Chinese RF Sensing Startup StarRF Closes Pre-A+ Round Led by Provincial Investor

StarRF, a Tianjin-based startup building an orbital constellation to detect and geolocate radio-frequency emissions, has closed a Pre-A+ funding round as China's commercial space sector expands. The company, formally named Xingkan Jiuzhou Technology, announced the round on Aug. 21, marking further growth for space-based RF sensing in China.

Founded in November 2023, StarRF is developing a low Earth orbit constellation called Diting to monitor electromagnetic spectrum activity across land and sea. The company is building proprietary technology for radio signal reception, demodulation, analysis and transmitter geolocation. The new funding will go toward research and development, market expansion and team building.

The round was led by Shandong state-owned investor Luxin Venture Capital, with Tianqi Capital and Haitang Fund also participating. Existing investor Junyuan Capital joined as well. The amount was not disclosed. Junyuan Capital, in a portfolio update following the round, stated that StarRF will use three-satellite formation flying for space-based RF data collection and analysis, a method that echoes China's Yaogan triplets, groups of satellites long assessed by open-source analysts as electronic intelligence assets flown by the People's Liberation Army in triangular formation to detect and geolocate radio emissions from naval vessels.

Junyuan Capital also stated that the company has been dubbed China's HawkEye 360 within the industry, and at least two of its investors have used the comparison. HawkEye 360, which went public in May, reported record international revenue of $21 million in the second quarter, up 134% year-over-year, with international customers making up about 42% of its $49.8 million in quarterly revenue. The company has disclosed more than $100 million in recent international awards, including work on a European electronic-warfare program and a multiyear contract supporting the Indian Navy.

StarRF's backers have said less about revenue or named customers but stated a strategic rationale for investing. Junyuan said the constellation's data products are aimed at radio spectrum management, maritime and shipping, public security, safety and railway sectors. An earlier Pre-A round announcement cited public and national defense security as a use case.

The investor makeup follows a pattern in China's commercial space sector, indicating backing from capital linked to provincial government and an apparent absence of strategic investment from state-owned space and defense giants CASC and CASIC. Luxin Venture Capital is tied to Shandong province's state-owned asset system, while an earlier-round backer, Haihe Fund, carries a Tianjin-linked name, suggesting StarRF's growth is being driven at least partly by regional industrial policy. Such policies have strengthened following clear indications of the strategic importance of commercial space by China's central government. The local support and the business case statements suggest Beijing is allowing investment in space-based RF sensing, alongside established remote sensing, communications and space computing sectors.

The business model places StarRF in the same commercial niche as U.S. and European firms such as HawkEye 360, BAE's Azalea and Unseenlabs, which operate constellations that detect and triangulate RF emitters for applications spanning maritime domain awareness to GPS jamming detection.

StarRF did not disclose a timeline for the Diting constellation's first launches or a clear constellation size.