| | 419 | |
| | 420 | Generally we like to see that the Carrier-to-Noise plot for GPS should show about 2-3 satellites with an L1CA CN0 level around 50 dB-Hz. You can see the CN0 in the web user interface under ‘GNSS’ > ‘Satellites and Signals’. If you want to go deeper, you can log data and analyze the CN0 according to the guidelines here: [https://customersupport.septentrio.com/s/article/SBF-Analyzer-Carrier-to-Noise SBF Analyzer: Carrier to Noise]. |
| | 421 | |
| | 422 | [[Image(16160reception.jpg,400px)]] |
| | 423 | |
| | 424 | Another basic tool we encourage customers to use to investigate signal levels (and especially interference issues) is to monitor the receiver’s automatic gain control (AGC). AGC is shown in the ‘GNSS’ > ‘Spectrum’ > ‘Status’ page. The AGC should fall between 15 to 50 dB, and the closer to 15 dB (or lower) you go, the more power you're introducing to the receiver input. Thus if AGC is low it likely indicates the presence of interference. You can read more on AGC and the effect that interference will have on this output here: [https://customersupport.septentrio.com/s/article/SBF-Analyzer-Front-End-Gain SBF Analyzer - Front End Gain.] |
| | 425 | |
| | 426 | [[Image(16160spectrum.jpg,400px)]] |
