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LiAir

0N User Guide • GreenValley International Inc.

Page 40

Figure 30-10 Trajectory Report - Height Profile

Velocity Profile:

This plot shows the changes in velocity during the data acquisition. Red line is

for the changes in East direction. Green shows the changes in North direction. While the blue

line shows the changes in up direction to the ground.

Figure 30-11 Trajectory Report - Velocity Profile

5.2.4.2 Image Overlap Report

The image overlap report lists the image overlap. The report could check whether the photos are lost.

Содержание LiAir 220N

Страница 2: ...move portions of this document No Part of this document may be reproduced or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without prior written per...

Страница 3: ...LIDAR mapping survey systems As we continue to update and improve the product you may find some differences between the contents of this document and your LiAir 220N system We will diligently update t...

Страница 4: ...era Optional 13 3 Equipment Setup and Operation Procedure 13 3 1 Assemble and install LiAir 220N Payload Mounting Kit 13 3 2 Set up GNSS Base Station 13 3 3 LiAir 220N Setup and Operation DJI M300 16...

Страница 5: ...supply are not covered by the Product Warranty STOP using the product and contact GVI support immediately if there is any visible damage or if persistent system warnings or alarms are observed Failur...

Страница 6: ...iAir 220N please contact GVI at info greenvalleyintl com 2 2 System Basics The LiAir 220N system integration is comprised of multiple technologies including Laser Scanner LIDAR sensor GNSS Global Navi...

Страница 7: ...Ultralight Specifications LiAir 220N SPECIFICATIONS Key Parameters Weight 2 0kg Incl camera Scan Range 200 m 10 reflectivity System Accuracy 5 cm Voltage 12 24 V 1 1A 24 VDC Effective Scan Rate 720 0...

Страница 8: ...reflecting object can be determined As shown below the Hesai Pandar40P has a FOV of 360 horizontally and 40 vertically Note that the effective detecting distance of the Hesai Pandar40P varies based on...

Страница 9: ...tellite system or GNSS on LiAir 220N supports mainly includes GPS GPS the U S Galileo satellite navigation system Europe BeiDou Navigation Satellite System China and GLONASS Russia The GNSS of LiAir 2...

Страница 10: ...sensor to work properly Storing the data The SD card inside is used to store the data of IMU camera and device log b LiAir 220N Ultralight power and data ports ON OFF button GNSS antenna ports as wel...

Страница 11: ...dates between the LiAir system and a computer 7 GNSS1 Antenna Port This port is used to connect with the GNSS antenna with feeder cable as the first choice 8 GNSS2 Antenna Port This port is used to co...

Страница 12: ...ight Control Panel Table 4 Detailed explanations of Indicator LED light statuses displayed on the LiAir 220N Ultralight Control Panel Explanation of Indicator LEDs LED Light Status Description Status...

Страница 13: ...ser guide describes the recommended equipment setup and operation procedures 3 1 Assemble and install LiAir 220N Payload Mounting Kit Assembly and installation of the LiAir 220N Ultralight mounting ki...

Страница 14: ...omagnetic interference might be cellular base station high voltage transmission lines or objects with high reflectance e g mirror large water body which may cause the multipath propagation 2 Set up ba...

Страница 15: ...Figure 5 Power and USB Interface 3 Calculate the antenna height Measure the oblique distance from antenna bottom edge to the ground for more than three times take the mean value as H1 Antenna height m...

Страница 16: ...h LiAir 220N main payload to the DJI M300 RTK system 2 Power on the M300 RTK 3 Press ON OFF button Hold the ON OFF button for 2 3 seconds If the light status is flashing red the system is initializing...

Страница 17: ...ght Click on Ethernet connection for LiAir Radio Station and Choose Properties f Click on Internet Protocol Version 4 TCP IPv4 and then the Properties button g Set the IP address and Subnet mask to th...

Страница 18: ...ters looks like this Figure 9 LiAir 220N Ultralight User Interface Fast Mode Click collection button create new project and synchronize the collection of both IMU data and LIDAR data simultaneously No...

Страница 19: ...in LiAir 220N System 7 Collect LiAir 220N Data a Complete initialization of both IMU and LIDAR LED indicator lights should both be solid blue b Press ON OFF button for 0 2 seconds The DA LED light on...

