High-Precision GNSS Survey Receivers

CHC Navigation (Huace Daohang, 华测导航) is a Chinese manufacturer of professional-grade high-precision GNSS equipment for surveying, engineering, and GIS applications. The company produces dual-frequency and triple-frequency RTK (Real-Time Kinematic) GNSS receivers that achieve centimeter-level positioning accuracy by correcting satellite signal errors using a base station or CORS network.

CHC’s product line includes GNSS receivers (i90, i50, i70 series), UAV-integrated GNSS units, marine GNSS receivers, and machine-control GNSS systems for construction and agriculture. All CHC receivers are multi-constellation, supporting BeiDou-3 (China’s global system), GPS, GLONASS, Galileo, QZSS, and NavIC simultaneously — ensuring maximum satellite availability in challenging environments.

For space-adjacent applications, CHC supplies GNSS base station reference receivers and network RTK infrastructure components used as part of GNSS augmentation systems (CORS networks) that improve positioning for aviation and precision industrial applications. CHC exports to 140+ countries and holds ISO 9001 and CE certifications. The company is headquartered in Shanghai, China, and is listed on the Shanghai STAR Market. CHC is among the top 5 precision GNSS manufacturers globally by unit shipments.