China Science StarMap applies for patent related to space collision early warning, solves CPU assessment challenges, balances real-time accuracy for early warning

March 21 News: According to information from the National Intellectual Property Administration, China Science Star Map Measurement and Control Technology Co., Ltd. has applied for a patent titled “A Space Object Collision Warning Method Based on GPU Parallel Computing and J2 Perturbation Terms.” The application publication number is CN121680773A, the application number is CN202511893055.4, the publication date is March 17, 2026, and the application date is December 16, 2025. Inventors include Cui Zhonglin, Jiang He, Niu Dong, Pan Youyu, Xu Kaikai, and Li Chuangang. The patent agency is Hefei Changyuan Patent Agency (General Partnership), with patent agent Jin Hongyan. The classification code is G06F7/483.

Patent Abstract: The invention discloses a space target collision warning method based on GPU parallel computing and J2 perturbation terms, aiming to solve the problems of high computational complexity and poor real-time performance in existing CPU-based space target collision risk assessment. It proposes a multi-level screening method based on GPU parallelism and J2 perturbation. The steps include: reading TLE data and calculating perihelion/aphelion and reference check points on GPU; filtering based on combinations of C(N,2), ephemeris, altitude, and geocentric distance; within check intervals, using the check point state as initial value, applying single-precision J2-RK iteration to screen and obtain event NJ2pre and tJ2pre; performing double-precision J2-RK screening on events before and after the check segments to output the minimum distance distJ2 and tJ2; finally, using parallel precise calculations with SGP4/SDP4 to obtain the minimum distance distDC, relative velocity, collision probability, and other parameters. This method balances real-time performance and accuracy, significantly reduces the O(n²) computational cost, and is suitable for large-scale in-orbit target warning.

Star Map Measurement and Control was established on December 14, 2016, and listed on the Beijing Securities Exchange on January 2, 2025. Its registered and office addresses are both located in Hefei, Anhui Province. The company is a leader in domestic space measurement and control management and space digital simulation, with strong technical strength and market competitiveness.

Main business includes space measurement and control management and space digital simulation. It belongs to the Shenwan industry category: Computer - IT Services II - IT Services III, involving concepts such as IT services, Beijing Stock Exchange listed companies, artificial intelligence, and related sectors.

In terms of operating performance, in 2025, Star Map Measurement and Control achieved revenue of 321 million yuan, ranking 2nd/3rd in the industry. Although it is below the first-place Capital Online with 1.237 billion yuan, it exceeds the industry average of 583 million yuan and is at the industry median.

Its main business components include: technology development and services accounting for 245 million yuan (76.37%); system integration 44.147 million yuan (13.74%); ground measurement and control system construction 17.422 million yuan (5.42%); software sales 14.349 million yuan (4.47%). Net profit in 2025 was 101 million yuan, ranking 1st/3rd in the industry, far surpassing the second-place LianDi Information with 7.5786 million yuan, and significantly higher than the industry average of -16.8368 million yuan, above the industry median.

Recent patent applications by China Science Star Map Measurement and Control include:

[The list continues with additional patents, but for brevity, only the first 15 are shown here.]

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