GNSS Map

Connected Satellites

  • satellite icon GPS PRN 32 | SNR: 31 | Elevation: 81° | Azimuth: 302°
  • satellite icon SBAS PRN 131 | SNR: 43 | Elevation: 51° | Azimuth: 189°
  • satellite icon SBAS PRN 133 | SNR: 45 | Elevation: 47° | Azimuth: 209°
  • satellite icon GPS PRN 7 | SNR: 34 | Elevation: 11° | Azimuth: 227°
  • satellite icon GPS PRN 8 | SNR: 43 | Elevation: 62° | Azimuth: 233°
  • satellite icon GPS PRN 13 | SNR: 24 | Elevation: 39° | Azimuth: 320°
  • satellite icon GPS PRN 15 | SNR: 32 | Elevation: 83° | Azimuth: 113°
  • satellite icon Unknown PRN 34 | SNR: 41 | Elevation: 30° | Azimuth: 136°
  • satellite icon GPS PRN 22 | SNR: 20 | Elevation: 41° | Azimuth: 277°
  • satellite icon GPS PRN 29 | SNR: 49 | Elevation: 24° | Azimuth: 174°
  • satellite icon GPS PRN 4 | SNR: 32 | Elevation: 32° | Azimuth: 263°
  • satellite icon GPS PRN 13 | SNR: 42 | Elevation: 8° | Azimuth: 110°
  • satellite icon GPS PRN 17 | SNR: 38 | Elevation: 43° | Azimuth: 173°

Understanding Satellites

Satellite Names: Identifiers like "GPS PRN 25" refer to specific satellites in the GNSS constellation.

Who Operates GNSS Satellites: Different countries and organizations operate GNSS satellites. For example, the United States operates GPS satellites, Europe manages Galileo, Russia runs GLONASS, and China operates BeiDou. These global networks work together to provide worldwide positioning services.

Signal to Noise Ratio (SNR): - Good: SNR > 30 dB - Moderate: 20 dB ≤ SNR ≤ 30 dB - Poor: SNR < 20 dB Higher SNR means stronger, clearer satellite signals.

GNSS Statistics

  • Device ID: pi1 (Unique ID of the GNSS device)
  • Latitude: 33.4546738 (North-South position on Earth)
  • Longitude: -112.0689692 (East-West position on Earth)
  • Altitude (m): 342509 (Height above sea level)
  • Speed (m/s): 43 (Ground speed of the device)
  • Fix Time: 2025-06-01T00:24:07Z (Timestamp when the position was fixed)
  • Accuracy EPX (m): 2061 (Estimated horizontal position error in X direction)
  • Accuracy EPY (m): 2061 (Estimated horizontal position error in Y direction)
  • Accuracy EPV (m): 2016 (Estimated vertical position error)
  • gDOP: 1.61 (Geometric Dilution of Precision)
  • pDOP: 1.39 (Position Dilution of Precision)
  • vDOP: 1.07 (Vertical Dilution of Precision)
  • hDOP: 0.87 (Horizontal Dilution of Precision)
  • tDOP: 0.83 (Time Dilution of Precision)
  • nDOP: 0.7 (Northing Dilution of Precision)
  • eDOP: 0.52 (Easting Dilution of Precision)

Understanding GNSS Metrics

Accuracy (EPX, EPY, EPV): Lower values (under 5 meters) are better. High values suggest poor signal quality.

Dilution of Precision (DOP): - Good: DOP < 2 (Ideal) - Moderate: 2 ≤ DOP ≤ 5 - Poor: DOP > 5. Lower DOP indicates better geometric positioning.

Speed: Reflects the GNSS device's ground speed in meters per second. 0 m/s indicates stationary.