Core Technologies

The Driving Force

ASIC (Application Specific Integrated Circuit) Design

  • Full in-house GNSS receiver design
  • Customized analog and digital ASIC chip designs
  • Low-cost, accurate, and robust designs
  • Multiple ASIC related patents

GNSS Algorithms

  • GNSS position, velocity, and time algorithms, SBAS, Beacon, and L-band differential
  • RTK, satellite-band differential accuracy correction expertise
  • Multipath and scintillation mitigation expertise
  • Multiple GNSS algorithm related patents

Antenna Design

  • Robust multi-GNSS, multi-frequency designs
  • Superior multipath rejection
  • Onsite anechoic chamber
  • Multiple GNSS antenna design related patents

Software Design

  • Custom application for ease-of-use of GNSS modules and receivers
  • Multiple operating system platform designs
  • GradeMetrix™, LandMetrix™, and SiteMetrix™ application software

Positioning & Heading Technologies


Multi-Frequency Positioning & Heading Technology

Hemisphere’s Eclipse multi-frequency, multi-GNSS positioning and heading technology delivers the highest level of performance and versatility with GPS, GLONASS, BeiDou, Galileo, IRNSS, and QZSS support. Paralleling Crescent technology, Eclipse delivers reliable centimeter-level accuracy.

The superior performance and versatility of Eclipse-based boards allow OEM (original equipment manufacturer) customers to integrate the technology into a wide variety of precise applications. Depending on the application, Eclipse users can record and post-process GNSS data or choose from several differential solutions including RTK, Atlas GNSS global correction service (L-band), and SBAS (WAAS, EGNOS, etc.).

As an affordable multi-frequency solution, Eclipse receiver technology offers several other advantages to OEM integrators including pin-compatible versions for Crescent and other common industry-standard boards, multiple serial and USB ports, and no-cost firmware upgrades.


GNSS Positioning & Heading Compass Technology

Hemisphere’s Vector GNSS sensor technology and all-in-one compass solutions provide precise heading and positioning for marine users (including IMO (International Maritime Organization)-wheelmarked applications, hydrographic surveying, and other general marine navigation applications) and for the machine control market, including agriculture, heavy construction equipment, and any other industries where very accurate headings are critical.

The rugged and reliable design of these compasses make them ideal solutions to replace traditional gyrocompasses, at a fraction of the cost. Combining Hemisphere’s single and multi-frequency technologies and multipath-resistant antennas, the Vector compasses and sensor technology bring a collection of robust features including heave, pitch, and roll output as well as NMEA 0183 and NMEA 2000 support.

Hemisphere’s Vector technology computes the heave, pitch, or roll angle while stationary or in motion allowing for heading accuracy of up to 0.01 degree depending upon the product selected. A variety of differential correction methods also make it possible for Vector products to provide sub-meter to centimeter-level RTK position accuracy.

Heading Solutions for Machine Control - Overview Paper (English)

Lyra™ II

Digital ASIC Technology

The Lyra II digital ASIC incorporates a scalable design architecture to provide users with the most flexible and scalable GNSS positioning platform in the industry. Lyra II also delivers access to all the modern GNSS signals with very low power consumption making it an ideal option for integration into various mobile and unmanned applications. Its dedicated acquisition engine searches multi-hypothesis in parallel for better Time-To-First-Fix (TTFF) in cold-start and signal-degraded environments.

Hemisphere’s new Aquila wideband RF ASIC can receive multiple frequency bands and use integrated software to best handle incoming signals. Using flexibility to support different bandwidths, Hemisphere is positioned on the cutting-edge of signal acquisition to easily integrate new and future signals from each constellation.

Lyra, Aquila, & Cygnus - Brochure (English)


Interference Mitigation Technology

The all-new Cygnus interference mitigation technology incorporates the latest digital filtering technology and an integrated Fast Fourier Transforms (FFT) analyzer for real-time spectrum analysis and interference detection. The Cygnus architecture deploys precisely targeted technology in-band filtering measures with minimal impact or disruption to available GNSS constellation signals resulting in higher satellite availability in environments where band interference is present. Cygnus also uses high-resolution Analog to Digital Converters (ADC) for superior anti-jamming performance.

