Title :
Space Shuttle UHF communications performance evaluation
Author :
Hwu, S.U. ; Loh, Y.C. ; Dobbins, J.A. ; Kroll, S.D. ; Sham, C.C.
Author_Institution :
Lockheed Martin Space Operations, Houston, TX, USA
Abstract :
Computational investigations and experimental measurements were performed to evaluate the Space Shuttle UHF communication system performance for payload bay antenna at the proposed new location. To insure adequate communication coverage at relocated new location, the link margin for the Extravehicular Activity (EVA) astronauts and between Space Shuttle Orbiter and International Space Station (SSO-ISS) during rendezvous were analyzed. The multipath effects from the vehicle structures surrounding the antenna were investigated. The Radio Frequency (RF) electromagnetic radiation to the Orbiter Docking System (ODS) pyrotechnics was also analyzed to ensure the EMC/EMI compliances.
Keywords :
UHF antennas; electromagnetic compatibility; radiofrequency interference; satellite communication; space vehicles; EMC; EMI; EVA astronauts; ODS; RF electromagnetic radiation; SSO-ISS; Space Shuttle Orbiter; UHF communication system; extravehicular activity astronauts; multipath effects; orbiter docking system; payload bay antenna; performance evaluation; radio frequency electromagnetic radiation; Antenna measurements; Extraterrestrial measurements; Payloads; Performance evaluation; Radio frequency; Space shuttles; System performance; UHF antennas; UHF communication; UHF measurements;
Journal_Title :
Aerospace and Electronic Systems Magazine, IEEE
DOI :
10.1109/MAES.2005.1581094
