| dc.description.abstract |
The purpose of this paper is to develop the RF transceiver which use for the cubic satellite. The RF transceiver is used UHF 433MHz for its base frequency, and the whole system is designed to be modularized.
The system planning mentioned in this paper includes can setting the base frequency, the digital modulation mode, the radio baud rate, the power amplifier enable/disable, and the low noise amplifier enable/disable. Design the system of automatic packing, automatic unpacking, automatic forwarding, time-sharing, filter out duplicate packets. And realization the hardware circuit design, function block, state machine. To achieve RF transceiver for cube satellite Constellation.
The RF transceiver uses COTS components. When the RF transceiver transmit with a Yagi-Uda antenna, and receive with a self-made UHF dipole antenna. The actual radio transmission distance can up to 44 km. And implement the reliability of the satellite constellation communication function. Including automatic forwarding, time-sharing, filter out the duplicate packet. Finally, according to the results to discuss its shortcomings, and fine the improve method. | en_US |