Please wait, while we are loading the content...
| Content Provider | IET Digital Library |
|---|---|
| Author | Ning, Yu Bai, Xue ru Zhou, Feng Liu, Lei |
| Abstract | Due to the rapid spinning of space debris, its radar echoes have serious migration through range cells and highly non-stationary, time-varying Doppler. With low pulse repetition frequency (PRF) and data missing, conventional joint time–frequency imaging methods such as the Wigner–Ville distribution and the short-time Fourier transform cannot obtain well-focused image. To tackle this problem, this study proposes a novel method for inverse synthetic aperture radar imaging of rapidly spinning space debris using the improved genetic algorithm (GA). Firstly, the authors derive the analytic model of the scattering centres and convert the imaging problem to a parametric optimisation problem. Then, an improved GA method combined with the CLEAN technique is introduced to estimate the model parameters and construct the range and cross-range history of each scattering centre. Finally, high-resolution images at different time instants are obtained. Simulation results have shown that the proposed method achieves high resolution with low computational burden, and it is robust to low PRF and data missing. |
| Starting Page | 812 |
| Ending Page | 821 |
| Page Count | 10 |
| ISSN | 17518784 |
| Volume Number | 11 |
| e-ISSN | 17518792 |
| Issue Number | Issue 5, May (2017) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rsn/11/5 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2016.0048 |
| Journal | IET Radar, Sonar & Navigation |
| Publisher Date | 2017-01-03 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | CLEAN Technique Cross-range History Fourier Transform Fourier Transforms Genetic Algorithm Image Resolution Integral Transforms Inverse Synthetic Aperture Radar Imaging Inverse Synthetic Aperture Radar Imaging Method Joint Time-frequency Imaging Method Optical, Image And Video Signal Processing Optimisation Technique Parametric Optimisation Problem PRF Pulse Repetition Frequency Radar Cross Section Radar Echoes Radar Equipment Radar Imaging Scattering Centre Space Debris Synthetic Aperture Radar System And Application Time-varying Doppler |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|