As the company's core differentiating technology foundation, our world-leading LEO quantum-secure satellite constellation technology system achieves deep integration of quantum security technology and aerospace engineering. Guoxing Quantum is one of the few private enterprises globally with full-process capabilities spanning in-house development of satellite-borne quantum security payloads, LEO quantum satellite constellation design, and network operations.
Independently developed μrad-level satellite-ground laser Acquisition, Tracking and Pointing (ATP) system, enabling stable laser link establishment in high-speed LEO satellite movement scenarios.
Overcame technical challenges such as high-speed LEO satellite movement, atmospheric turbulence, and background light interference, achieving high-precision, rapid laser link acquisition and tracking.
Tracking accuracy ≤5 μrad, link establishment time ≤3 s, supports 100 Gbps and above line-rate data transmission, link bit error rate ≤10⁻⁹.
Compared with traditional microwave communication, laser communication offers higher bandwidth, better confidentiality, and stronger anti-interference capability, making it the core enabling technology for high-speed quantum-secure satellite-ground / inter-satellite communication.
Based on the quantum no-cloning theorem and the uncertainty principle, we independently developed miniaturized, lightweight satellite-borne QKD payloads that enable secure key generation and distribution over satellite-ground and inter-satellite links.
Overcame the challenges of miniaturization, lightweight design, and high reliability for satellite-borne QKD payloads. Our in-house ultra-compact QKD payload has a volume ≤3 L and a weight ≤5 kg, compatible with 10–15 kg class micro/nano-satellite platforms — the smallest and lightest satellite-borne QKD payload in China.
Single-satellite key generation rate ≥10 kbps at 550 km orbit, bit error rate ≤1%, supports the "one-time pad" encryption mode; the key generation process is immune to eavesdropping and unbreakable.
Unlike ground-based fiber-optic QKD networks, satellite-borne QKD is not limited by geographic conditions and can achieve global wide-area coverage, fundamentally solving the inability of ground QKD networks to cover remote areas and cross-border scenarios.
Deeply integrated with our in-house quantum security chip capabilities, the satellite platform natively integrates a dual engine of NIST-standardized PQC algorithms and Chinese national cryptographic (SM) algorithms, using FPGA hardware acceleration to solve the problem of limited on-board computing power.
Achieved hardware-level optimization and acceleration of PQC algorithms on satellite platforms, improving algorithm execution efficiency by more than 50x to meet the encryption demands of high-speed satellite-ground / inter-satellite communication.
Supports 100 Gbps and above line-rate encrypted transmission with encryption latency ≤1 ms, defending against quantum-computing attacks on traditional RSA/ECC cryptosystems.
Realized satellite-borne fusion of the "QKD + PQC" dual encryption system, combining QKD's information-theoretic security with PQC's high bandwidth and flexibility to provide dual security assurance for satellite-ground communication.
