The world's first airborne laser three-dimensional intensity correlation remote sensing test prototype was successfully developed

Recently, the Shanghai Institute of Optics and Mechanics of the Chinese Academy of Sciences, the Institute of Geographical Resources of the Chinese Academy of Sciences, Beijing Institute of Technology and Shanghai Jiaotong University successfully developed the world's first airborne laser three-dimensional intensity correlation remote sensing test prototype, with a detection range of more than 1km, an imaging field angle of more than 30 degrees, and the first Laser three-dimensional intensity correlation imaging experiments based on mooring helium balloons, onboard and transport-12 airborne platforms were completed. The prototype has broken through key technologies such as coded preset heat source, motion compensation platform and fast image reconstruction platform.

On July 28th, the National Remote Sensing Center held a research project on laser three-dimensional intensity-related imaging technology under the theme of “Advanced Intensity Remote Sensing Imaging Technology Research (Phase II)” in the 863 Program Earth Observation and Navigation Technology field at the Shanghai Institute of Optics and Mechanics. The technical acceptance meeting and the subject passed the acceptance. On the basis of the first phase of the static laser three-dimensional intensity correlation imaging prototype and principle demonstration test, the second phase realized the leap from the static scenes in the field to the three-dimensional imaging of the floating platform. Provide a reliable technical assessment basis for the next onboard application demonstration.

The research team of the research team used the 10 kHz high-speed pre-settable thermal source and the orthogonal structure constrained compressed sensing 3D image reconstruction algorithm to achieve the international leading level. At home and abroad, we have pioneered the research on target-based detection and target recognition based on amplitude-modulated pulse width compression laser intensity correlation and intensity-associated imaging. This technology will expand the high-precision real-time Earth observation core by complementing the advantages of the prior art. Technology to meet the needs of major applications such as national and public security, national economic construction, and social public services, and promote the development of national remote sensing strategic emerging industries. In addition, during the “Thirteenth Five-Year Plan” period, the technology is expected to transform results in related fields such as the automatic driving of the new system of vehicle-mounted laser three-dimensional imaging radar.

The left picture shows the airborne laser three-dimensional intensity correlation imaging test sample; the middle picture shows the airborne test results; the right picture shows the on-board test results.