Congratulations! The "Xiamen Science and Technology No. 1" satellite (XIGUANG-003) has successfully transmitted back a clear first image.

▲ Hyperspectral image of Lake Wurucuo in Tibet (L0)

The satellite is designed to have a lifespan of 3 years and will operate in a sun-synchronous orbit with an initial altitude of 500 km, an orbital period of approximately 97.5 min, and a local time of 11:30 AM at the descending node.

This satellite fully embodies the payload-centric design philosophy, with its main payloads being a hyperspectral imaging camera and a panchromatic camera. The hyperspectral imaging camera operates in the visible-near-infrared band, with a ground resolution of 40m@500km, a swath width of 80km@500km, and 150 spectral channels. It features advantages such as miniaturization, large relative aperture, low spectral line curvature, and minimal color distortion. The panchromatic camera employs a planar array imaging system, using a planar array scanning method to acquire visible-near-infrared spectral images of ground targets, with a ground resolution of 10m@500km and a swath width of 80km@500km.

During the satellite's on-orbit operation, relying on the optical remote sensing satellite ground application system, an image analysis and ground calibration subsystem and an image processing center are formed. The main function is to perform on-orbit calibration and verification of satellite geometric parameters. Key tasks include image quality analysis, image radiometric and geometric calibration, and image quality enhancement modules. Currently, the parsing and splitting of the downloaded raw data, the stitching and registration of strip data, and the image scene segmentation and cataloging have been completed to generate L0-level products. Subsequent work will involve relative radiometric correction, inter-band registration, MTF restoration, RFM model correction, and image fusion of the L0-level data, achieving standardized and rapid processing of multi-sensor data and quickly providing users with standardized products of stable and reliable quality.

As the first hyperspectral remote sensing satellite independently developed by CAS Xiguang Aerospace, the "Xiamen Science and Technology No. 1" satellite (XIGUANG-003) marks a crucial step in the construction of CAS Xiguang's remote sensing constellation. During the satellite's design and development, CAS Xiguang Aerospace fully leveraged its technological advantages and adhered to a path of technological innovation, smoothly coordinating the smooth progress of a series of tasks from design, processing and procurement, assembly and debugging, large-scale environmental testing, to delivery and acceptance. With the strong collaboration of the manufacturer, launch service provider, telemetry and data transmission service provider, and insurance provider, a powerful synergy was formed, successfully achieving the launch and on-orbit operation of the "Xiamen Science and Technology No. 1" satellite (XIGUANG-003).

"Xiamen Science and Technology No. 1" satellite (XIGUANG-003)

Effective load environmental mechanical test

Effective load environmental thermal test

Whole-star desktop joint test

Payload delivery and whole-satellite testing

Large-scale whole-satellite test

The test team set off

Launch site work

The launch mission was a complete success.

Satellite arrives at Xi'an

Satellite arrives at Xiamen station

Satellite data download

Generate L0 level image map

In the "Xiamen Science and Technology No. 1" satellite (XIGUANG-003) mission, CAS Xiguang Aerospace, together with numerous partners including Shanghai Aerospace Technology Co., Ltd., Shanghai Lizheng Satellite Application Technology Co., Ltd., Beijing Aerospace Yuxing Technology Co., Ltd., Beijing Xinghe Power Equipment Technology Co., Ltd., and PICC Property and Casualty Company Limited, worked hand in hand and devoted themselves to ensuring the successful development and launch of the mission. CAS Xiguang Aerospace expresses its sincere gratitude to all its partners for their collaborative efforts!

Standing at a new historical starting point, CAS Xiguang Aerospace will continue to focus on hyperspectral technology, adhere to the "payload-centric spaceborne integration" technical route, and comprehensively promote the construction of the CAS Xiguang Aerospace 108-satellite remote sensing constellation. Through satellite remote sensing, it will provide assistance to various fields such as national natural monitoring, carbon neutrality, national defense and security, environmental monitoring, marine monitoring, agriculture and forestry, emergency management, urban planning, meteorology and hydrology, and disaster reduction and relief, accelerate the development of smart cities, promote economic and industrial upgrading, and strive to accelerate the construction of my country's space power.