DHU Research Team Pioneers High-tech Antenna Materials for World’s First High-orbit Satellite


The China National Space Administration (CNSA) recently announced that China has successfully launched the worlds first high-orbit synthetic aperture radar (SAR) satellite, L-SAR4 01. The satellite features a large ring-shaped SAR antenna that has been smoothly deployed, marking the satellites official commencement of operations. The pioneering work behind this achievement is attributed to the innovative efforts of Prof. Chen Nanliangs research team from the College of Textiles at DHU. Their breakthrough development, the ultra-fine metal monofilament mesh fabricmicrotension weaving technology”, has enabled the fabrication of a novel ultra-light reflective surface material for the satellites expansive deployable antenna. This accomplishment again underscores DHUs research prowess and impact on China’s aerospace endeavors.

L-SAR4 01, equipped with a generously proportioned annular unfolding reflective surface, presently boasts the largest caliber, most intricate structure, greatest number of deployment stages, and longest development timeline among Chinas antennas. Prof. Chen Nanliangs team collaborated with Changde Textile Machinery Co., Ltd. to discard conventional mesh warp weaving paradigms, ushering in the innovative micro-tension warp-knitted mesh fabric weaving technique and corresponding equipment. This groundbreaking approach markedly reduces the weight of the new antennas reflective surface. The expansive ring-shaped antenna deployment area is akin to the size of a basketball court, significantly elevating the reflective surface area of the antenna and enhancing the communication capabilities of high-orbit satellites.

As the globes pioneer high-orbit SAR satellite to enter the project implementation stage, L-SAR4 01s singular imaging coverage encompasses nearly 1/6 of Chinas landmass. It effectively integrates census and fine modes, setting it apart as Chinas foremost remote sensing satellite within the industry. Its future operational deployment will further refine Chinas space-based disaster monitoring system, enrich observation capabilities in critical regions, and comprehensively elevate the nations disaster prevention, mitigation, and relief capabilities.

(Prof. Chen Nanliangs Research Team at Work)

(The Team and Manufacturers Working on the New Equipment)