Table 1 Configuration Parameters of Experimental and Simulation Tests.
From: A sub-μs accuracy GPS alternative using electrical transmission grids as precision timing networks
Parameter | Experimental | Simulation |
|---|---|---|
Fclk (GPS disciplined) | 10.485760 MHz | 10 MHz |
Slow time pulse (GPS disciplined) | 1 Hz | n/a |
Oversampling factor (s) | 32 | 100 |
Spreading factor | 10 | 13 |
Base samples per chirp (2\(^{SF}\)) | 1024 | 8192 |
Oversampled samples per chirp (\(s \cdot\)2\(^{SF}\)) | 32,768 | 819,200 |
LoRa bandwidth | 327.680 kHz | 100 kHz |
Carrier frequency | 1.25 MHz | 170 kHz |
Chirp period | 3.125 ms | 81.92 ms |
Correlations per chirp | 32,768 | 819,200 |
Resolution | 95.367 ns | 100 ns |
