Presentation Information
[B-3-11]Narrow Multi-Beam Formation Technology for Frequency Sharing between Low Earth Orbit Satellites and Ground Terminals
-Evalution of Radiation Characteristic Degradation Due to Positionnig Errors in Non-Wired Phased Array Antennas-
◎So Ema1, Genma Hattori1, Yuta Horie1, Takashi Takahashi2, Takuya Okura2, Hiroyuki Tsuji2, Tengis Buyantogtokh3, Akihito Hiromori3, Akira Uchiyama3, Hirozumi Yamaguchi3, Sumio Morioka4, Takahiro Inagawa4 (1. Microwave Factory Co.,Ltd., 2. National Institute of Information and Communications Technology, 3. The University of Osaka, 4. Interstellar Technologies Inc.)
Keywords:
NTN,Satellite Communication,Formation Flying,Phased Array Antenna
Next-generation communication systems are expected to use non-terrestrial networks (NTN) to extend coverage and provide stable communication in the event of disasters. Therefore, we are investigating the use of low-orbit formation flying to construct a group of satellites as a large-aperture, high-gain phased array antenna (PAA). While we are considering controlling the attitude of each microsatellite in this non-wired PAA using electromagnets, this approach results in positioning and angular alignment errors (6DoF errors). In this paper, we evaluated the degradation in gain and axis ratio under conditions of a standard deviation of 10 mm for XYZ-axis position errors and a standard deviation of 5 deg. for roll, pitch, and yaw angle errors, using a simplified directional synthesis method involving 1,000 Monte Carlo simulations.