UTM coordinates: zones, hemispheres and common export mistakes
A UTM easting and northing need the correct zone, hemisphere and datum.
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174 practical articles on satellite positioning, RTK corrections, survey procedures and reliable geospatial data.
145–156 of 174 articles
Page 13 of 15
Coordinate reference systems and datums for GNSS surveys
Coordinates need a reference frame, units and height definition to be interpreted correctly.
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Cycle slips: what interrupted phase tracking can change
Loss of continuous carrier-phase tracking can require ambiguities to be resolved again.
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Tropospheric delay and GNSS height measurements
The lower atmosphere affects GNSS signals, and height estimation needs careful modeling and field checks.
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The ionosphere and GNSS: why conditions can change
The ionosphere affects radio-signal propagation and can change the behavior of precise positioning.
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Satellite count and signal quality: what to check together
A larger satellite count can help availability, but useful observations must also be healthy and well distributed.
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DOP and satellite geometry: reading the quality indicators
Dilution of precision describes how observation geometry affects the position solution.
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GNSS near buildings: working in an urban canyon
Tall structures can limit satellite visibility and introduce reflections at the same time.
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GNSS under tree canopy: planning around signal obstruction
Trees can block or weaken signals and reduce the continuity needed for precise phase measurements.
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Multipath: when GNSS signals take an indirect route
Buildings, metal surfaces and other reflectors can distort the observations a receiver uses.
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RTK will not fix: a practical troubleshooting order
Check the setup, correction flow and observations before repeatedly restarting equipment.
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Baseline length: why distance from the reference matters
As the rover moves away from a reference station, some shared error assumptions become less effective.
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