Study of Toutatis Imaging Illumination and Integrity Based on Chang-E II Flyby Navigation Relation

Sie sind hier: Homepage > Suche

Study of Toutatis Imaging Illumination and Integrity Based on Chang-E II Flyby Navigation Relation

Bu, Yanlong / Tang, Geshi / Yang, Cheng / Liu, Ye / Xia, Jinchao / Liu, Chuankai / Wang, Baofeng / Miao, Ping

On December 13, 2012, China's Chang'E II spacecraft successfully flew by the asteroid Toutatis, and obtained a series of clear optical images on Toutatis surface, which is China's first asteroid detection and also human's first close optical exploration on the asteroid. These optical images are of great benefit to build an accurate model of Toutatis surface, and to analyze physical properties of the asteroid. However, due to the acquired optical images can only reveal a partial surface of Toutatis, meanwhile influenced by light, one cannot visually determine whether the optical images reveal a complete side of Toutatis or not, in other words, how much part of the side was not photographed because of light shadows. In the paper, based on the Chang-E II flew over strategy, combined with the spacecraft's orbit, attitude and other navigation information, and through photographic measurement method, the angle between the direction of the sun light and the line of sight of Toutatis's surface feature points was accurately calculated, namely irradiation angle. Through precise calculation, irradiation angles of Toutatis surface feature points are 36.8-39.0, and furtherly, with the help of a pose simulation of a radar-observing-based shape model by NASA, we can get one important conclusion, that is during the fly by, the space borne optical camera got complete imaging for one side of Toutatis's surface, and there is no wide shadow on the images.

Zugriff

Zugriff über TIB

Verfügbarkeit in meiner Bibliothek prüfen

Bestellung bei Subito €

Exportieren, teilen und zitieren

Dokumentinformationen

Titel :

Study of Toutatis Imaging Illumination and Integrity Based on Chang-E II Flyby Navigation Relation

Beteiligte:

Bu, Yanlong (Autor:in) / Tang, Geshi (Autor:in) / Yang, Cheng (Autor:in) / Liu, Ye (Autor:in) / Xia, Jinchao (Autor:in) / Liu, Chuankai (Autor:in) / Wang, Baofeng (Autor:in) / Miao, Ping (Autor:in)

Erschienen in:

CSNC, China Satellite Navigation Conference, 5 ; 711-720

Lecture Notes in Electrical Engineering ; 305

Erscheinungsdatum :

2014

Format / Umfang :

10 Seiten

ISBN :

978-3-642-54740-9 , 978-3-642-54739-3

ISSN :

1876-1100

DOI :