Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Murthy, R. Debruin, J. |
| Copyright Year | 2010 |
| Description | Author affiliation: IJK Controls, LLC, Dallas, TX (Debruin, J.) || General Dynamics SATCOM Technologies, Richardson, TX (Murthy, R.) |
| Abstract | The U.S. Army and other purchasers of mobile SATCOM “on-the-move” (SOTM) antennas often acquired their first units as commercial-off-the-shelf items, developed by ambitious vendors in a “build it and they will buy it” environment. Initial evaluations were mostly qualitative (It worked well or it didn't), as many early users were completely satisfied to have this capability at all. Quantitative assessments were often limited to end-to-end data throughput rates. Information on pointing performance was especially difficult to ascertain, as test conditions were too complicated and non-repeatable to clearly isolate pointing performance from the many other error sources (terrain, driving speed, vehicle characteristics, weather, waveform, etc). Customers have steadily become more sophisticated, such that these antennas are now often purchased against detailed customer specifications which include specific requirements for the various aspects of pointing performance, such as stabilization, tracking, alignment, and cross-polarization. Determining and isolating antenna pointing performance from the other error sources listed above is part of FCC licensing under the Vehicle Mounted Earth Station (VMES) rules recently issued, which specifically limits pointing error. An approach for cumulative system-level qualification of pointing performance through a combination of analysis, simulation, and subsystem testing is outlined. An emphasis is placed on methodologies that can be executed in a controlled environment while minimizing use of specialized test equipment. A case study is presented to illustrate the method. |
| Starting Page | 1977 |
| Ending Page | 1982 |
| File Size | 180085 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781424481781 |
| ISSN | 21557586 |
| e-ISBN | 9781424481804 |
| DOI | 10.1109/MILCOM.2010.5680425 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-10-31 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Vehicles Testing Antennas Roads Antenna measurements Azimuth Satellites |
| Content Type | Text |
| Resource Type | Article |
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...
|