GIS measuring equipment mainly comprises GNSS High-precision positioning board, antenna, wireless communication module, central processing unit, memory module and user operating software. NovAtel’s High-precision, highly reliable GNSS OEM boards have been being the core part of measuring products of world-renowned manufacturers of instruments of survey and mapping (Leica, Sokkia, etc.). To meet specific needs of Chinese market, BDStar and NovAtel, based on NovAtel’s OEMV/OEM6 products, have developed the BDNAV products, which are self-branded and cost-efficient, and become the first choice of China’s leading manufacturers of instruments of survey and mapping, such as South Survey & Mapping, Hi-Target, and CTI, promoting the products of survey and mapping to be homemade.