Title :
Wireless Video System for extra vehicular activity in the International Space Station and Space Shuttle orbiter environment
Author :
Loh, Yin C. ; Boster, John ; Hwu, Shian ; Watson, John ; de Silva, Kim
Author_Institution :
Eng. Anal. & Simulation Dept., Lockheed Martin Space Oper., Houston, TX, USA
Abstract :
The Wireless Video System (WVS) provides real-time video coverage of astronaut extra vehicular activities during International Space Station (ISS) assembly. The ISS wireless environment is unique due to the nature of the ISS structure and multiple RF interference sources. This paper describes how the system was developed to combat multipath, blockage, and interference using an automatic antenna switching system. Critical to system performance is the selection of receiver antenna installation locations determined using uniform geometrical theory of diffraction (GTD) techniques
Keywords :
geometrical theory of diffraction; microstrip antenna arrays; multipath channels; radiofrequency interference; radiowave propagation; receiving antennas; satellite antennas; transmitting antennas; visual communication; GTD techniques; ISS wireless environment; International Space Station; RF interference sources; Space Shuttle orbiter environment; Wireless Video System; automatic antenna switching system; blockage; extra vehicular activity; multipath; real-time video coverage; receiver antenna installation location; system performance; uniform geometrical theory of diffraction; Assembly systems; Cameras; International Space Station; Payloads; Radio transmitters; Receiving antennas; Space shuttles; Space stations; System performance; Telemetry;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.780538
