Surveying: A High-Tech Career Tim Devaney, Survey Team Leader and Keefer Thurman, Survey Crew Chief for McClure. Surveying has been an essential part of human civilization for centuries. From ancient civilizations using basic tools to modern-day technological advancements, surveying has played a crucial role in shaping our world. And with the rapid development of geospatial technology, it truly is a high-tech career. Laser Scanning Laser scanning, also known as LiDAR, is another technology that is transforming the surveying industry. This technology uses laser beams to measure distances and create 3D models of objects and environments. It is particularly useful for surveying large areas and capturing detailed data, making it a valuable tool for infrastructure projects, urban planning, and environmental monitoring. The Evolution of Surveying Tools Surveying has come a long way from the days of land surveyors using basic tools like chains and compasses. The introduction of electronic distance measurement (EDM) in the 1950s revolutionized the industry, making it faster and more accurate. The 1970s saw the introduction of the first total station, which combined EDM with electronic theodolites, further improving accuracy and efficiency. Drone Surveying The very first photogrammetry mission was completed in 1917 by the US Geological Survey, who mounted a camera to the bottom of an airplane. It wasn’t until 1995 that cameras began being mounted to drones and were used in the military. Then in 2009, DJI produced the very first commercial drone equipped with a high-resolution camera, beginning the photogrammetry age in Survey. In 2016, the FAA ruled to allow the use of commercial drones to attach LiDAR (Light Detection and Ranging) payloads. This technology is particularly useful for surveying hard-to-reach or dangerous areas, such as construction sites, mines, and disaster zones. It also allows for more frequent and accurate surveys, providing real-time data for better decision-making. Geospatial Technology Takes Over The 1990s saw the rise of geospatial technology, which uses satellite imagery and GPS to map and measure the Earth’s surface. This technology has greatly improved the accuracy and speed of surveying, making it possible to map large areas in a fraction of the time it would have taken with traditional methods. GPS Surveying GPS technology has been a game-changer in surveying, and it continues to evolve. The latest GPS surveying tools use real-time kinematic (RTK) technology, which provides centimeter-level accuracy in real-time. This allows surveyors to work faster and more accurately, even in challenging environments. The Benefits of Advanced Surveying Technology The advancements in surveying technology have numerous benefits, including: • Increased accuracy: With the use of advanced tools and techniques, surveyors can achieve higher levels of accuracy, reducing the margin of error and improving the quality of data. 16 | March 2024 | Cityscape
Cityscape March 2024: Page 16
