X-ray-based positioning method for mars entry blackout mitigation. (February 2021)

• Record Type: Journal Article
• Authors: Dang, Peng; Tang, Xiaobin; Liu, Yunpeng; Mu, Junxu; Lai, Sheng
• Is Part Of: Applied radiation and isotopes. Volume 168(2021)
• Publication Date: 2021-02
• Subjects: X-ray signal -- Mars entry blackout -- Positioning method -- Plasma sheath -- Martian atmosphere; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2020.109518
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: Enhancing the positional information acquisition during Mars entry blackout improves the Mars landing mission reliability. A positioning method based on the high-penetration of X-rays was developed to solve the problem. The X-ray signal attenuation was estimated. The positioning performance and the influence of X-ray signal transmission system were also evaluated. Results indicated that the X-ray signal attenuation is extremely low, and the X-ray-based method is expected to be a potential application for obtaining high-precision positional information during Mars entry blackout. Highlights: X-rays demonstrate high penetration in the plasma sheath and Martian atmosphere. The X-ray-based scheme shows good positioning performance in Mars entry blackout. Improving X-ray signal transmission system performance helps to reduce the error.