Research Article
FFT Splitting for Improved FPGA-Based Acquisition of GNSS Signals
Table 1
Range of applicability of the different solutions.
| Solution | FFT length | Sampling frequency range | Sampling frequency range | for L5, E5a, and E5b signals | for the E1 signal |
| 3-FFT solution |
65 536 | 20.46 MHz–32.768 MHz | 6.138 MHz–8.192 MHz | 5-FFT solution |
32 768 | 20.46 MHz–21.846 MHz | 5.4615 MHz | 9-FFT solution |
16 384 | 20.46 MHz–24.576 MHz | 6.138 MHz–6.144 MHz | 15-FFT solution | 8192 | 20.46 MHz–20.480 MHz | 5.120 MHz |
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A indicates that there is a loss due to a higher code step during the acquisition.
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