Heinrich Hertz Satellite (H2Sat): Advancing Germany’s Space-Based Communications Technology

The Heinrich Hertz satellite (H2Sat) is a German space mission designed to test and demonstrate advanced communications technologies in orbit. Its primary objective is to explore how next-generation satellite systems can deliver high-speed broadband connectivity to mobile end users through innovative hardware and software.

The project is led by OHB System AG on behalf of the German Aerospace Center (DLR), with funding from the German Federal Ministry for Economic Affairs and Climate Action (BMWK) and support from the German Federal Ministry of Defence (BMVg). The contract to build, launch, and operate the satellite was signed with OHB in June 2017.

Mission Objectives

• Scientific and technical validation of new communications hardware and software in space.

• Experimental testing of pre-operational satellite communication services for German public-sector users.

• Research platform for universities, research institutions, and industry to conduct scientific experiments in space-based communications.

• Support for military communications by providing independent and secure capabilities to the German Bundeswehr.

Strategic Importance

The Heinrich Hertz mission also contributes to broader European goals. It aligns with the ESA ARTES 11 program, which aims to strengthen European and German expertise in satellite systems and telecommunications payloads. The mission supports the systematic development of capabilities within Germany’s growing space technology sector.

The satellite is based on OHB’s SmallGEO satellite platform, designed for geostationary missions and equipped for flexible payload integration.

Launch Details

The Heinrich Hertz satellite was successfully launched by Arianespace in July 2023, marking a significant milestone for German space communications and defense innovation.