Hemisphere GNSS’ Crescent® single-frequency, multi-GNSS technology has a long-established benchmark for performance, versatility, and value, offering a variety of accuracy and feature options including Differential GNSS (DGNSS) and SBAS accuracies of 30 cm to centimeter-level RTK. Patented GNSS features such as e-Dif® and COAST™ are also available to extend the performance when DGNSS signals are not available.
Our Crescent GNSS technology allows single-frequency receivers to deliver higher update rates and noise-reduced raw measurements to enable more advanced applications and sophisticated configurations.
Crescent technology uses GNSS signal data from both carrier phase and code phase signals. Its multipath mitigation architecture significantly reduces multipath errors. Through correction options such as DGNSS, SBAS and RTK, Crescent-based products can be scaled in accuracy from a sub-meter factory positioning to centimeter-level, post-processing accuracy.
Crescent technology computes 20 independent solutions per second, providing control loops with more immediate information, which ultimately improves stability. This is ideal for fast and smooth navigation, guidance, and high-dynamics applications. Users can select output rates from lower than 1 Hz to as high as 20 Hz, allowing them to tailor the output to their application requirements.
COAST™ technology provides accurate, minimal position drift during temporary loss of differential signal corrections and maintains sub-meter accuracy up to 40 minutes after differential signal loss. This option provides outstanding performance in environments where maintaining a consistent differential link is difficult or not feasible.
Our patented e-Dif® (Extended Differential) technology limits position drift when differential corrections are unavailable or cost-prohibitive. It delivers improved pass-to-pass and relative accuracy, and allows users the ability to recalibrate at a reference location for improved absolute accuracy.
Hemisphere GNSS’ Eclipse™ multi-frequency, multi-GNSS technology delivers the highest level of performance and versatility with GPS, GLONASS, BeiDou, Galileo, and QZSS support. Paralleling Crescent technology, Eclipse delivers reliable centimeter-level accuracy.
The superior performance and versatility of Eclipse-based boards allow OEM customers to integrate the technology into a wide variety of precise applications including navigation and machine control. Depending on the application, Eclipse users can record and post-process GNSS data or choose from several differential solutions including RTK, Atlas and SBAS (WAAS, EGNOS, etc.).
As an affordable dual-frequency solution, Eclipse receiver technology offers several other advantages to the OEM integrators including pin-compatible versions for Crescent and other common industry-standard boards, multiple serial and USB ports, and no-cost firmware upgrades.
Hemisphere GNSS’ next-generation Athena GNSS engine offers significantly-enhanced performance over our legacy RTK engines. Often exceeding performance offered by other industry leaders, Athena provides a future-proof foundation enabling market-defining performance, flexibility, and reliability.
Initialization time – By using GPS, GLONASS, and BeiDou in the initialization process, Athena is one of the most reliable, consistent initialization performers in the industry, initializing in less than 15 seconds at better than 99.9% reliability.
Robustness – Atlas offers extremely high productivity under the most aggressive of geographic- and landscape-oriented environments for GNSS, while delivering up to 50% better performance in user tests matched against the best competitive systems on the market. By having no regional restrictions, you can use Athena virtually anywhere high-accuracy GNSS receivers can be used. Athena’s innovative design makes it a state-of-the-art GNSS technology and excels at the rigorous GNSS requirements of multiple segment customers in Machine Control, Survey, and high-accuracy GIS.
Performance on long baselines – Athena offers industry-leading position stability for long-baseline applications, with position quality often exceeding the performance of the best-of-breed RTK systems on the market.
Performance under scintillation – Athena offers sustained accuracy under ionospheric scintillation activities, providing one of the most reliable ways in the market to work with GNSS in scintillation-affected areas. By improving the ionospheric and tropospheric modeling and monitoring in Athena, Hemisphere has significantly reduced measurement errors during scintillation events, greatly improving performance.
Flexibility – Designed to work with your current portfolio of products, Athena will work seamlessly with 3rd-party RTK bases when using RTCM v3.1 or later. Athena supports the RTCM protocol that is used on most VRS networks.
Easy to use – Hemisphere designed Athena with ease of use in mind. Athena runs on multi-frequency, multi-constellation OEM boards (currently P302, P303, P306, P307, P320, H320 and H321) and products (currently A325, AtlasLink, R330, S320, V320, and VS330). If your receiver supports Athena, you can download the appropriate firmware from www.HGNSS.com. If your current unit is already subscribed to legacy Eclipse RTK, it will continue to work with Athena once upgraded.
Learn More - Athena - Webinar Presentation - Introduction to Athena
Learn More - Athena - FAQ