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What Is LiDAR?
Sep 19, 2022
What is LiDAR? Let's have a further discussion.
LiDAR - light detection and ranging - is a remote sensing method used to examine the Earth's surface.
LiDAR, which stands for Light Detection and Ranging, is a remote sensing method that uses light in the form of a pulsed laser to measure the distance to Earth (variable distance). These light pulses, combined with other data recorded by airborne systems, generate precise three-dimensional information about the shape of the Earth and the features of its surface.
LiDAR instruments mainly consist of lasers, scanners, and dedicated GPS receivers. Airplanes and helicopters are the most common platforms for acquiring lidar data over a wide area. The two types of lidar are topographic and bathymetric. Topographic lidars typically use near-infrared lasers to map land, while bathymetric lidars can also measure seafloor and riverbed heights using water-permeable green light. In contrast, LiDAR provides accurate 3D measurements from short to long distances, even in challenging weather and lighting conditions. The technology can be combined with other sensory data to more reliably represent static and moving objects in the vehicle environment.
Application of LiDAR
LiDAR systems enable scientists and mapping professionals to examine natural and man-made environments with accuracy, precision and flexibility. Many scientists are using lidar to make more accurate coastline maps, to make digital elevation models for geographic information systems to assist in emergency operations, and many other applications.
Deepth LiDAR Can Detect
Much of the initial use of lidar was to measure water depth. Depending on the clarity of the water, the lidar can measure depths from 0.9m to 40m with a vertical accuracy of 15cm and a horizontal accuracy of 2.5m.
Advantages of LiDAR
Several key advantages of lidar include: Data can be collected quickly with very high accuracy. Surface data has a higher sample density. High sample density improves results for some applications, such as floodplain delineation.
About Feiyan Technology
As the largest independent geospatial data company in China, Feiyan Remote Sensing focus on providing data processing of LiDAR for high accuracy and complete. We sincerely welcome you to contact us to get LiDAR data processing service or any other concerned information from Feiyan Technology.
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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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