About the Course:
This course introduced the theory and operation of Global Navigation Satellite Systems (GNSS) and Global Positioning Systems (GPS), and the application of GNSS for solving research problems common in the Geosciences. Geodesy was covered in depth. GPS technology was introduced through a review of the fundamental concepts of coordinate systems and geodesy, followed by an in-depth discussion of signal propagation, signal processing, and the limitations of both handheld and differential GPS units. This course also introduced basic concepts of figure of the Earth, frames and references, map projection, datums, ellipsoids, GPS accuracy and precision, applications in Earth resource mapping and database creation, and elementary GPS phase data processing.
In this lab, ArcGIS Online was mastered with collected data in the field using a GNSS mobile device.
The ESRI Field Maps mobile app was used to survey the Bonfire Memorial Site at Texas A&M University. Points were taken in a polygon around the memorial along with individual points for each statue and a line for the walkway leading up to it. An ArcGIS Online map was created and published with all associated data for this assignment.
Outcomes of this lab included explaining how to compute the spherical distance between two GPS coordinate locations, compute standard deviation calculations, and converting coordinates between decimal degrees, degrees minutes, and degrees minutes seconds.
In this lab, vertical datums were compared on FEMA flood maps by comparing NGVD29, NAVD88, and geoids.
The ESRI Field Maps mobile app was used to survey the FEMA flood zone near the Texas A&M University golf course. Points were taken in a polygon around the flood zone 3 individual times along the same path to form an average shape. An ArcGIS Online map was created and published with all associated data for this assignment, including a Web App Map.
Outcomes of this lab included analyzing a FEMA flood map, locating FEMA reference benchmarks using GNSS, transforming elevation between vertical datums, and finally applying geoidal models to ellipsoidal elevation to compute orthometeric heights.
In this lab, a drone survey was planned and executed by using the DroneDeploy and Pix4D softwares.
A DJI Phantom 3 was used in the completion of this drone survey to produce 3D scanned images.
Outcomes from this lab included planning a drone survey, setting GCPs for a drone survey, processing drone data, producing drone data in the correct coordinate system, and finally completion of environmental assessments based on UAS derived imagery.
In this lab, 640 acres of well land and well plats were researched to compete a new well design. A land boundary, well points, and wellbore were all created in ArcGIS Pro.
Outcomes from this lab included designing a surface location, wellbore path, and spacing permit plat, investigating the penetration, take points, frac stations, and terminus of a wellbore, and finally building a plat in ArcGIS Pro.
In this lab, a topo of an area was completed as well as staking a building site in Civil3D. Real Time Kinematic (RTK-GPS) using TxDOT’s Virtual Reference Station Real Time Network (VRS-RTN) was also obtained.
Outcomes from this lab included collecting topographic data using RTK-GPS, checking OPUS control points with RTK-GPS, stakeout a building, downloading and processing RTK-GPS in Civil3D, and finally designing a Civil3D plan.