Recently, CCTV News and other reports have shown that Changguang Satellite Technology Co., Ltd. has achieved China's first satellite ground laser high-speed image transmission test.
Changguang Satellite was established on December 1, 2014, and is the first commercial remote sensing satellite company in China. On October 7, 2015, the company's independently developed "Jilin No.1" satellite group was successfully launched, pioneering the commercial satellite application in China and also creating a history of a research and development team successfully launching four satellites with one arrow.
At present, laser communication ground stations not only achieve high bandwidth and miniaturization, but can also be moved and deployed at any time, improving the reliability and stability of satellite ground laser data transmission.
The communication bandwidth reaches 10Gbps, which is more than 10 times the traditional microwave data transmission bandwidth. In the future, it will be expanded to 40Gbps-100Gbps, greatly improving the efficiency of remote sensing image data acquisition for the "Jilin No.1" satellite. The high-performance disk array of Xinyun plays an important role in helping Changguang Satellite achieve secure and stable data transmission.
a. Satellite communication technology
How to achieve long-distance data transmission?
The raw data of satellite remote sensing mainly consists of huge unstructured file data, and the storage and processing of these raw data require unstructured storage systems based on file systems as support.
Xinyun Image Storage is based on a powerful file system optimized specifically for the image field, with powerful concurrent read and write bandwidth performance, which can support the rapid writing and reading of massive amounts of such data, greatly saving time and improving efficiency.
Taking Xinyun's 60 bit fiber optic image storage as an example, a single device has a read bandwidth of up to 8000MB/s and a write bandwidth of up to 3400MB/s. Fully meet the needs of image data storage and high data processing transmission.
b. Devices used for data storage
How to follow the changes of communication ground stations at any time?
As one of the key components of the mobile communication system, the Changguang satellite communication ground station has flexibility and mobility, and sometimes needs to be relocated at any time to adapt to different communication needs.
In order to achieve data storage, the equipment can keep up with changes in the communication ground station and be carried to new communication ground stations for data storage at any time. Changguang Satellite has chosen Xinyun's lightweight and portable storage array with high-speed transmission performance. It is a blessing for cross regional data managers. By selecting an aviation box, the transportation of materials can be safely completed over long distances without worrying about data damage caused by hard disk turbulence.
Xinyun is a leader in enterprise level image storage. With the assistance of Xinyun, efficient and secure data storage and management services can be enjoyed, and data storage devices can change and move at any time, smoothly responding to the challenges brought by changes in communication ground stations.
c. An increase in remote sensing image data
How to meet the growing demand for satellite data?
With the advancement of remote sensing technology and the increase of satellite systems, the continuous growth of long haul satellite remote sensing image data is a common trend. In order to face the potential explosive growth of long haul satellite remote sensing data, it is necessary to build a storage system with scalability.
Xinyun image storage supports horizontal and vertical expansion. In terms of single machine expansion, considering the flexible expansion of storage space required by users, the system can support cross RAID volume creation and online expansion. In the case where the standalone device is fully configured, capacity expansion can also be achieved through two methods: JBOD expansion cabinet and CLUSTER.
For the JBOD expansion cabinet method, external expansion cabinets can be used to achieve economic expansion. For FUSTER, theoretically it can be infinitely scalable, providing at least a storage capacity of over 10PB. Each Xinyun image storage has an independent IP to share the storage pressure.
The Xinyun geographic information and satellite remote sensing data storage solution is applied in industries such as geographic information and satellite remote sensing. This solution can help users better manage and analyze large-scale geographic information and satellite remote sensing data, improve the efficiency of data processing and analysis, and provide strong support for the development of related industries.