News Categories

In the fields of computational optical imaging and hyperspectral remote sensing, spatiotemporal joint modulation Fourier transform interferometric spectral imaging technology, with its advantages of high throughput, significant signal-to-noise ratio gain, and all-solid-state hardware without moving parts, has become an indispensable technical path for aerospace payloads and precision laboratory detection. As the most representative architecture in this field, the Sagnac triangular common-path interferometer utilizes its inherent vibration resistance and compact physical structure to achieve efficient coupling and high-fidelity acquisition of target 3D information on the detector image plane through a clever combination of lateral shearing mechanism and carrier push-broom motion. This paper will focus on the optical physics of push-broom systems, deeply analyze the generation mechanism and spatiotemporal mapping law of interferometric field data, and discuss in detail the discretization extraction process of the interferometric matrix, aiming to provide rigorous theoretical basis and technical support for improving the spectral reconstruction accuracy in complex remote sensing environments.

Signal-to-noise ratio (SNR) is a crucial indicator of the detection performance of imaging spectrometers, directly impacting the quality of spectral information acquisition from ground objects. In spaceborne imaging spectrometers, SNR determines the effective identification capability of spectral features of targets such as vegetation, water bodies, and minerals. Because observation geometry and surface reflectance characteristics significantly influence entrance pupil radiance, the SNR of imaging spectrometers varies considerably under different solar altitude angles and surface reflectance conditions. Therefore, it is necessary to quantitatively predict the SNR based on typical observation conditions during the instrument design and performance evaluation phases.

Methane (CH4) is a radioactive and chemically reactive gas in the atmosphere, influencing not only the radiation balance of the Earth-atmosphere system but also playing a crucial role in atmospheric and stratospheric chemical processes. As the second largest greenhouse gas after carbon dioxide, methane's annual average concentration is more than 2.5 times higher than pre-industrial levels. Its global warming potential (GWP, the ability to trap heat in the Earth's atmosphere) is approximately 30 times that of carbon dioxide on a centennial timescale and approximately 84 times on a 20-year timescale. Methane has a relatively short atmospheric lifetime (approximately 12 years), while the effects of carbon dioxide can last for centuries. Compared to the chemically stable carbon dioxide, controlling methane emissions has an immediate effect on achieving carbon neutrality and mitigating global warming.

Recently, the Shaanxi Provincial Department of Industry and Information Technology officially announced the proposed list of a new batch of "Key Industrial Chain Leaders in Shaanxi Province." Among this authoritative list, which includes 103 leading enterprises in the province, Xi'an Institute of Optics and Precision Mechanics CAS Aerospace Science and Technology Group Co.,LTD is listed as...aerospace industry chainAmong the representative companies, it stands out as the only provincial-level reserve company selected in this batch.

January 23rd,"WIF2025 Innovation Pioneers Forum and Commercial Spaceflight New Decade Ceremony"At a successful event in Beijing, an authoritative list summarizing the turbulent journey of China's commercial aerospace industry over the past decade (2015-2025) was officially unveiled. At this grand event aimed at defining the future and paying tribute to the past, Xi'an Institute of Optics and Precision Mechanics CAS Aerospace Science and Technology Group Co.,LTD stood out. At just five years old, it distinguished itself from hundreds of outstanding companies that emerged over the past ten years, standing shoulder-to-shoulder with many industry giants who have cultivated their expertise for many years, and winning one of the conference's highest honors—"Top Ten Outstanding Enterprises in Commercial Aerospace Over the Decade." Simultaneously, the company was also once again selected for the "2025 China Top 100 Commercial Aerospace Enterprises" list.

Five years of hard work have enabled us to realize our aerospace dream.Five years of hard work have allowed the hyperspectral light to illuminate the sky.On January 20, 2026, a grand celebration for all Xiguang employees concluded in Xi'an.

In lake and wetland monitoring supported by hyperspectral remote sensing technology, total suspended sediment (TSM) is a key indicator for evaluating water transparency and lake siltation. As a transient lake, Hongze Lake has a large fluctuation in water area with water level and an average water depth of only 1.5 m. The complex sources of sediment and the distribution of aquatic vegetation constitute a unique spectral environment.

Recently, the independently developed by CAS Xi'an Aerospace..."Key Technologies for Hyperspectral Remote Sensing in Metal Mineral Detection and Direct Prospecting Applications"The project won the award.Second Prize of the Science and Technology Award for Nonferrous Metals IndustryThis is not only an industry certification of the company's technological strength, but also an important symbol of how my country's commercial aerospace remote sensing technology can empower the security of national strategic mineral resources and promote the digital transformation of exploration methods.

Carnarvon National Park, located in central Queensland, Australia, boasts spectacular sandstone canyons, ancient rock paintings, and diverse ecosystems. In December 2025, during the Southern Hemisphere summer, the region experienced nine consecutive days without rainfall, with daytime temperatures frequently exceeding 35°C. At least four fire spots were observed in Sentinel-2 imagery during the same period.

The Rumaila oil field is a supergiant oil field located approximately 50 kilometers west of Basra, Iraq (Figure 1), situated in a giant anticline rich in oil and gas on the edge of the Arabian Platform. Discovered in 1953, it is one of Iraq's largest and oldest oil fields, with estimated recoverable crude oil reserves of up to 17 billion barrels, ranking as the sixth largest oil field in the world in terms of current production. As a pillar of Iraq's oil industry, the stable production of the Rumaila oil field is of vital strategic importance to Iraq's economic reconstruction and national finances.