Страница 20: ...integrated camera data is available a log file as well as the laser scan data The recommended method for data transfer requires users to establish a connection between LiAir 220N s internal storage de...

Страница 21: ...Figure 11 Connecting Base Station to a Computer for Data Download 1 Connect the Base Station to a computer via the provided USB cable 2 The computer should recognize Base Station as an external disk...

Страница 22: ...s a stand alone application with a helpful graphical user interface as well as a command line interface for scripting and easy integration with third party software In this article the main purpose to...

Страница 23: ...rated file of LiDAR csv but only available to partial series like LiAir 200 and LiAir 220 LaserRaw folder is used to store the raw data of laser scanner s point cloud vpts After being post processing...

Страница 24: ...on the toolbar to open LiGeoreference project file live through Browse icon and users can also open the project file via Recent Projects icon which refers to history project opened before And both of...

Страница 25: ...ure Parameters Before undertaking post processing procedure users can use the Settings function to set the calculation parameters including laser settings camera settings pos process and target coordi...

Страница 26: ...as pos calculation and point cloud calculation functions Users could directly use LiGeo software to calculate LiAir 220N s trajectory or choose to use other third party software to perform pos process...

Страница 27: ...than 10 km the long baseline mode can be selected 3 Load rover station data under normal circumstances the software will automatically read the rover station data under the project folder 4 Select ba...

Страница 28: ...d select Average mode And the positioning principle is single point positioning which leads to meter level errors between the point cloud coordinates calculated by this method and the true coordinates...

Страница 29: ...ample Cloud Trajectory base station is normally stored in this mode Select from favorites Users could select the base station coordinates stored in the software Import External IMU or Existing Pos Dat...

Страница 30: ...le users could change the range via clicking Filter to set the parameters For more details please visit LiGeoreference users guide Figure 22 Laser Setting Display Interface Camera Setting Normally use...

Страница 31: ...modes to be selected including trajectory selection or draw polygon And this document only introduces the operation process of using the trajectory selection tool The way of drawing polygon ould be f...

Страница 32: ...24 Select On Trajectory Display Interface 2 If needed to select multiple trajectories then repeat the above operation and the selected trajectory segments will be displayed in the cutting table at the...

Страница 33: ...le Display Interface 5 2 3 3 Data Georeferencing Click Start button to start data calculation After the calculation is completed the point cloud is automatically displayed in the main window Figure 27...

Страница 34: ...on the Y axis The green part on the plot means the number of satellites is good at that time The blue part on the plot means the number of satellites is just acceptable at that time While the red part...

Страница 35: ...cycle ambiguity resolution If the status is shown as green on the plot it means the cycle ambiguity resolution is fixed If it is red on the plot it means the cycle ambiguity resolution is floating Fig...

Страница 36: ...ation among base station data IMU data and GNSS data of the moving device Figure 30 4 Trajectory Report File Data Coverage c Estimated Attitude Accuracy Click to show the plot of attitude accuracy Thi...

Страница 37: ...mated Attitude Accuracy d Estimated Position Accuracy Click to plot the position accuracy The X axis shows the GPS time The Yaxis shows the position accuracy Red line is for position accuracy in East...

Страница 38: ...in East direction Green line shows the velocity accuracy in North direction While the blue line shows the position velocity in height direction Figure 30 7 Trajectory Report Estimated Velocity Accura...

Страница 39: ...d to show the difference among the angles in Roll Heading and Pitch directions during the forward backward processing The smaller the value is the better the matching degree of the forward backward pr...

Страница 40: ...y during the data acquisition Red line is for the changes in East direction Green shows the changes in North direction While the blue line shows the changes in up direction to the ground Figure 30 11...

Страница 41: ...LiAir 220N User Guide GreenValley International Inc Page 41 Figure 31 Image Overlap Report Display Interface...

Страница 42: ...and transported in the protective case provided by or authorized for use by GVI Do NOT scratch the Laser Scanner Lens Ensure the Laser Scanner Lens surface is clean before mission Only clean the lens...

Страница 43: ...will void the Product Warranty Any repair modification or upgrade must be performed by GVI technician or authorized service provider This product is a high precision mapping and surveying instrument t...

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