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GNSS Positioning and Survey Control for Drone Mapping
Course Introduction
Welcome To The Course (2:32)
About Your Instructor (1:08)
Getting Your GNSS Positioning and Survey Control for Drone Mapping Certificate and Digital Badge (4:07)
Course Textbook
Intro To Survey Control
What is “Survey Control” and Why it Matters for Drone Mapping (4:25)
Overview of the Survey Control Process (5:10)
Accuracy vs. Precision (2:40)
Absolute vs. Relative Accuracy (4:12)
GCPs vs. Checkshots (2:51)
Satellites and Signal Transmission
Overview of GNSS Constellations (1:48)
How Satellites Communicate with GNSS Receivers (3:29)
Sources of Error in GNSS Signals (3:14)
The Need for GNSS Corrections (2:57)
GNSS Coordinate Correction Methodologies
RTK vs PPK Corrections (3:49)
PPK Workflow - Logging Static Data, RINEX, and OPUS (7:47)
Overview of RTK Workflow and Corrections (6:32)
Fieldwork
GCP Overview and Types (2:26)
Laying out First Ground Control Points (2:52)
Reflective Tape Chevron (2:59)
Setting Up GNSS Receiver and Getting Data for First GCP (2:46)
Logging Static Data for PPK Workflow (3:11)
Connecting to RTK Correction Source - Base Station (5:30)
Connecting to RTK Correction Source - Real Time Network (3:26)
Flying the Mission (5:12)
Processing GNSS Data
PPK Workflow - RINEX File and OPUS Submission (5:12)
PPK Workflow - OPUS Results (2:03)
OPUS Alternative - Trimble Centerpoint RTX (with Output Comparison) (3:39)
GCP and Checkshot Data File (4:48)
Model Results and Data Review
Bringing GCP Data into DJI Terra (4:00)
Quality Report Analysis - M350 RTK Only (No GCPs) (3:02)
Quality Report Analysis - M350 RTK with GCPs (1:54)
Quality Report Analysis - Air 2S (No RTK, No GCPs) (1:28)
Relative Accuracy Comparison - Air2S to M350 (1:40)
Final Exam
Final Exam
GCPs vs. Checkshots
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