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List of Base Station Functions
List of Base Station Functions In the world of geospatial technology, precise data transmission and reliable connectivity are critical for professionals working in GNSS, RTK, precision agriculture, and drone industries. Geolocation specialists, drone manufacturers, and experts in RTKGNSS systems understand the need for devices that not only streamline operations but also enhance data collection and processing. In this blog post, we explore the essential features of a versatile GNSS device that meets these needs. Whether you're looking to optimize connectivity, enhance accuracy, or gain more control over your data, this device comes packed with a range of functionalities that can be tailored to your specific use case. Two NTRIP v1 Servers. The device is equipped with two NTRIP v1 servers, which can also function as TCP clients. This feature allows seamless integration and data exchange between multiple devices, boosting connectivity flexibility. Documentation with Many Screenshots for Beginners. Tailored specifically for newcomers, the device comes with detailed documentation that includes many screenshots, ensuring a smooth setup process and easy understanding for those unfamiliar with GNSS technology. NTRIP v1 Caster Supporting Hundreds of Clients. The device supports an NTRIP v1 caster that can connect hundreds of clients, enabling direct communication between rovers and the base station. This is ideal for large-scale GNSS networks. TCP Server. A built-in TCP server allows the device to serve as a data hub, making it easier to collect and distribute GNSS data across various systems in real-time. Data Output to Connected USBCOM. The device allows seamless data output to a connected USBCOM, ensuring that the data collected from the GNSS receiver can be processed and analyzed efficiently. Measurement Logging in RTCM3 and RINEX Formats. For precise data recording, the device supports RTCM3 and RINEX formats, widely recognized in the GNSS industry, for logging measurement data. Choice of Modern Multi-System, Multi-Frequency Receivers. Choose from three advanced GNSS receivers (Unicore, Bynav, and Septentrio) offering multi-system, multi-frequency capabilities. If specialized configuration and detection aren't necessary, any receiver that outputs RTCM3 data can also be used. Built-in Splitter for Triple Mining with Geodnet. The device features an integrated splitter for triple mining with Geodnet, which enhances data collection efficiency and reliability. Built-in PPP with Coordinate Display. The device includes a built-in Precise Point Positioning (PPP) system that shows coordinates on a detailed world map, helping to assess the quality of your data in real-time. Internet-Based Version Updates. Keep your system up to date easily with internet-based version updates via a simple button in the web interface. This feature ensures you stay on the cutting edge of GNSS technology. Wired Ethernet and Wi-Fi Support. The device supports both wired Ethernet and WiFi, giving you flexible options for data transmission and connectivity in various environments. PoE or USB Power. Choose between Power over Ethernet (PoE) or USB power options, depending on your setup and power requirements. Dynamic (DHCP) and Static IP Options. The device supports both dynamic (DHCP) and static IP configurations, providing flexibility in network setups. Use as a Raspberry Pi for Other Purposes. The device can function as a Raspberry Pi, giving you the ability to use it for other applications, such as ADS-B mining or other custom purposes. Antenna Coordinate Configuration. Antenna coordinates can be configured directly through the web interface, allowing for easy setup and optimization. Four Methods for Determining Base Coordinates. The device provides four different methods for determining the base station’s coordinates, ensuring maximum flexibility for various operational scenarios. Antenna Type Configuration. The device also allows users to configure antenna types directly via the web interface, ensuring optimal data collection based on the equipment used. RTCM3 Packet Type Selection. You can select specific RTCM3 packet types for transmission, allowing for precise data formatting and compatibility with other GNSS devices. Built-in VPN for Remote Management. A built-in VPN (TailScale) allows for remote management of the device, enabling you to control your base station even while traveling, ensuring full operational control at all times. Rover Mode. The device can operate as a rover, offering flexibility for various surveying and mapping tasks. Currently, rover mode is supported only on Windows. Internet Connection Status Indicator. The device features a status indicator to display real-time internet connectivity, giving you clear visibility of the device's online status. Temperature Monitoring. Monitor the device's temperature to ensure it’s operating within safe limits, helping to prolong the life of the system. Disk Space Monitoring. Stay informed about available storage with built-in disk space monitoring, ensuring that you never run out of storage space unexpectedly. Four