial signal, with margin left for system operation. With simulation and testing, the methods are verified to be accurate and feasible in this paper. © 2017 IEEE.

关键词： Bit error rate

来源：评论

学校读者我要写书评

暂无评论

A clutter suppression method of ground penetrating radar for detecting shallow surface target

A clutter suppression method of ground penetrating radar for...

引用

IET International Radar Conference 2015

作者： Wang, Xun Liu, Hai-Bo Meng, Zheng School of Information and Electronics Beijing Institute of Technology Beijing100081 China Beijing Key Laboratory of Embedded Real-Time Information Processing Technology China

ISBN: (纸本)9781849199940

GPR for detecting shallow surface target has heavy clutter and target echo cannot be distinguished easily. This paper proposes a PCA-SVD mixed clutter suppression method to realize dimension reduction and reconstruction, which can improve the performance of clutter suppression effectively. SVD processing remove direct wave, firstly. Then PCA remove uncancelled clutter and remove noise. At last, we design an experiment to validate the performance of clutter suppression.

关键词： Ground penetrating radar systems

来源：评论

学校读者我要写书评

暂无评论

Considerations of designing P-band space-borned bistatic radar systems

Considerations of designing P-band space-borned bistatic rad...

引用

IET International Radar Conference 2015

作者： Li, Yuanyuan Guo, Xin Liu, Feifeng Beijing Key Laboratory of Embedded Real-Time Information Processing Technology Beijing Institute of Technology China Army Aviation Institute China

ISBN: (纸本)9781849199940

P-band space-based bistatic radar can globally detect and track moving targets with very strong penetration ability and has become an important research field in the radar community recently. This paper discusses the problems of the designing the P-band bistatic space-based radar such as the characteristics analysis of the target RCS, the antenna size analysis, the effect of ionosphere and the influence of sea clutter characteristics. The numerical results were used to verify the theoretical analysis.

关键词： Ionosphere

来源：评论

学校读者我要写书评

暂无评论

A Four-Bank Memory Design of Optimized Semi-Parallel Polar Decoder 9

A Four-Bank Memory Design of Optimized Semi-Parallel Polar D...

引用

2017 9th IEEE International Conference on Communication Software and Networks (ICCSN 2017)

作者： Shiwen Xing Yun-Nan Chang Liang Chen Beijing Key Laboratory of Embedded Real-time Information Processing Technology Beijing Institute of Technology Department of Computer Science and Engineering Sun Yat-sen University

ISBN: (纸本)9781509038237;9781509038220

Polar code, which is capable of achieving channel capacity, is known as a promising forward error correction（FEC） code in coding theory. In this paper, a four-bank memory architecture is proposed for polar decoder to store the initial and the intermediate processing data. Based on the proposed load-balance data allocation scheme, each memory bank is able to be equipped with only two access ports, while providing enough data bandwidth demand. Besides, the proposed semi-parallel successive cancellation（SC） polar decoder is optimized by employing the efficient p node and the merged computation of f and g nodes to reduce the decoding latency, which can at most get 62.5% speed improvement with enough processing elements（PEs）. In addition, the proposed four-bank memory design can reduce the overall size of memory especially with higher level of parallelism.

关键词： ploar code successive cancellation decoding fourbank memory design optimized semi-parallel design

来源：评论

学校读者我要写书评

暂无评论

An Efficient Transposition Method for Spaceborne SAR Data Based on HBM 2

An Efficient Transposition Method for Spaceborne SAR Data Ba...

