央媒看长春 | 中国日报报道《CGSTL hits major mapping milestone》

CGSTL hits major mapping milestone

长光卫星取得里程碑式的重大突破

A commercial satellite enterprise announced recently that it has established a three-dimensional mapping satellite constellation comprised of 19 satellites, the largest of its kind, and released a series of high-precision 3D data products based on the constellation.

Changchun, Jilin province-based Chang Guang Satellite Technology Co Ltd (CGSTL) said that the constellation consists of a new generation of high-resolution optical remote-sensing satellites capable of high-precision stereo mapping.

It supports various stereo imaging acquisition modes, including single-satellite along-track stereo, dual-satellite formation stereo, and multi-satellite multi-angle stereo.

The dual-satellite formation can image a single strip up to 1,600 kilometers in length, with a single stereo imaging coverage area exceeding 20,000 square kilometers.

总部位于吉林省长春市的长光卫星技术股份有限公司日前宣布，已成功发射19颗具备高精度立体测绘能力的新一代高分辨光学遥感卫星，建成当前全球规模最大的立体测绘星群。基于该星群体系，长光卫星正式发布高精度三维立体成果矩阵。

该星群支持单星同轨立体、双星编队立体、多星多视角立体等不同的立体成像获取模式。双星编队单条带成像最长可达1600公里，单次立体成像面积超过2万平方公里。

The commercial space industry is currently entering a fast track of large-scale development, with the number of in-orbit satellites continuing to grow and application scenarios constantly expanding, said Hu Yan, board secretary of the company.

Hu said that as a key application direction of satellite remote sensing, 3D stereo mapping plays an increasingly critical foundational role in areas such as natural resource surveying, urban planning and construction, disaster assessment and management, and infrastructure monitoring.

公司董事会秘书胡雁表示，当前，商业航天产业进入规模化发展快车道，在轨卫星数量持续增长，应用场景不断深化拓展。

三维立体测绘作为卫星遥感的重要应用方向之一，在自然资源调查、城市规划建设、灾害评估管理、基础设施监测等领域发挥着日益关键的基础性支撑作用。

To further enhance its stereo-mapping service capabilities, CGSTL has addressed long-standing industry pain points, including long data acquisition cycles, insufficient resolution and scarcity of multi-angle data sources.

The company has successively overcome key technologies such as onboard integrated intelligent imaging, multi-satellite formation coordinated stereo observation, and automated multi-angle stereo model production.

She said that by leveraging large-scale constellation collaborative scheduling, CGSTL has achieved significant advances in stereo imaging: transitioning from "single-pass stereo acquisition" to "multi-satellite collaborative multi-angle observation", from "part mapping" to "large-area stereo coverage", and from "periodic updating" to "high-frequency dynamic reconstruction".

为进一步提升立体测绘服务能力，长光卫星立足行业长期存在的立体数据获取周期长、分辨率不足、多视角数据源稀缺等痛点，先后攻克了星载融合智能成像、多星编队协同立体观测、多视角立体模型自动化生产等关键技术。

依托大规模星群协同调度，长光卫星在立体成像领域实现了从“单次立体获取”向“星群多视协同”、从“局部测图”向“大区域立体覆盖”、从“周期性更新”向“高频动态重建”的转变。

At the basic product level, in addition to providing dual and triple-stereo image pairs through single-satellite maneuvering, the company can also acquire five-view stereo image pairs via multisatellite collaboration.

This multi-angle observation effectively compensates for occlusions and blind spots in building facades, complex roof structures and steep terrains, significantly improving the texture completeness, geometric reliability and detail expression of 3D models, said Hu.

At the advanced product level, the company can efficiently produce high-precision digital surface models, high-precision digital elevation models, 3D white models and 3D reality models.

Relying on its self-developed high-precision stereo data production engine, CGSTL has substantially improved both the production efficiency and response speed of advanced products while maintaining product accuracy.

基于星群强大的立体数据获取能力，长光卫星打造了涵盖基础产品与高级产品的三维立体成果矩阵，其精度指标达到国际先进水平。

在基础产品层面，除利用单星机动能力提供双视立体、三视立体像对数据外，还可依托星群多星协同实现五视立体像对数据获取，通过多角度观测有效补偿建筑物侧面、复杂屋顶结构及陡峭地形中的遮挡与盲区，显著提升三维模型表面纹理的完整性、几何可靠性与细节表达力。

在高级产品层面，可高效生产高精度数字表面模型（DSM）、高精度数字高程模型（DEM）、三维白模及实景三维模型。长光卫星基于自主研发的高精度立体数据生产引擎，在保证产品精度的同时，大幅提升了高级产品的生产效率和响应速度。

Hu said that the product matrix can be widely applied in fields such as natural resource surveys and management, mapping, planning and engineering surveys, water conservancy and environmental protection, energy infrastructure monitoring, emergency disaster assessments and digital city construction.

In special scenarios where drone flights are prohibited or data acquisition is restricted, it can serve as a reliable alternative data source, offering dependable support for related operations.

The company has established a mature full-chain system covering satellite design and manufacturing, in-orbit operation and control, and data application.

据介绍，该成果矩阵可广泛应用于自然资源调查与管理、测绘规划与工程勘察、水利与环境保护、能源基础设施监测、应急灾害评估、数字城市建设等领域，并为“实景三维中国”建设提供常态化数据支撑。在无人机禁飞或数据获取受限等特殊场景下，亦可作为可靠的替代数据源，为相关业务提供可靠保障。

Changchun is striving to become a significant source of global photonic technology innovation and a key supplier of high-end photonic products.

The recent development of Changchun-based CGSTL marks a major milestone breakthrough in the field of satellite technology and applications in China.

At a promotion meeting for the “China Optoelectronics City” project held in Changchun on Sept 4, the city announced that it will support leading chain‑enterprises such as CGSTL to become bigger and stronger, while driving the coordinated growth of a large number of supporting small and medium‑sized enterprises.

The meeting also stressed that Changchun will concentrate its efforts on advancing six major sectors, including semiconductors and high‑end manufacturing, and satellite technology and applications, with the goal of expanding the city’s optoelectronics industry to 160 billion yuan ($23.86 billion) by the end of the 15th Five‑Year Plan period (2026–2030).

长春市打造全球光电技术创新重要策源地和高端光电产品关键供给地。此次总部位于长春市的长光卫星宣布已建成目前全球最大立体测绘星群，标志着我国在卫星技术与应用领域迎来里程碑式的重大突破。

9月4日长春市召开的“中国光电城”项目建设推进大会指出，该市将支持长光卫星等龙头链主企业做大做强，带动一大批配套中小企业协同成长。

这次会议指出，长春市将集中力量推动半导体与高端制造、卫星技术与应用等六大领域，力争“十五五”末全市光电产业规模达到1600亿元。

来 源：中国日报