Proceedings of the Korean Institute of Navigation and Port Research Conference (한국항해항만학회:학술대회논문집)
- Volume 2
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- Pages.395-398
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- 2006
A Highly Efficient and Fast Algorithm for Implementing a Real-Time Software GNSS Receiver
- Im, Sung-Hyuck (A Department of Electronics Engineering, Konkuk Univ.) ;
- Jee, Gyu-In (A Department of Electronics Engineering, Konkuk Univ.) ;
- Kim, Hak-Sun (Samsung Electro-Mechanics) ;
- Cho, Sang-Do (Samsung Electro-Mechanics) ;
- Ko, Sun-Jun (Samsung Electro-Mechanics)
- Published : 2006.10.18
Abstract
In this paper, for implementing a real-time software GNSS receiver we propose the highly efficient and fast algorithms such as partial down-conversion, phase rotator, composite I&Q accumulation, Virtual DCO technique, and parallel acquisition using FFT. When the proposed algorithms are used, more 30 tracking channels with 3 tracking arm(early-prompt-late) is operated real-time on Intel 2.8GHz personal computer. Also, the partial down-conversion reduces the FFT size, for parallel acquisition, to 1/8 of conventional FFT-size and the program size includes map is not exceed 1Mbyte. Finally, the proposed real-time software GNSS receiver using the proposed algorithms provides the navigation solution with below 10 meter rms error.