International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of最新文献_第10页

AM-AM and AM-PM distortion characterization of satellite transponders/base station transmitters using spectrum measurements 利用频谱测量卫星转发器/基站发射机的AM-AM和AM-PM失真特性

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303897

F. Ghannouchi, A. Ghazel

引用次数: 1

Extraction of high reflectance regions from a SAR image 从SAR图像中提取高反射率区域

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303997

C. Erbas, S. Kent

引用次数: 0

A new iterative technique for image restoration of ERS-2 raw data 一种新的ERS-2原始数据图像恢复迭代技术

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303397

C. Erbas, S. Kent

引用次数: 2

The ZASat satellite programme innovation and application ZASat卫星方案创新与应用

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303890

S. Mostert, G. W. Milne, H. Steyn, A. Schoonwinkel

引用次数: 3

Onboard autonomy and fault protection concept of the BIRD satellite BIRD卫星的机载自主和故障保护概念

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303387

H. Kayal, W. Barwald, K. Brieß, E. Gill, W. Halle, O. Montenbruck, S. Montenegro, R. Sandau, T. Terzibaschian

{"title":"Onboard autonomy and fault protection concept of the BIRD satellite","authors":"H. Kayal, W. Barwald, K. Brieß, E. Gill, W. Halle, O. Montenbruck, S. Montenegro, R. Sandau, T. Terzibaschian","doi":"10.1109/RAST.2003.1303387","DOIUrl":"https://doi.org/10.1109/RAST.2003.1303387","url":null,"abstract":"BIRD (Bi-Spectral Infra-Red Detection) has been demonstrating new technologies since its launch on 22. October, 2001 with the PSLV-C3 from Shar/India successfully into a sun-synchronous low Earth orbit at 560 km. Besides the successful in-orbit test of the detection and evaluation of vegetation fires with micro satellites, BIRD has also been demonstrating a number of advanced spacecraft bus technologies, especially in the field of satellite autonomy and fault detection and protection. A number of ingenious features make it possible to operate the 92 kg satellite in a comfortable and safely way. Special features include the autonomous management of onboard computer failures, surveillance and response to critical parameters limit exceeding, system attitude anomalies. A robust redundancy philosophy and optimised ground-spacecraft interaction concept has contributed to the success of the BIRD mission, which was designed to operate for one year and has completed now its second year of operation. The paper describes the related new technologies and the results from the experience with BIRD.","PeriodicalId":272869,"journal":{"name":"International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114666200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Ground-based diagnostics of the electromagnetic environment of solar activity and natural disasters 太阳活动和自然灾害电磁环境的地基诊断

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303968

B. Boytchev, P. Nenovski

引用次数: 2

Channel equalization and noise reduction based on turbo codes 基于turbo码的信道均衡和降噪

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303993

K. Buyukatak, E. Gose, O. Ucan, S. Kent, O. Osman

{"title":"Channel equalization and noise reduction based on turbo codes","authors":"K. Buyukatak, E. Gose, O. Ucan, S. Kent, O. Osman","doi":"10.1109/RAST.2003.1303993","DOIUrl":"https://doi.org/10.1109/RAST.2003.1303993","url":null,"abstract":"A new class of error control coding with binary parallel concatenated recursive systematic convolutional codes-turbo codes- and its an application over SAR (Synthetic Aperture Radar) image transmitting is presented in this paper. The remarkable coding gains achieved by turbo code have a great influence in various areas of digital communication, including cellular mobile, deep space communications and satellite communication. The basic idea is that two or more a posteriori probability decoders exchange soft information. One of the decoders calculates the a posteriori probability distribution of the information sequence and passes that information to the next decoder. The new decoder uses this information and computes its own version of the probability distribution. This exchange of information is called an iteration. After a certain number of iterations, a decision is made at the second decoder. For each iteration, the probability that we decode in favour of the correct decision will improve. At the last iteration, the hard decision is made using the soft decision of the last decoder.","PeriodicalId":272869,"journal":{"name":"International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125285754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Development of GPS aided INS via Federated Kalman filter 基于联邦卡尔曼滤波的GPS辅助惯性导航系统的研制

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303978

C. Hajiyev, M. A. Tutucu

引用次数: 5

Autonomous navigation for planetary exploration by a mobile robot 行星探测移动机器人自主导航

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303949

L. Yenilmez, H. Temeltas

引用次数: 12

The study of real-timed GPS navigation accuracy during approach and landing of an ultralight vehicle 超轻型飞行器进近与着陆时实时GPS导航精度研究

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303946

F. Hsiao, Shih-Hsien Huang, Meng-Tse Lee

引用次数: 6