GNSS Choke-ring Geodetic Antenna
Compatible with GPS, GLONASS, BeiDou, Galileo, and QZSS.
Multipath suppression from reflected signals.
Low noise amplification with high phase-center accuracy.
The C220 GR2 antenna supports GPS, GLONASS, Galileo, BeiDou and QZSS. Its multi-constellation and multi-frequency capabilities ensure compatibility with current and future signals, making it suitable for global geospatial operations.
The C220-GR2 excels at minimizing signal interference from reflections, known as multipath. This feature is critical for high-precision applications, such as reference stations, ensuring optimal GNSS signal reception and reliable positioning results, even in complex environments.
CHCNAV choke ring antennas are designed for extreme accuracy, featuring high phase-center stability across all frequencies. The precision of the C220-GR2 ensures consistent measurements for scientific studies, structural monitoring, and long-term reference station use.
Constructed from rugged materials to withstand extreme environments, the C220-GR2 antenna offers reliable performance in adverse conditions. With IP67-rated water and dust resistance, it is built for prolonged outdoor use, ensuring long-term durability with minimal maintenance.
GNSS CORS Networks
Seismic Monitoring
Structural Monitoring
GNSS Choke-ring Geodetic Antenna
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CHCNAV P5
GNSS Geodetic Reference Station
CHCNAV CGBAS
Advanced Server-Based GNSS Augmentation Platform
The primary difference lies in their design and functionality. A GNSS choke ring antenna has a distinctive metal ring structure that reduces signal multipath (reflections from nearby surfaces), enhancing signal quality, especially in environments prone to interference. In contrast, a GNSS geodetic antenna is a more general-purpose, high-precision antenna designed to receive signals from multiple GNSS constellations (GPS, GLONASS, Galileo, etc.) but lacks the specialized choke ring for suppressing multipath interference.
GNSS choke ring antennas are commonly used in high-precision applications such as reference stations for Continuously Operating Reference Stations (CORS), scientific research, and geodetic networks where signal accuracy is critical. GNSS geodetic antennas, while still precise, are used in broader applications such as land surveying, mapping, and construction, where conditions may not require the advanced multipath rejection provided by a choke ring antenna.
GNSS choke ring antennas are equipped with several metal rings (the choke rings) that trap and suppress multipath signals, improving accuracy by minimizing interference from reflected signals. Geodetic antennas, while optimized for receiving multi-frequency GNSS signals and offering strong signal quality, do not have these additional structures for multipath mitigation, making them more susceptible to signal degradation in reflective environments.
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