UAV laser surveying system 'UL-3' effective for shortening construction periods and reducing manpower.

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TI Asahi UL-3　

last updated：Feb 28, 2025

TI アサヒ本社

Official site

Acquire 3D data of a wide area of the surface in a short time. Ideal for shortening construction time and reducing labor!

The 'UL-3', developed by TI Asahi, known for its PENTAX brand surveying equipment, is a UAV laser surveying system capable of acquiring high-precision 3D data of extensive surface areas using a LiDAR sensor and three 26 MP cameras. It can fly for up to 30 minutes, making it particularly suitable for measuring forest areas and disaster sites. The measurement range is up to 300 meters. It employs a high-rate GNSS/IMU sensor and the Matrice 350 airframe. The included LP360Drone software makes it easy to create deliverables, effectively shortening project timelines and reducing manpower. 【Features】 ■ LiDAR sensor with a point cloud density of 640,000 points/360° ■ Maximum measurement range of 300 meters, suitable for forest areas and disaster sites ■ Equipped with high-rate GNSS/IMU sensor and Matrice 350 airframe ■ Maximum flight time of 30 minutes (during hovering) with a communication range of approximately 8 km ■ The area that can be measured on a single full charge is 458m x 458m = approximately 21 hectares (about 4.5 times the size of Tokyo Dome). ■ The intuitive software "LP360" allows for the generation of deliverables and classification of point clouds. *For more details, please download the materials or contact us.

Related Link - https://www.pentaxsurveying.com/support/movies/uas…

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basic information

【UL-3 Measurement Unit Main Body】 ■LiDAR Sensor Measurement Range: 0.5m to 300m Number of Beams: 32 Returns: 3 Scan Angle: FOV (Cross-section Direction) 120° maximum 360°, Interval 0.09°@5Hz/0.18°@10Hz/0.36°@20Hz, FOV (Flight Direction) 40.3° (Rear -20° to Front +19.5°), Interval 0.13° Acquisition Points: 640,000 points/second@1 Return, Maximum 1,920,000 points/second@3 Returns, Accuracy: ±1cm, Precision: ≦5mm@1σ ■Equipped with three Sony cameras: 26 million pixels (APS-C) Mechanical Shutter, Calibrated ■Equipped with high-precision IMU (200 times/second) ■Measurement Unit Operating Temperature Range: -15℃ to 50℃ Weight: 1.75kg (Measurement Unit Main Body only) 2.23kg (including battery and accessories) 【UL-3 Aircraft Matrice 350】 Maximum Transmission Distance: Approximately 8km (in the absence of obstacles and radio interference) Equipped with omnidirectional obstacle sensors for collision avoidance Dimensions (Width × Depth × Height) 81.0cm × 67.0cm × 43.0cm (excluding propellers) Diagonal 89.5cm

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Applications/Examples of results

【Features of the accompanying data processing software "LP360"】 With intuitive operation, it allows for easy generation of deliverables and classification of point clouds. The following tasks can be performed: - Generate color point clouds based on LiDAR and image data - Data visualization - Quality checks - Analysis - Classification - 3D editing 【Main functions of the software "LP360"】 Strip Align module: Removes positional offset errors between flight lines from LiDAR data. 3D Accuracy module: Automatically performs horizontal and vertical checks to eliminate positional bias. LP360 Photo: A module for generating high-speed orthophotos. 【Applications】 Measurement of surface areas in vast forest regions, etc. It enables efficient measurement from the air in locations that are difficult for people to access, such as disaster sites and mountainous areas.

Detailed information

Example of measurement data processed using the software LP360 Easily perform strip alignment (adjustment of point cloud discrepancies between flight paths) with just the push of a button. Image: Before applying strip alignment
Image: After applying the strip aligner
Image: Automatic detection and bias removal using the dedicated target Accuracy star.
Image: Automatic detection using reference points, bias removal
Image: Classification Function Automatic classification of features - trees, buildings, and soil are classified by color. Display via web viewer (※Additional optional license required).
Image: Offset Adjustment: Offset adjustment using control points
Image: Smoothing: Smoothing function to improve the results of the TIN ground filter.
Image: Ortho image Ortho images are generated in a short time. (This case: approximately 26 seconds)