The State Administration for Market Regulation has recently approved and issued a series of new national standards for the space sector, including the "Requirements for Flat-Stacked Satellite-Launch Vehicle Mechanical Interfaces" and the "Requirements for Global Navigation Satellite System (GNSS) Positioning Augmentation Centers."

The national standard for "Requirements for Flat-Stacked Satellite-Launch Vehicle Mechanical Interfaces" integrates the development experience from projects like the Star Network and Qianfan constellations. It focuses on standardizing and unifying the design of mechanical interfaces between flat-stacked satellites and launch vehicles, providing crucial common technical support for China's large-scale construction of low Earth orbit (LEO) constellations.

This standard specifies the terminology, definitions, and mechanical interface design requirements for components such as the flat-stacked satellite assembly, individual flat satellites, stacking columns, and hold-down and separation mechanisms. It defines recommended values for interface dimension series and outlines requirements for interface verification analysis and experimental validation.

Applicable to the satellite-launch vehicle interface design for LEO satellite internet projects like the Guo Wang and Qianfan constellations, this standard will significantly advance the standardization of mechanical interfaces for related products. This enhances product universality and interchangeability, meeting the urgent needs for the large-scale deployment, cost-effective manufacturing, and rapid network launch of LEO constellations.

The issuance and implementation of this standard mark a significant step in China's standardization efforts within the flat-stacked satellite domain, injecting new momentum into the nation's development as a leading space power.

The two other standards, "Requirements for Global Navigation Satellite System (GNSS) Positioning Augmentation Centers" and "Classification Codes for Global Navigation Satellite System (GNSS) Receivers," are identical adoptions of corresponding ISO international standards. They provide critical guidance for the development of GNSS application technologies and the definition of related products and services.

The "Requirements for Global Navigation Satellite System (GNSS) Positioning Augmentation Centers" standard, identical to ISO 24246:2022, addresses service types such as real-time sub-meter to decimeter-level positioning, real-time centimeter-level positioning, and post-processing geodetic positioning. It provides system definitions, specific technical requirements for services, verification, and maintenance. Appendices offer internationally recognized references for issues like cross-border data exchange, augmentation data transmission, interference and spoofing, and positioning quality assessment methods.

The "Classification Codes for Global Navigation Satellite System (GNSS) Receivers" standard, identical to ISO 24245:2023, establishes clear classification rules and a coding system. It unifies the classification code specifications for internationally traded products and GNSS receiver identification, which are widely used in global commercial applications and government procurement, effectively promoting the international adoption of GNSS technology.

The release of these two national standards will effectively address the domestic industry's practical need for high-precision positioning services and products to align with ISO technical specifications and enter the international market, thereby facilitating the international development of satellite navigation applications.