Mounting Options. The device supports four different mounting options, providing flexibility in installation for various setups. DIY Mode with Raspberry Pi. For those with a more technical background, the device offers a DIY mode where you can use your own Raspberry Pi, along with a USB or HAT receiver and antenna, to customize your setup. Open-Source Functionality. The device’s functionality is user-modifiable with open-source code available on GitHub, allowing for deep customization and integration with other systems. NTRIP Server Interface with Connection Interruption Indicators. The NTRIP server interface offers detailed connection interruption reasons, providing transparency for troubleshooting and ensuring smooth operation. Service Logs with Extensive Technical Information. The device keeps detailed service logs, displaying extensive technical data and connection interruption reasons, aiding in diagnostics and system optimization. Exotic Characters in SSID and Passwords. The device allows the use of exotic characters in SSID and passwords, ensuring flexibility for complex and secure network configurations. Conclusion: This versatile GNSS device offers an impressive array of features that cater to the needs of professionals in geospatial industries. From powerful NTRIP server capabilities to flexible power options and advanced configuration settings, it’s designed to streamline data collection, enhance connectivity, and provide reliability in demanding environments. Whether you’re operating in precision agriculture, RTKGNSS mining, or drone operations, this device ensures you have the tools necessary to achieve optimal results. Stay ahead of the curve with cutting-edge technology that’s designed to evolve alongside your business needs. © Eltehs SIA 2025
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Galileo High Accuracy Service: Benefits of Galileo for Precise Positioning
Galileo High Accuracy Service (HAS): Benefits for Users and Businesses Galileo is Europe's Global Navigation Satellite System (GNSS), providing a new and reliable alternative for users who were previously dependent on the American GPS or Russian GLONASS systems. Galileo provides high-precision positioning and timing information, and it is under civil control, which is a significant advantage compared to other systems. Why is Galileo important? GNSS systems, including Galileo, have become indispensable tools for many sectors and daily activities. We often take GNSS for granted, but if these signals were suddenly turned off, it would cause disruptions in emergency services, transportation systems, financial transactions, communication, and more. Galileo helps minimize such risks and ensures higher reliability. Benefits of Galileo High Accuracy Service: Higher Positioning Accuracy: Galileo improves location accuracy through multi-constellation receivers and dual-frequency capability, offering enhanced precision and resistance to interference. Resistance to Interference: Galileo’s dual-frequency capability significantly improves resistance to jamming and enhances positioning accuracy in difficult environments. Everyday Use: Products like in-car GPS systems and mobile phones benefit from the increased accuracy that Galileo offers. Support for Emergency Services: Galileo is critical for emergency response services, such as fire departments, police, and medical teams, providing them with fast and precise location data in critical situations. Safety and Efficiency on European Roads and Railways: Galileo helps make Europe’s transport systems safer and more efficient. Innovation and Market Growth: Galileo drives European innovation by enabling the creation of new products and services, boosting the economy, and creating jobs. The market for added-value services in this sector is forecast to reach EUR 166 billion by 2029. Geographic Coverage and Limitations Galileo High Accuracy Service is available globally, excluding certain regions defined by the following coordinates: Latitudes: 60ºS to 60ºN Longitudes: 90ºE to 180ºE and 125ºW to 180ºW Users in the excluded regions can still use Galileo HAS corrections, but the Minimum Performance Levels (MPLs) apply only within the service area. . . DETAILS ON COMMITTED ACCURACY Figure of merit MPL target Conditions and constraints HAS orbit corrections ≤ 20 cm (95%) for Galileo≤ 33 cm (95%) for GPS over the instantaneous constellation average (computed as RMS) - Calculated over a period of 30 days - All HAS-corrected and valid Galileo/GPS satellites in view from any point in the Service area HAS clock corrections accuracy ≤ 12 cm (95%) for Galileo≤ 15 cm (95%) for GPS over the instantaneous constellation average (computed as the RMS) HAS code biases accuracy ≤ 50 cm (95%) for both Galileo and GPS over the instantaneous constellation average (computed as RMS) DETAILS ON COMMITTED AVAILABILITY Figure of merit MPL target Conditions and constraints HAS corrections availability ≥ 87% Galileo only - 5 degrees elevation mask- Calculated over a period of 30 days- At least 5 HAS-corrected and valid satellites in view- At the Worst User Location (WUL) of the Service area ≥ 95% Galileo + GPS - 5 degrees elevation mask- Calculated