Lyra, Aquila, & Cygnus - Brochure (English)


State-Of-The-Art, World-Class RTK GNSS Engine

Athena RTK is Hemisphere’s next-generation RTK engine designed to support all available constellations and take advantage of available new signals. This future-proof foundation enables Athena to have market-defining performance, flexibility, and reliability. Athena was designed to seamlessly integrate into existing product portfolios, supporting all major industry correction formats and standards.

• Initialization Time – By using GPS, GLONASS, BeiDou, Galileo, IRNSS, and QZSS 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 – Athena 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. With no regional restrictions, you can use Athena virtually anywhere high-accuracy GNSS receivers can operate. Athena’s innovative design makes it state-of-the-art and excels at the rigorous GNSS requirements of multiple segment customers in machine control, survey, high-accuracy GIS, and other applications requiring high-accuracy positioning.

• 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 works seamlessly with third-party RTK bases when using RTCM v3.1 or later. Athena supports the RTCM protocol that is used on most VRS networks.

• Ease-Of-Use – Hemisphere designed Athena with ease-of-use in mind. Athena runs on multi-frequency, multi-constellation OEM boards and products. If your receiver supports Athena, you can download the appropriate firmware. If your current unit is already subscribed to legacy Eclipse RTK, it will continue to work with Athena once upgraded.

Athena GNSS Engine – Overview Paper (English)


Scalable, Global GNSS Correction Service for All High-Precision Applications

Atlas is an innovative, industry-leading GNSS-based global L-band correction service, providing robust performance at market-leading prices. Atlas is a flexible and scalable service, delivering its correction signals via L-band satellites at accuracies ranging from sub-meter to sub-decimeter levels. Leveraging more than 200 reference stations worldwide and with L-band satellites distributing Atlas corrections, the entire globe is virtually covered. The Atlas GNSS global correction service provides correction data for GPS, GLONASS, BeiDou, and Galileo constellations.

• Positioning Accuracy – Atlas provides competitive positioning accuracies down to 4 cm RMS in certain applications, often exceeding competitive systems’ capabilities

• Positioning Sustainability – Cutting-edge position quality maintenance in the absence of correction signals, using Hemisphere’s Tracer™ technology

Scalable Service Levels

Service Level – Position Accuracy
Atlas Basic – 50 cm 95% (30 cm RMS)
Atlas H30 – 30 cm 95% (15 cm RMS)
Atlas H10 – 8 cm 95% (4 cm RMS)

• Convergence Time – Industry-leading convergence times of 10 – 40 minutes

• Global Ionospheric Model – Real-time ionospheric activity and data is sent to the receiver and allows Atlas-capable devices to adjust accordingly, providing excellent convergence performance

Advanced Technology Features

Making Our Technology Work for You

Atlas aRTK™
Satellite-Based RTK Augmentation

Powered by Atlas GNSS global correction service, the innovative aRTK technology operates on any Atlas-capable device by enabling it to operate with RTK-level accuracy, availability, and reliability when RTK corrections fail. If the unit is Atlas-subscribed, it will continue to operate at the subscribed service level until RTK is restored.

Atlas AutoSeed™
Advanced Stationary Re-Convergence

Atlas AutoSeed allows users to suspend Atlas use for any period of time, and upon returning to their last location, the Atlas system uses AutoSeed to rapidly re-converge to a high-accuracy converged position.

Super Robust RTK Positioning

SureFix is Hemisphere’s processor that runs in combination with Athena GNSS engine to provide high-fidelity RTK quality information that results in enhanced and improved RTK accuracy, availability, and guaranteed precision with virtually 100% reliability. The SureFix processor takes several inputs and determines the quality of the RTK solution in the form of ‘quality indicators’. The indicators are then combined with RTK data and provide the user with high-fidelity information about the quality of the RTK solution.

Positioning Sustainability

Tracer technology is Hemisphere’s all-new cutting-edge position quality maintenance in the absence of correction signals. The feature allows the user to maintain accuracy from meter to sub decimeter-levels, availability, and reliability of the position during correction data outages.

Network RTK Augmentation

BaseLink technology allows Atlas-capable receivers to self-calibrate, self-survey, and automatically manage the transmission of RTK correction data to augment or extend established or new GNSS reference networks in areas of poor internet connectivity.

Exclusive Agnostic Capability

SmartLink technology allows an AtlasLink® GNSS smart antenna to be used as an Atlas signal extension for any GNSS system compliant with open communication standards.