1. The "High-precision Light and Small Aerial Remote Sensing System Core Technologies and Products" project is a key project in the "Earth Observation and Navigation Field". The goal is to break through the light and small aerial remote sensing payload, high-precision POS and inertial stability. platform and other core technologies, and developed four core products: high-precision lightweight combined wide-angle digital camera, light and small airborne lidar, high-precision and miniaturized POS and stable platform, and efficient and fast data processing system to promote high-precision light and small aerial remote sensing in my country Industrial development.
2. Aerial digital cameras have become an important means of obtaining photogrammetry data. Along with traditional film-based aerial survey cameras, aerial digital cameras are expected to replace traditional film-based aerial survey cameras as the main means of obtaining geospatial information. The domestic digital camera SWDC-4 also occupies a certain share in the domestic market.
3. The new generation of digital photogrammetry processing platform has entered the practical stage. With the rapid development of new sensors such as aerial digital cameras and airborne lidar, the data acquisition of photogrammetry systems has been unprecedentedly improved. The emergence of DPGrid effectively solves the bottleneck problem of massive data processing technology, greatly improves the efficiency of digital photogrammetry operations, and provides a solid guarantee for the rapid collection and update of three-dimensional spatial information.
4. LiDAR technology is widely used. Airborne lidar integrates three technologies: laser scanner, global positioning system and inertial navigation system, with ranging accuracy reaching centimeter level. At present, there are about 20 sets in China, and they have been successfully used in large-scale mapping, power grid design, transmission line inspection and maintenance, three-dimensional modeling, etc. The measurement speed of ground lidar has also been greatly improved, and the ranging accuracy can reach millimeter level. When fused with digital images, texture mapping of three-dimensional models can be quickly completed. The Chinese Academy of Surveying and Mapping has successfully used the fusion of airborne lidar, ground lidar and digital imagery for the three-dimensional modeling of the Mogao Grottoes in Dunhuang, achieving good results in cultural heritage protection and other aspects.
5. The data acquisition and application of mobile mapping systems have received attention. my country's research in the field of mobile mapping started early and has made breakthrough progress in multi-sensor integration, system error detection and comparison, and transportation geographic information systems. The LD2000 mobile measurement system has been exported to Italy, Iran and many other countries.
6. Oblique photography technology is a high-tech technology developed in the international surveying and mapping field in recent years, and was introduced to China in the first half of this year, opening up a broader development space in the field of high-resolution urban aerial remote sensing. , making new contributions to further improving the level of surveying and mapping science and technology in our country.
In addition, the first domestic airborne multi-band multi-polarization interferometric SAR mapping system was successfully tested, the application of high-resolution satellite remote sensing images in western mapping, the increasing maturity of small satellite constellation technology and The development of smart sensors, my country's synthetic aperture radar technology moving from two-dimensional to three-dimensional, map products expressed in images and three-dimensional forms, and many other developments have greatly promoted the rapid development of the 3S industry. In the next few years, remote sensing technology will enter a new stage that can quickly and timely provide a variety of earth observation data.
In addition, there are also new technologies coming out in China recently, but I don’t have relevant information. Please share more information. Which unit or school are you from?