Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Telli, A. Es, A. |
| Copyright Year | 2006 |
| Description | Author affiliation: Inf. Technol. & Electron. Res. Inst., Sci. & Technol. Res. Council of Turkey,, Ankara (Telli, A.; Es, A.) |
| Abstract | BILSAT-1, a 130 kg micro satellite, is Turkey's first low Earth orbit Earth (LEO) observation satellite. The project was started in August 2001 at Surrey Satellite Technologies Limited (SSTL)'s facilities in Guildford, UK and BILSAT-1 was launched successfully from Plesetsk Cosmodrome, Russia in 27 September 2003. The main objective of the mission is remote sensing. The communications subsystem is a core system for Earth observation satellite. It is generally used for telemetry/telecommand signaling, software uploading and image/data transfer. The BILSAT-1 communications subsystem is composed of VHF/UHF (amateur space band) and S-Band (commercial space band). Link analysis is essential for design of any satellite communications subsystem to observe the quality of the link. The link budget should be calculated; the positive link margin has to be guaranteed at all elevation angles that the proposed design requires before the actual manufacturing process starts. For BILSAT-1 communications subsystem, the link budget calculator program has been developed at pre-design phase. The program calculates the received Eb/No and the required Eb/No, and gives the difference as the link margin with respect to the elevation angles. The communications subsystem parameters such as RF output power, antenna size/type, power consumption etc. both at ground station and on board have been optimized according to the simulated links. These parameters ultimately effects overall project cost and time schedule. Also, to aid pre-launch/in-orbit test and to observe in-orbit link quality, some status points have been made available at BILSAT-1 satellite telemetry system. The measurements include a received signal strength indicator (RSSI) that provides an indication of the total signal power received. By using this data, the reliability of the link budget calculator program can be verified. In this paper, the above-mentioned link budget calculator program will be presented and the calculated and the actual link margins will be given and compared |
| Sponsorship | Aerospace and Electron. Syst. Soc |
| File Size | 1050010 |
| File Format | |
| ISBN | 078039545X |
| DOI | 10.1109/AERO.2006.1655854 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2006-03-04 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Low earth orbit satellites Telemetry Remote sensing Artificial satellites Telecommunications Satellite communication Manufacturing processes Radio frequency Power generation Energy consumption |
| 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...
|