Topographic: These lidar methods are built to map land and open spaces, and usually use wavelengths close to the infrared Section of the light spectrum. use lidar for its autonomous cars and trucks (Elon Musk is outwardly not a fan), but is screening out some lidar sensors for long term https://top-news-stories05926.ampedpages.com/the-fact-about-lidar-survey-company-bangladesh-that-no-one-is-suggesting-56817325