over a period of 30 days- At least 8 HAS-corrected and valid satellites in view- At the WUL of the Service area DETAILS ON TYPICAL PERFORMANCE – POSITIONING ACCURACY (GALILEO ONLY) Figure of merit Typical performance Conditions and constraints HAS horizontal positioning accuracy ≤ 25 cm Galileo only - 68th percentile confidence level- Over any 24 hours period- For the signal combinations supported by the HAS- Using the HAS performance characterisation user algorithm (HAS-UA)- At least 5 HAS-corrected and valid satellites in view above 5 degrees elevation under open sky conditions- Static user- Applying orbit and clock corrections and code biases for the involved signals- At the Average User Location (AUL) of the Service area- Usage assumptions as per HAS-SDD HAS vertical positioning accuracy ≤ 30 cm Galileo only DETAILS ON TYPICAL PERFORMANCE – POSITIONING ACCURACY (GALILEO + GPS) Figure of merit Typical performance Conditions and constraints HAS horizontal positioning accuracy ≤ 15 cm Galileo + GPS - 68th percentile confidence level - Over any 24 hours period - For the signal combinations supported by the HAS - Using the HAS performance characterisation user algorithm (HAS-UA) - At least 8 satellites in view above 5 degrees elevation for Galileo + GPS users under open sky conditions - Static user - Applying orbit and clock corrections and code biases for the involved signals - At the Average User Location (AUL) of the Service area - Usage assumptions as per HAS-SDD HAS vertical positioning accuracy ≤ 20 cm Galileo + GPS DETAILS ON TYPICAL PERFORMANCE – POSITIONING AVAILABILITY Figure of merit Typical performance Conditions and constraints HAS positioning availability ≥ 90 % - Fulfilling both horizontal and vertical positioning accuracy targets as per HAS-SDD- Calculated over a period of 30 days- For the signal combinations supported by HAS- Using the HAS performance characterisation user algorithm (HAS-UA)- Under open sky conditions- At least 5 HAS-corrected and valid satellites in view above 5 degrees elevation for Galileo-only users- At least 8 HAS-corrected and valid satellites in view above 5 degrees elevation for Galileo + GPS users- Static user- Applying orbit and clock corrections and code biases for the involved signals- At the Average User Location (AUL) of the Service area- Usage assumptions as per HAS-SDD PERFORMANCE TARGETS (HAS provides corrections for…) Galileo E1, E5a, E5b, E6 GPS L1 C/A, L2C . . WHAT ARE WE LOOKING AT IN TERMS OF PERFORMANCE? . . ACCURACY – ORBIT CORRECTIONS . . ACCURACY – CLOCK CORRECTIONS . . ACCURACY – CODE BIAS CORRECTIONS . . AVAILABILITY – HAS CORRECTIONS . . AVAILABILITY – MONITORING STATION NETWORK . AVAILABILITY – VOLUME ANALYSIS (SIS) . . AVAILABILITY – VOLUME ANALYSIS (IDD) . . HAS RESULTS VS. USER PERFORMANCE METRICS HAS user terminal at EUSPA Headquarter – 68%, 24 hours (sliding window) – Galileo E1/E5a + GPS L1/L2C © Eltehs SIA 2025
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Galileo High Accuracy Service (HAS) for GNSS Positioning
What is the Galileo High Accuracy Service (HAS)? The Galileo High Accuracy Service (HAS) is a groundbreaking service that has transformed the approach to precise positioning since its launch on January 24, 2023. It provides free Precise Point Positioning (PPP) corrections through the Galileo E6-B signal and alternative internet communication channels. With this service, users can determine their position with an accuracy of up to decimetres, unlocking new possibilities for a wide range of applications and technologies. The main characteristics of the Galileo HAS are: HAS corrections: high accuracy corrections are composed by orbits, clocks, and signal biases per each satellite. The HAS full service will include atmospheric corrections too. Accessible: high accuracy corrections are accessible through two dissemination channels: E6-B Signal in Space (SiS) and a terrestrial link, which provides an alternate source to the SiS through the Internet. Multi-constellation and multi-frequency: high accuracy corrections are computed for Galileo E1/E5a/E5b/E6; E5 AltBOC and GPS L1; and L2C. Open format: high accuracy corrections follow a similar format to Compact-State Space Representation (CSSR). Galileo HAS Service Levels Two service levels are defined for the provision of high accuracy PPP corrections: Service Level 1 (SL1): with a global coverage availability, provides high accuracy corrections (orbits, clocks) and biases (code and phase) for Galileo E1/E5b/E5a/E6 and E5AltBOC and GPS L1/L5/L2C signals. Service Level 2 (SL2): with a regional coverage availability, over the European Coverage Area (ECA), provides SL1 corrections plus atmospheric (at least ionospheric) corrections and potential additional biases. The target performances for both SL1 and SL2, at full service capabilities, are presented in the table below: Applications of Galileo HAS in Various Industries The Galileo HAS service provides substantial benefits to industries that rely on high-precision GNSS solutions, including: Agriculture: Enhanced guidance and steering for farming equipment to improve efficiency and reduce operational costs. Construction: Improved precision for machine