Formation Flying - T.Sugano FCS and COMM FCS – Flight Control System COMM – Communications (camera is assumed to be part of COMM) Satellite needs to handle both FCS and COMM systems Use of COTS (Consumer Off-the-Shelf) computer(s) aimed COMM utilizes a low-cost COTS transceiver radio

Formation Flying - T.Sugano CPU selection for the Nanosat Arcom VIPER 400 MHz CPU recommended VIPER is suitable because of its - Light weight, 96 grams - Operable temperature range, -40 C to + 85 C - Windows Embedded feature, easy to program - Computation speed, 400 MHz - Memory capacity, up to 64MB of SDRAM - Embedded audio I/O, necessary for COMM with voice radio Redundancy can be implemented.

Formation Flying - T.Sugano Arcom VIPER 400 MHz embedded controller

Formation Flying - T.Sugano Radio selection for the Nanosat Kenwood Free Talk XL 2W transceiver recommended Kenwood Free Talk XL is suitable because of its - COTS nature, low cost - 2W of transmission power, more than enough for non-obstructed space communication, but higher wattage than FRS 500 mW radio - Ability to use both GMRS and FRS frequencies - FRS frequencies recommended because by international treaty FRS (Family walkie talkie) is restricted to 500 mW mW is too weak to penetrate into space - MilSpec cetified

Formation Flying - T.Sugano Kenwood Free Talk XL 2W FRS/GMRS Transceiver 15 UHF channels (7 FRS and 8 GMRS) 2W output for both categories DC 7.2 V (600mAh) Circuit board weighs only 60 grams Speaker/Microphone/Encapsulation Removed

Formation Flying - T.Sugano Scheme of FCS/COMM Integration

Formation Flying - T.Sugano Detailed Scheme of integration