Hybrid modulation as beacon replacement in CubeSat picosatellites

Author

Vertat, I. ; Linhart, Richard ; Dudacek, L. ; Mejzr, J.

Author_Institution

Dept. of Appl. Electron. & Telecommun., Univ. of West Bohemia, Pilsen, Czech Republic

fYear

2013

fDate

16-17 April 2013

Firstpage

297

Lastpage

301

Abstract

At present a CW beacon with Morse code or OOK modulation is still commonly used in picosatellites (especially in CubeSats) for signaling that picosatellite is currently rising above the horizon and for limited telemetry transmission about picosatellite functionality. This transmission with limited EIRP could be replaced by proposing group of hybrid modulations DM-FSK/DQPSK and M-FSK/DQPSK with better performances. These modulations offer a better spectral and energy efficiency in comparison to OOK and also offer the possibilities of continual received signal quality evaluation. This is useful for modulation adaptation or switching in the main picosatellite radio transmission subsystem. The main advantages of conventional CW beacon (such as simple signal processing and good human audibility in the noisy channel) stay with using of proposed hybrid modulations, presented in this paper.

Keywords

frequency shift keying; phase shift keying; satellite communication; CubeSat picosatellite; DM-FSK-DQPSK hybrid modulation; beacon replacement; continuous wave beacon; modulation adaptation; picosatellite radio transmission subsystem switching; Bit error rate; Demodulation; Energy efficiency; Frequency shift keying; Phase shift keying; CubeSat; cw beacon; hybrid modulation; picosatellite;

fLanguage

English

Publisher

ieee

Conference_Titel

Radioelektronika (RADIOELEKTRONIKA), 2013 23rd International Conference

Conference_Location

Pardubice

Print_ISBN

978-1-4673-5516-2

Type

conf

DOI

10.1109/RadioElek.2013.6530935

Filename

6530935