control applications on construction sites. Autonomous Vehicles: Increased precision for robotics and self-driving technology. Surveying: More accurate geospatial data for surveying and mapping. Galileo HAS target markets Overview of the most relevant applications that can benefit from Galileo HAS. AGRICULTURE Guidance VRA-Low applications Farm machinery positioning Site-specific data analysis applications RAIL Cold Movement Detection Odometer Calibration Door Control Supervision Infrastructure surveying Gauging surveys Structural monitoring GEOMATICS Gis/Mapping Cadastre in rural areas (Land consolidation) Hydrographic survey Offshore exploration CONSUMER SOLUTIONS LBS Gaming Health AR for leisure Geo marketing and advertising AR Professional Robotics- High GNSS use ROAD Autonomous driving Safety-critical applications AVIATION/DRONES Drones: Positioning System (Urban) Drones: Navigation System (Urban) Drones: Geo-awareness System Airport - integrated surface management systems MARITIME Port operations Port bathymetry Riverbed survey Coastal Seabed survey Offshore supply vessels with dynamic positioning Autonomous Surface Vessels SPACE Precise Orbit Determination Attitude Determination Civilian Launchers Galileo HAS high-level architecture The generation, provision and exploitation of high accuracy corrections involve several Galileo system elements: The High Accuracy Data Generator (HADG) module receives data from the Galileo Sensor Stations (GSS) and generates corrections for Galileo and GPS. The High Accuracy (HA) corrections are relayed in real time to the Galileo core infrastructure. The Galileo core infrastructure receives the HA data and compiles the information in one single message of 448 bits per second and per connected satellite. The Galileo core infrastructure, through the Uplink Stations (ULS), uploads the HA data to the satellites. Galileo satellites broadcast HA data through the Galileo E6-B signal component. HA data is also provided through the terrestrial link, accessible to the users through the Internet. User receivers implement PPP algorithms to apply HA corrections to the Open Service navigation data received via E1-B signal. High accuracy service in general HAS Performance Potential Service Level 1 (SL1) Target, 2023: 10 cm RMS (H) 20 cm RMS (V) 300 seconds resolve 99% availability Global coverage HAS Performance Potential Service Level 2 (SL2) Target, Future: Improve to 100 sec. within Europe ⚓ Concerns for use in the machine control market 0.5 to 2.0 cm RMS (V) Obstructed sky 5 sec resolve time Some applications: 10-30 cm Horizontal No vertical requirement Open sky HOW ARE HIGH ACCURACY SERVICE (HAS) CORRECTIONS DIFFERENT THAN OTHER SATELLITE-BASED CORRECTIONS SBAS, typical PPP: Use 1-3 geostationary satellites Environmental blockages occur HAS corrections: Transmit on MANY satellites Improves reception likelihood GNSS.STORE support HIGH ACCURACY SERVICE GNSS.STORE platforms include E6BC signal capability Beta released in February 2023 Full release in July 2023 with firmware version 6.1.1 CORRECTION STRUCTURE Identical correction fragments Received from several satellites simultaneously One fragment "wins", others are "redundant" HIGH ACCURACY SERVICE (HAS) MACHINE CONTROL APPLICATIONS Constraints and limits: Only horizontal positioning Open sky conditions Opportunities: Asphalt compaction Soil compaction Landfill compaction Any application where monitoring and logging position within HAS threshold is sufficient ASPHALT COMPACTION “It´s all about data and their position on the maps….” Pass count Temperature Compaction data (vibration) Improved up time in urban canyons and difficult environment Go Green – Reduced CO2 emissions by less passes GALILEO HAS HELPING PEOPLE IN AGRICULTURE The biggest portion of agriculture applications requires no vertical position accuracy but only 30 cm pass to pass accuracy in horizontal x and y. Good examples for these applications would be spraying with section control included and grass cutting guidance only to name two. The required multi Frequency activation on receivers as an addition even improves performance. Investment for the farmer is similar to Hemisphere´s Atlas Basic lifetime PPP activation, but would drastically increase numbers of tracked satellites and therefore uptime and reliability of signal of the receiver used in the guidance or steering application. Spraying with section control Investment for farmer identical to Atlas Basic PPP Service Increased satellite count Less taxing on navigation computer Reduced risk for blockages Improved performance in difficult environment HAS ADVANTAGES IN CONSTRUCTION andamp; AGRICULTURE Global availability Simplicity No radio licensing and local frequency requirements No radio / cellular / WiFi coverage issues Reduced cabling, simple installation Fewer points of failure and less blockages THE FUTURE…? Challenges and opportunities for Robot and Autonomous Driving for NRMM New Machinery Directive in 2027 Setup with PL D or SIL 2 Cyber security More autonomous operations will replace traditional working based on reduced availability of skilled workers © Eltehs SIA 2025
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