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Does LiDAR Work In The Rain?

Email Nolan at nolan@bench-mark.ca with your questions and suggestions! Nolan from Benchmark tackles a common question: can LiDAR mapping be done in the rain? It sounds simple, but most of the information out there isn’t written for surveyors—so this video breaks it down from the ground up. First, it explains how LiDAR works (laser pulse + time-of-flight), then shows why rain messes with the signal: • Attenuation: the drop absorbs the pulse and you lose points • Refraction/diffraction: the pulse bends and adds error/noise • Backscatter: the pulse reflects off droplets and creates “ghost” points in the air Bottom line: LiDAR can still work in the rain, but the data gets noisier—especially as rain intensity increases. The practical advice is to avoid scanning in rain when possible, watch for breaks using radar, and fly in the lightest conditions you can. Nolan also covers mitigation tips like using only the first return (a common manufacturer recommendation) and keeping an eye on IP ratings, since many aerial LiDAR sensors and drones are only splash-resistant. The video wraps with a reality check: most rain-vs-LiDAR research is aimed at autonomous vehicles, not survey-grade mapping, so expectations and tolerances are totally different. -- Bench Mark Equipment & Supplies is your team to trust with all your surveying equipment. With over 20 years of exceptional after-sales service on an individual basis, we have been providing high-quality surveying equipment to land surveyors, engineers, construction, airborne and resources professionals in Calgary, Canada, and the USA. We provide a wide selection of equipment, including global navigation satellite systems, RTK GPS equipment, GNSS receivers, data collector systems, and more. Whether you are in the field or in the office, our highly trained staff of engineers are always ready to help because we strive to provide the highest level of customer care and service for everyone. For Cheat Sheets and Video Guides: https://bench-mark.ca/training-video-... For any questions or a competitive quote, contact our team today. 🇨🇦 www.bench-mark.ca 🇺🇸 https://rtkgpssurveyequipment.com ✉️ sales@bench-mark.ca📱 1-888-286-3204 (Toll Free) – 403-286-0333 (Calgary Office) Stay in Touch ⚡️ FB 🇨🇦 ‣   / benchmark.equipmentandsupplies   FB 🇺🇸 ‣   / benchmark.equipmentandsupplies.usa   LinkedIn 🇨🇦 ‣   / bench-mark-equipment-supplies   LinkedIn 🇺🇸 ‣   / bench-mark-equipment-supplies-inc-usa   Twitter ‣   / bmequip   IG ‣   / bmequip