The Toknav TSA1000 is an external GNSS survey antenna supporting GPS, GLONASS, BDS, GALILEO, QZSS, SBAS and IRNSS signals for multi-system positioning. It is built for land and marine surveying, dredging, and structural/landslide monitoring, offering millimeter-level accuracy with a stable phase center and strong resistance to interference. It is IP67-rated for dust and water resistance and rated for up to 95% non-condensing humidity, with a 40dB typical LNA gain and axial ratio of <=3dB.