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Why Airborne Laser Radar Measurement Technology Can Be Used in the Survey of Railway Projects
May 31, 2023
Airborne laser radar (LiDAR) measurement technology, as a new measurement technology that integrates laser ranging technology, GPS differential technology and IMU inertial measurement technology, is built on the carrier aircraft by various system components, such as GPS receivers , inertial navigation system and laser scanner.
The calculation of the distance from the laser scanner to the ground is actually based on combining the laser pulses emitted to the ground, receiving the reflected pulses reflected from the ground, and recording the time at the same time, so as to obtain the corresponding distance from the laser scanner to the ground. Of course, it is also possible to use the POS system to measure the fixed-point position and attitude information, thereby obtaining the three-dimensional coordinates of the ground point.
laser point cloud
At present, the most advanced three-dimensional aerial remote sensing technology is airborne LiDAR measurement technology, which has a certain penetration of vegetation, has the characteristics of high precision and high efficiency, and does not need to arrange various image controls. The airborne LiDAR measurement technology obtains the precise three-dimensional coordinates of ground objects by constructing a high-precision digital ground model. Therefore, the application of airborne LiDAR measurement technology to railway project exploration can fully meet the application requirements of high-precision vertical and horizontal sections of the line.
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Mar 18, 2022Feiyan Invested 20 Million For Airborne LiDAR Measurement
Feiyan invested 20 million to introduce airborne LiDAR measurement, which once again laid the foundation for the hardware strength of feiyan in the industry. More > -
Mar 22, 2022
What is LiDAR point cloud data?
LiDAR (laser detection and ranging) is an optical Remote sensing technology which mainly USES the laser as the emitting light source and adopts the active Remote sensing equipment of photoelectric detection technology. Primarily used in airborne laser mapping applications, it is increasingly becoming a cost-effective alternative to traditional measurement techniques such as photogrammetry. More > -
Mar 22, 2022
The Riegl Vq-1560i Airborne Laser Lidar Lived up to Expectations
The ninth China surveying and mapping geographic information technology equipment expo has been successfully concluded. More > -
Mar 22, 2022
Lidar Forest Survey, Incomparable Advantages
In recent years, LiDAR forest survey has attracted more and more people's attention. However, the hotter this new technology is, the more it needs to be understood from all aspects calmly. More > -
Mar 22, 2022
Lidar Is a Key Technology Involved in Terrain Mapping
This question cannot be asked like that. Aerial photography must be sunny, but the altitude angle of the sun must be considered. More > -
Mar 22, 2022
LiDAR and Hyperspectral Remote Sensing Data Fusion Realize Complementary Advantages
With the continuous development and progress of earth observation technology, and the continuous diversification of means for obtaining spatial information, the use of a single means of spatial data resources has been difficult to meet people's information needs. Lidar and hyperspectral Remote sensing, as two common Remote sensing methods, have different characteristics: Lidar can quickly, efficiently and accurately obtain three-dimensional spatial data of features, and hyperspectral images can well characterize the spectral information of features , Reflecting the characteristics of its features, materials, texture, etc. The fusion of these two kinds of data can achieve complementary advantages, maximize their respective characteristics, and achieve more accurate intelligent detection and identification of objects and higher-precision classification and extraction, which are widely used in forestry ecology, precision agriculture, environment Monitoring and other fields. More > -
Mar 22, 2022
What Are the Requirements for the Airborne Lidar Camera for the Acquisition of Lidar Point Cloud Data
In the effective altitude range, to ensure the lowest point cloud density, the laser radar maximum laser emission frequency To be higher. More > -
Mar 22, 2022
The Basics of LiDAR
LiDAR is an active Remote sensing system. An active system means that the system itself generates energy - in this case, light - to measure things on the ground. In a LiDAR system, light is emitted from a rapidly firing laser. You can imagine light quickly strobing from a laser light source. This light travels to the ground and reflects off of things like buildings and tree branches. The reflected light energy then returns to the LiDAR sensor where it is recorded. More > -
Mar 22, 2022
What Are the Different Uses of LiDAR Processing?
LiDAR (Light Detection and Ranging) technology and processing is used in a wide range of research and practical applications. With its ability to measure dimensions, distances, textures, and many other aspects of targeted subjects, LiDAR processing has become an increasingly important tool in geology, geography, surveying, agriculture, and forestry. Atmospheric sciences, archaeology, seismology, and geomatics also depend on data gathered using LIDAR processing for research, while physics and astronomy benefit from LiDAR's ability to create highly precise maps. More >
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