GNSS for Surveyors
GNSS fundamentals, signal structure, error sources, survey methods (static, RTK, PPK), equipment selection, and post-processing.
6 articles
GNSS Fundamentals
How satellite positioning works, the major constellations (GPS, GLONASS, Galileo, BeiDou), positioning concepts, and coordinate reference frames.
Signal Structure & Observables
GPS signal structure, carrier waves, PRN codes, the two fundamental observables (pseudorange and carrier phase), and modernized multi-constellation signals.
Error Sources
Satellite, atmospheric, receiver, and site-dependent errors in GNSS positioning, with magnitudes, mitigation strategies, and error budgets.
Survey Methods (Static/RTK/PPK)
GNSS survey methods including static, rapid-static, RTK, PPK, Network RTK, and PPP -- when to use each, accuracy, and practical considerations.
Equipment & Mission Planning
GNSS receiver types, antenna considerations, mission planning, satellite availability, site selection, and observation logistics for land surveyors.
Post-Processing & QC
Baseline processing workflow, ephemeris selection, ambiguity resolution, network adjustment, quality indicators, and deliverable documentation.