International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of最新文献_第7页

The Bering autonomous target detection 白令自主目标探测

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303918

J. Jørgensen, T. Denver, M. Betto, P. S. Jørgensen

引用次数: 9

A novel hyperspectral imaging system for small satellites 一种新型小卫星高光谱成像系统

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303923

M. Cutter, D. Lobb

{"title":"A novel hyperspectral imaging system for small satellites","authors":"M. Cutter, D. Lobb","doi":"10.1109/RAST.2003.1303923","DOIUrl":"https://doi.org/10.1109/RAST.2003.1303923","url":null,"abstract":"This paper describes a novel approach to hyperspectral imaging that is currently being implemented successfully on a small satellite. The instrument being flown is the Compact High Resolution Imaging Spectrometer (CHRIS) developed at Sira Electro-Optics Ltd. The instrument is flying on PROBA, a small agile satellite, which was launched in October 2001. The PROBA platform is flying in a Sun-synchronous polar orbit with an inclination of 97.89/spl deg/. The altitude of the platform varies over a range approximately from 553 to 688 km. The platform period is 96.8 min. The apogee of the orbit rotates around the Earth with an approximate 110 day periodicity. The main purpose of the instrument is to provide images of land areas. The platform provides pointing in both across-track and along-track directions, for target acquisition and multi-angle observations, particularly for measurement of the bi-directional reflectance distribution function (BRDF) properties of selected targets. One of the main novel features of this instrument is the provision of ground motion compensation during imaging in order to increase the integration time of the instrument, increasing the number of spectral bands that can be read and enhancing radiometric resolution. This also results in a smaller instrument, which is more compatible with small satellite dimensions.","PeriodicalId":272869,"journal":{"name":"International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of","volume":"11 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":"116822341","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: 0

Prediction of the space weather disturbances 空间天气扰动预测

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303895

D. Blagoveshchensky

引用次数: 0

Spacecraft attitude and rate estimation using sliding mode observers 利用滑模观测器估计航天器姿态和速率

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303901

K. Koprubasi, May-Win L. Thein

引用次数: 7

The Bering target tracking instrumentation 白令目标跟踪仪器

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303919

T. Denver, J. Jørgensen, M. Betto, P. S. Jorgensen

{"title":"The Bering target tracking instrumentation","authors":"T. Denver, J. Jørgensen, M. Betto, P. S. Jorgensen","doi":"10.1109/RAST.2003.1303919","DOIUrl":"https://doi.org/10.1109/RAST.2003.1303919","url":null,"abstract":"The key science instrument on the Bering satellite mission is a relative small telescope with an entrance aperture of 300 mm and a focal length between 500 and 1000 mm. The detection of potential targets is performed by one of the target scanning advanced stellar compasses (ASCs). This procedure results in a simple prioritized list of right ascension, declination, proper motion and intensity of each prospective target. The telescope itself has a dedicated ASC Camera Head Unit (CHU) mounted on the secondary mirror, largely co-aligned with the telescope. This CHU accurately determines the telescope's pointing direction. To achieve fast tracking over a large solid angle, the telescope pointing is achieved by means of a folding mirror in the optical pathway. When a prospective target approaches the telescope FOV, the ASC on the secondary will guide the folding mirror into position such that the target is inside the telescope FOV. During the telescope observation time, the ASC will constantly control the folding mirror to correctly position the target at the center of the telescope, basically performing a standard telescope tracking service. The telescope will alter the initial target acquisition track and observe the object of interest. To achieve milliarcsecond accuracy the telescope is equipped with a tip-tilt system on the secondary. The performance of the acquisition and telescope guidance has been tested and excellent noise, acquisition and settling time performance has been achieved. The operations have been verified for telescope focal lengths of 250 and 8000 mm.","PeriodicalId":272869,"journal":{"name":"International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of","volume":"31 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":"129424407","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: 7

BILSAT-1 communication subsystem 1通信子系统

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303896

O. Belce, A. Telli, K. Maynard

{"title":"BILSAT-1 communication subsystem","authors":"O. Belce, A. Telli, K. Maynard","doi":"10.1109/RAST.2003.1303896","DOIUrl":"https://doi.org/10.1109/RAST.2003.1303896","url":null,"abstract":"TUBITAK-BILTEN has initiated a project to develop and propagate small satellite technologies in Turkey. As part of this initiative, TUBITAK-BILTEN has worked with Surrey Satellite Technologies Limited (SSTL) to develop a 100 kg class enhanced microsatellite, BILSAT-1. With the successful completion of this project, TUBITAK-BILTEN will be capable of producing its own satellites, covering all phases from design to production and in-orbit operation. The project was started in August 2001 and BILSAT-1, was successfully launched from Plesetsk Cosmodrome, Russia, on 27 September 2003. In this paper the communication subsystem of BILSAT-1 is presented. The primary uplink is the S-band receivers and the primary downlink is the S-band transmitters on-board BILSAT-1, whereas VHF and UHF systems are also present as back-up for uplink and downlink respectively. UHF/VHF system is currently being used for commissioning phase due to omni-directional coverage requirements. S-band being the nominal operation system has relative directionality. The data rate of uplink is 9.6 kbps for both S-band and VHF. However, S-band is capable of 2 Mbps and UHF has 9.6 kbps, 38.4 kbps and 76.8 kbps opportunities for downlink.","PeriodicalId":272869,"journal":{"name":"International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of","volume":"1 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":"117096582","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: 7

Solar thermal upper stages 太阳能热上级

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303922

M. Calabro

引用次数: 2

Triboparameters of new antifrictional materials under dry friction vacuum conditions for space application 空间应用干摩擦真空条件下新型减摩材料的摩擦参数

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303980

Y. Simeonova

引用次数: 1

A ground station control software application 一个地面站控制应用软件

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303903

E. Çelik

引用次数: 1

Post-launch geometric calibration of linear array imaging system 线阵成像系统发射后的几何校正

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI: 10.1109/RAST.2003.1303930

Guoqing Zhou, O. Baysal

{"title":"Post-launch geometric calibration of linear array imaging system","authors":"Guoqing Zhou, O. Baysal","doi":"10.1109/RAST.2003.1303930","DOIUrl":"https://doi.org/10.1109/RAST.2003.1303930","url":null,"abstract":"Presents a mathematical model of post-launch geometric calibration for linear array imaging systems. This developed model is based on multilens multi-array detector cameras for interior and exterior orientation parameter calibration. Corresponding software has been developed. We evaluated the model and system using the first threefold, along-track stereoscopic MOMS-2P/Priroda imagery, taken from the 390-km orbit of the Mir space station, of a 50 km by 105 km patch covering a portion of Southern Germany. A real accuracy of RMS 15.3 m (0.8 pixel) for x, RMS 8.9 m (0.5 pixel) for y in planimetry and RMS 18.0 m (0.9 pixel) in height was achieved as verified by 24 independent checkpoints distributed over the test field which contained open, forested, and urban areas. We also used a data set acquired by the HRSC from the German Aerospace Research Establishment (DLR) to evaluate our software. The exterior accuracy for this data set was as low as RMS 0.15 m (1.5 pixel) for x, RMS 0.073 m (0.7 pixel) for y and RMS 0.18 m (1.8 pixel) in height. These experimental results demonstrated that our model is applicable for both single- and multi-lens multi-array sensor cameras.","PeriodicalId":272869,"journal":{"name":"International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of","volume":"1 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":"129323519","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: 0