(at 11:01 on August 24, China successfully launched the beijing-3b satellite into space using the long march-2d carrier rocket at the Taiyuan Satellite Launch Center. The satellite successfully entered the predetermined orbit and the launch mission was a complete success.) At noon on August 24, the beijing-3b satellite developed by the Fifth Academy of Aerospace Science and technology group was successfully launched from the Taiyuan Satellite Launch Center on the long march-2d carrier rocket. Subsequently, the satellite accurately entered the predetermined orbit, and the launch mission was a complete success. The 0.5-meter-high-resolution "Tianshu camera" developed by 508 Institute of the Fifth Academy of Aerospace Science and technology group is the high-end flagship product of Beijing No. 3 Series satellite cameras. It mainly provides telemetry data services in the fields of land and resources management, agricultural resources investigation, ecological environment monitoring and urban comprehensive application. At the same time, it innovates and expands emerging markets such as real-world 3D, urban digital base and smart agriculture. "Compared with the 'Tianshu camera' carried on the beijing-3 satellite a, the 'Tianshu camera' carried on the satellite B has a higher performance." Wang Jinqiang, project manager of "Tianshu camera" of 508 Institute of the Fifth Academy of Aerospace Science and technology group, said that the camera uses an ultra long focal length optical lens, and the resolution of the camera has reached the high level of domestic commercial remote sensing. In terms of forestry management, "Tianshu camera" can distinguish individual tree crowns, conduct forest fire loss assessment, and monitor illegal logging. In agricultural management, it can realize the accurate evaluation of crop planting area. In urban construction, it can also find illegal buildings and illegal land use. The research and development team of the Fifth Academy of Aerospace Science and Technology Group redesigned the optical lens with stronger performance based on the "Tianyu camera" and upgraded and evolved the imaging capability; It broadens the spectral band of panchromatic imaging, absorbs more spectral information, is more conducive to color fusion images, and has more color details; The aperture of the main mirror is increased, and the large aperture lens can further improve the ability of collecting light and improve the resolution. It is worth noting that the optical lens of "Tianshu camera" adopts vertical adjustment technology. Jiao Wenchun, deputy chief engineer of the 508 Institute of the Fifth Academy of Aerospace Science and technology group, introduced that the vertical installation and adjustment is a kind of installation and adjustment technology that overcomes the influence of ground gravity. Compared with the traditional horizontal installation and adjustment, it is more suitable for the installation and adjustment of large-diameter cameras and technically more challenging. In order to improve the control performance, "Tianshu camera" also adopts many considerate designs, such as the memory recall function of power-off maintenance, which can make the adjusted parameters not affected by the switch on and off, so that the user can pay more attention to the target to be photographed and use it more comfortable. In addition, compared with the traditional manual focusing on the ground in the past, the "Tianshu camera" has added the on-board automatic focusing function, which can quickly adapt to the needs of shooting at different distances, and can focus objects from tens of kilometers to hundreds of millions of kilometers of deep space objects. (news agency)