引用

2nd IEEE International Conference on Signal, information and Data processing, ICSIDP 2024

作者： Li, Yongrui Lv, HuShan Xu, Ming Chen, Liang Yang, Zhu Xie, Yizhuang Beijing Institute of Technology Beijing Key Laboratory of Embedded Real-Time Information Processing Technology Radar Technology Research Institute Beijing China

ISBN: (纸本)9798331515669

The onboard real-time processing of Spaceborne synthetic aperture radar (SAR) is of great significance for the rapid acquisition of surface information. As a key step of SAR imaging processing, the efficiency of data transposition directly affects the imaging quality and processing speed. In order to solve the problem of traditional double data rate synchronous dynamic random-access memory (DDR SDRAM) limiting the transposition speed, this paper proposes a SAR data transposition method based on high bandwidth memory (HBM). The method makes full use of the high bandwidth and multichannel characteristics of HBM, and significantly improves the transposition speed by optimising the data read/write process, providing a new solution for real-time imaging processing of satellite-borne SAR. © 2024 IEEE.

关键词： Dynamic random access storage

来源：评论

学校读者我要写书评

暂无评论

Design of a large point FFT processor with configurable transform length

Design of a large point FFT processor with configurable tran...

引用

IET International Radar Conference 2015

作者： Xie, Yu Feng, Yang-Kai Yang, Chen Xie, Yi-Zhuang Chen, He Beijing Key Laboratory of Embedded Real-Time Information Processing Technology Beijing Institute of Technology Shanghai Institute of Satellite Engineering Beijing China

ISBN: (纸本)9781849199940

In this paper, a scheme of a large point FFT processor with configurable transform length is proposed. To achieve a pipelined structure, the proposed scheme is designed by Radix-2 decimation-in-frequency (DIF) FFT algorithm with Single-path Delay Feedback (SDF) architecture. A prototype is implemented on Xilinx Virtex-7 XC7VX690T FPGA, which can compute 16∼128K FFT at a speed as high as *** scheme is superior to existing technologies, due to its ability to process a continuous-flow input sequence and its prospect for real-time, configurable transform length applications.

关键词： Field programmable gate arrays (FPGA)

来源：评论

学校读者我要写书评

暂无评论

The method of multi-channel phased array radar squint SAR system design

The method of multi-channel phased array radar squint SAR sy...

引用

IET International Radar Conference 2015

作者： Cui, Lei Gao, Jing Wang, Zixiao Yao, Di Department of Electronic Engineering Beijing Institute of Technology Beijing China Beijing Key Laboratory of Embedded Real-Time Information Processing Technology China

ISBN: (纸本)9781849199940

Multi-channel phased array radar has the following advantages: detection multiple target, far work distance, antiinterference capability, and sensitive response, etc. The squint SAR (Synthetic Aperture Radar) is an effective means of detection in complex background in all-weather and all-day. Multi-channel phased array radar needs the consistency of amplitude and phase. The design of the system parameter should focus on the problem of spatial variability properties of PRF and resolution design. This paper introduces the composition analysis of multi-channel phased array radar, consistency of amplitude and phase, and the design of radar system parameters. The result of flight experimentation verifies the method of system design.

关键词： Systems analysis

来源：评论

学校读者我要写书评

暂无评论

Analysis of micro-motion feature in ISAR imaging via phase-derived velocity measurement technique

Analysis of micro-motion feature in ISAR imaging via phase-d...

引用

2017 IEEE Radar Conference, RadarConf 2017

作者： Guo, Liyong Fan, Huayu Liu, Quanhua Hu, Cheng Yang, Xiaopeng Beijing Key Laboratory of Embedded Real-time Information Processing Technology Radar Research Lab Beijing Institute of Technology Beijing100081 China

ISBN: (纸本)9781467388238

A novel ISAR (inverse synthetic aperture radar) motion compensation approach in conjunction with the phase-derived velocity measurement (PDVM) technique to extract micro-motion feature is presented in this paper. In order to obtain high quality ISAR image, the accurate velocity information provided by PDVM is utilized for target motion compensation. By analyzing proper amount of adjacent Doppler cells around the prominent scatterer in the ISAR image, the impact of other scatterers is effectively reduced for micro-motion extraction. Experiments based on radar measured data are performed to show the effectiveness of the proposed method. © 2017 IEEE.

关键词： Inverse synthetic aperture radar

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：