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Discovery of Lost Mayan City Using LiDAR - Location: Mexican jungle - Discovery: Lost Mayan city revealed beneath dense vegetation - Technology Used: LiDAR (Light Detection and Ranging) , which penetrated the jungle canopy to reveal ancient structures What is LiDAR? - Definition: A remote sensing method using light pulses to measure distances and create 3D surface models - Accuracy: Can achieve up to 10 cm vertical accuracy (US Geological Survey) - Components: - Laser: Emits rapid pulses toward the ground - Scanner: Collects reflected light to measure distance - GPS Receiver: Provides precise geographic location for each data point How Does LiDAR Work? - Process: - Laser pulses are directed at surfaces (trees, buildings, ground) - Light reflects back to the sensor - The time for reflection is measured to calculate the distance - GPS adds exact location data to each point, ensuring geographical accuracy Applications of LiDAR - Forestry: Measures tree height and density - Urban Planning: Maps infrastructure - Archaeology: Reveals hidden sites (e.g., Mayan city) - Environmental Science: Flood modeling and landscape change assessment Advantages of LiDAR - Speed: Quickly covers large areas - Accessibility: No need for physical ground access; ideal for dense or hard-to-reach areas - Accuracy: Provides high-resolution terrain data useful for various scientific fields Limitations of LiDAR - Cost: Expensive to deploy and operate - Skill Requirement: Requires skilled operators and specialized equipment - Weather Sensitivity: Heavy rain or fog can reduce data quality
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