Ecodrone^®Light and small airborne LiDAR system

The Yiketai lightweight airborne LiDAR system is independently developed by our companyEcodrone^®On the basis of the multi rotor unmanned aerial vehicle remote sensing system, equipped with advanced foreign laser radar sensors, a new generation of airborne laser radar system independently integrated and developed has revolutionized the aviation scanning mode of laser radar. Compared to traditional airborne LiDAR, which often weighs hundreds of kilograms, has a price tag of tens of millions of yuan, complex operations, and high transportation and logistics costs, this product has advantages such as small size, light weight, low cost, strong adaptability, and easy operation.

To meet the different needs of customers for price, product functionality, required accuracy and other indicators, our company offers two optional solutions, namely the SCOUT solution for unmanned aerial vehicle LiDAR based on Velodyne Puck Lite sensor and the miniRANGER solution for unmanned aerial vehicle LiDAR based on Riegl miniVUX sensor.

Specification

1、EcoDrone UAS-8Drone platform

1) Machine weight ≤ 5000g, maximum takeoff weight ≥ 15000g, maximum load ≥ 5000g, symmetrical wheelbase 1200mm, automatic folding tripod, screw motor, shock absorption without virtual position

2) Has strong scalability, can flexibly install and configure multispectral, hyperspectral, infrared thermal imaging LiDAR、 Various sensors such as visible light can be installed simultaneously to simultaneously collect diverse ground information

3) The idle hover time shall not be less than 50 minutes, the effective operation time shall be 30 minutes (equipped with a multispectral camera), and the flight speed shall be 10m/s

4) High precision GPS positioning module, supporting GPS/Beidou dual-mode

5) Equipped with flight modes such as waypoint navigation, fixed point, hover, fixed altitude, route, area coverage, surround and follow (follow me mode, ground station support required), and a "black box" function module

6) Equipped with signal interference protection, fault protection, low voltage automatic protection, and one click automatic return and landing function

7) Pressure and GPS altitude determination, ultrasonic altitude determination within 10m, accuracy of 1cm

8) Equipped with a 4K high-definition color imaging lens as standard, with a frame rate of 30FPS (at a maximum resolution of 4K) and a picture resolution of 16MP; Optical lens f/2.8120 degree HFOV (optional 82 degree HFOV distortion free optical lens); Optional DSLR 20MP or 24MP resolution color lens

9) Remote control: Operating frequency 2.400-2.483GHz (DSSS technology), optional channel number 16 or 32, transmission power (EIRP) FCC 100 dBm, control distance 2.7km (with extended range mode enabled, up to approximately 5 km)

10) Online Image Transmission (FPV Reception): Dual channel image transmission technology for analog and digital signals, capable of simultaneously transmitting visible light and thermal imaging videos online, operating in a frequency band of 5.8G, supporting 1080P real-time high-definition image transmission, with a display screen resolution of 1920x1080 and a maximum distance of 5km. It ensures synchronous image transmission without delay or delay, and can also receive high-definition display images online

11) Data simultaneous interpreting module, including the synchronous transmission and display of position (longitude and latitude), height, temperature, humidity, solar radiation, ground temperature, solar radiation and other data information during UAV operation on the ground station

12) Ground station: including portable case, field survey grade notebook and corresponding software, capable of switching between Google Maps, Amap or Bing Maps, automatic flight planning for waypoint input, monitoring of speed/distance/altitude/horizontal/longitude/latitude/ascent/descent speed/temperature, downloading task log files, realizing unmanned aerial vehicle automatic tracking ground station function (follow me), etc

13) Energy Management System: Standard battery capacity of 22000mAh, maximum charging current of 12A, dual channel charger, maximum charging power of 1400W

2.1、SCOUTLidar remote sensing solution

1) Dimensions: 160 × 116 × 116mm

Working voltage: 12-28V

Power consumption: 40W

Weight: 1.65Kg

Working temperature: - 10℃～40℃

2) Navigation system

Satellite system: GPS，GLONASS

Calibration support: static, differential, dual antenna

Working mode: real-time, post-processing

Positioning accuracy: 1cm+1ppm (horizontal direction)

3) LiDAR sensor

Laser performance: Level 1 eye safety, 905nm

Measurement range: 1m~120m, resolution: 2mm

Distance measurement error: 30mm

Scanning frequency: 300000 times/second, up to 600000 points/second

Field of view range: vertical ± 15 °, horizontal 360 °

Multiple echoes: 2

Number of laser panels: 16

Recommended scanning height: 20-60m (ground clearance)

The relationship between point cloud density and flight speed and altitude

2.2、THE mini RANGERLidar remote sensing solution

1) Sensor dimensions: 269 × 99 × 85mm (STIM)/302 × 99 × 85mm (FOG)

Navigation box dimensions: 300 × 99 × 85mm

Working voltage: 12-28V

Power consumption: 80W

Weight (sensor+cable): 3.5Kg (7.7lbs) FOG/IMU; 2.9Kg（6.4lb）STIM/IMU

Working temperature: - 10℃～40℃

2) Navigation system

Satellite system: GPS，GLONASS

Calibration support: static, differential, dual antenna

Working mode: real-time, post-processing

Positioning accuracy: 1cm+1ppm (horizontal direction)

3) LiDAR sensor

Laser performance: Level 1 eye safety, 905nm

Minimum distance measurement: 3m

Laser beam size: 160mm × 50mm@100m

Maximum effective measurement frequency: 100000 times/second

Field of view angle: 360 °

Accuracy: 15mm@150m

4) Scanner performance

Scanning mechanism: mirror rotation

Mirror rotation speed: 10-100 scans per second

Scanning angle width: 0.05 ° to 0.5 °

Angle measurement resolution: 0.001 °

Internal synchronization timer: real-time synchronization timestamp

The relationship between point cloud density and flight speed and altitude (100kHz)

3. Standard 4K high-definition RGB color imaging lens, F/2.8, FOV 120 degree wide-angle lens (optional with other optical lenses), image resolution 16MP; Optional Sony A6000 lens

4. Software: LiDAR point cloud data processing, 3D vector data and models, etc

technology roadmap

Figure 3 Topographic Mapping

Figure 5 Cross section thickness of point cloud

Accuracy verification:

Randomly select several feature points in the survey area as control points, use RTK method to measure the coordinates of the control points, compare the laser point cloud measurement coordinates with the measured coordinates of the control points, and obtain the true elevation error, reflecting its accuracy index.

Control point: plane accuracy<1cm; Elevation accuracy<1.5cm

As shown in the table above, the mean square error (standard deviation) of the point elevation is 3.7cm, which fully meets the requirements of high-precision surveying. Can be used in various fields, including large-scale topographic mapping.

3、 Application direction

Drone LiDAR combines the advantages of both drones and LiDAR, and is widely used in various industries due to its low cost, high precision, and efficient convenience. Typical applications are as follows:

·Topographic mapping

·Urban 3D modeling

·Agriculture and Forestry

·Archaeological and cultural heritage protection

·Glacier and Snow Mapping

·Landslide monitoring