Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Hakan Kayal"'
Publikováno v:
Aerospace, Vol 6, Iss 10, p 105 (2019)
The correct behavior of spacecraft components is the foundation of unhindered mission operation. However, no technical system is free of wear and degradation. A malfunction of one single component might significantly alter the behavior of the whole s
Externí odkaz:
https://doaj.org/article/cad2aaa397f24fb08b6d936ea5979c1a
Publikováno v:
Journal of Guidance, Control, and Dynamics. 43:1671-1687
Optimal orbit determination requires physics-based process noise matrices to be taken into account when performing covariance propagation. For gravity errors of omission (potential field truncation...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82f572789e5be497151b615376d3c5d0
https://doi.org/10.2514/1.g004918
https://doi.org/10.2514/1.g004918
Publikováno v:
Advances in Space Research. 65:251-270
Errors in neutral atmospheric density are the dominant contributor to unrealistic orbital state-vector covariances in low Earth orbits (LEO). Density uncertainty is caused by model-uncertainty at spatial scales below and within the model resolution,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f99f1f90b54277e6c09ebffb57ddd98c
https://doi.org/10.1016/j.asr.2019.08.023
https://doi.org/10.1016/j.asr.2019.08.023
Publikováno v:
Advances in Space Research. 65:407-418
Accurate knowledge of the orbital state-vector uncertainty is required for the computation of reliable collision probabilities, the association of tracks, as well as the optimal planning of sensor resources. In low Earth Orbits (LEO) neutral atmosphe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1bad5f05b74489773f9f46a38418c71
https://doi.org/10.1016/j.asr.2019.10.013
https://doi.org/10.1016/j.asr.2019.10.013
Autor:
Hakan Kayal
Publikováno v:
Expedition ins Sternenmeer ISBN: 9783662637296
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3abedff4efcb53f19dcdf4e82caf4fd0
https://doi.org/10.1007/978-3-662-63730-2_10
https://doi.org/10.1007/978-3-662-63730-2_10
Publikováno v:
Advances in Space Research. 63:3936-3952
The call for realistic covariances/uncertainties in orbit determination/estimation and propagation is becoming louder. The main reason for unrealistic uncertainties is, in most cases, a disregard of force model uncertainties, i.e. the calculated cova
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e7b42214ac160dac3353715c2f3b000
https://doi.org/10.1016/j.asr.2019.02.040
https://doi.org/10.1016/j.asr.2019.02.040
Publikováno v:
Advances in Space Research. 63:3916-3935
Density uncertainty is the major driver of unrealistic covariances for objects in low Earth orbits. The analytic propagation of uncertainties in the neutral atmospheric density to resulting uncertainties in the orbital position and velocity has only
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f22b22a7c7bdef6521ad17c2bb555b14
https://doi.org/10.1016/j.asr.2019.02.039
https://doi.org/10.1016/j.asr.2019.02.039
Publikováno v:
CEAS Space Journal. 11:255-268
In the last two decades all major space agencies have established processes for operational conjunction analysis (CA) and collision avoidance (COLA). This work highlights the approaches of ESA, DLR, JAXA, NASA, CNES, and CSA. It is found that commerc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::791b9c6f693ce37d200027a3cbbc97e0
https://doi.org/10.1007/s12567-019-00242-2
https://doi.org/10.1007/s12567-019-00242-2
Autor:
Harald Wojtkowiak, Oleksii Balagurin, Dietmar Seipel, Gerhard Fellinger, Frank Puppe, Alexander Schneider, Tobias Schwarz, Kirill Djebko, Saliha Serdar, Hakan Kayal
Publikováno v:
2018 SpaceOps Conference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a8a609cc2b285dcfd85fb49b5ef7ab0
https://doi.org/10.2514/6.2018-2690
https://doi.org/10.2514/6.2018-2690
Autor:
Tobias Schwarz, Oleksii Balagurin, Frank Puppe, Ana Vodopivec, Harald Wojtkowiak, Hakan Kayal, Andreas Schartel, Kirill Djebko, Gerhard Fellinger
Publikováno v:
AIAA SPACE 2016.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55bc3f22857f8a7a93fc07ffb6500f7c
https://doi.org/10.2514/6.2016-5300
https://doi.org/10.2514/6.2016-5300