Emlid, the creators of Reach, centimeter-accurate RTK GNSS receiver, is now taking pre-orders for its multi-band GNSS receiver Reach RS2. The new receiver features a built-in LoRa radio, a 3.5G modem, and a survey app for iOS and Android.
Photo: Emlid
L1/L2/L5 RTK GNSS receiver with centimeter precision. Reach RS2 determines a fixed solution in seconds and provides positional accuracy down to several millimeters. The receiver tracks GPS/QZSS (L1, L2), GLONASS (L1, L2), BeiDou (B1, B2), Galileo (E1, E5) and SBAS (L1C/A), and reliably works in RTK mode on distances up to 60 kilometers and 100 kilometers in PPK mode. A multi-feed antenna with multipath rejection offers robust performance even in challenging conditions.
RINEX raw data logs are compatible with OPUS, CSRS-PPP, AUSPOS and other PPP services so users can now get centimeter-precise results any place on Earth.
Built-in 3.5G modem and UHF LoRa radio. The Reach RS2 features a power-efficient 3.5G HSPA modem with 2G fallback and global coverage. The corrections can be accessed or broadcast over NTRIP independently, without relying on internet connection on a smartphone.
For remote areas, the Reach RS2 has a built-in LoRa radio that has proven to be a reliable link for RTK corrections for distances up to 8 kilometers.
Designed for Tough Conditions. The Reach RS2 is engineered to be waterproof and impact-resistant. Its body is manufactured in a two-step injection process and is made out of shockproof polycarbonate covered in a special elastomer for extra protection. The receiver has an industry-standard 5/8-inch mounting thread.
The LiFePO4 battery of the Reach RS2 is designed for 16 hours of work as a 3.5-G RTK rover on one charge regardless of weather conditions. It can charge from a USB wall charger or a power bank over USB-C.
A RS232 interface allows users to connect the Reach RS2 directly to external hardware and output position in NMEA.
Photo: Emlid
ReachView App. The Reach RS2 comes with a mobile app, ReachView for iOS and Android, that is used to control all the features of the device. Users can create projects, collect and stake-out points, and import and export geodata in industry-standard formats such as CSV, DXF and Esri Shapefile.
The Reach RS2 comes in a carrying bag with a USB-C cable and a LoRa radio antenna. The ReachView app is available for download from Play Market or App Store.
Shipping of the first batch starts in mid-June 2019.
Since 1990, the urban population of Africa has doubled, with more than 80 percent of its denizens living in urban areas. Urbanization can contribute to sustainable growth, if managed well.
However, its speed and scale bring challenges, including meeting accelerated demand for affordable housing, transport systems, infrastructure, basic services and jobs.
Population data such as shown above is only a sample of the geospatial data available in Esri’s new Africa GeoPortal (www.africageoportal.com). The Esri-led initiative is a cloud-based platform that provides and receives geographic data and imagery from Esri and its partners.
The African Union, African Development Bank, other international agencies, nongovernmental organizations, academia, businesses and national government funds will be able to use the geoportal to address the most urgent development challenges facing the continent — including economic development, climate adaptation, conservation and health care.
The complimentary software-as-a-service geoportal is offered to anyone supporting African nations for positive economic, social and environmental outcomes — African citizens, NGOs and international development agencies. The geoportal offers access to spatial analytics capabilities and authoritative content for charting compelling, educational, informational, entertaining and beautiful maps of Africa.
The Global Human Settlement Layer from the European Commission’s Joint Research Centre (JRC) is a complete, consistent, global, free and open dataset on human settlements, and helps to quantify and understand the issues that drive urbanization. The above example comes from the JRC in its Esri story map “Building Knowledge for Sustainable Development in Africa,” which shows how the JRC contributes to the African Union (AU)-European Union (EU) partnership.
Acquisition Expands Orolia’s Global Footprint into Canada.
Orolia has acquired Skydel Solutions, a GPS/GNSS signal simulation company based in Montreal, Canada.
Orolia made the announcement at the Association of the U.S. Army’s Global Force Exhibition in Huntsville, Alabama.
Orolia is a resilient positioning, navigation and timing (PNT) solutions company and a partner of U.S., NATO and allied forces. The company provides end-to-end resilient PNT solutions, including scalable, modular and cost-effective technology to support PNT-reliant and critical defense and commercial applications.
Skydel’s capabilities allows Orolia to offer customers more diverse resilient PNT solutions with sophisticated testing and simulation protocols, additional customized signals, and superior vulnerability assessments for military and commercial applications where GNSS failure is not an option.
According to Orolia, as the latest addition to the Orolia portfolio, Skydel brand solutions bring a new paradigm to the GNSS simulator scene by combining innovative algorithms and off-the-shelf hardware to help protect the world’s most critical GNSS-reliant systems operating through GPS, Galileo and other GNSS.
Skydel technology also supports secure communications signals such as SAASM, M-code, PRS and other alternative signals with approved partners to provide real-world PNT vulnerability testing for critical infrastructure applications worldwide.
“The need for continuous, reliable GNSS signals is growing exponentially worldwide, particularly for military and commercial systems that depend on accurate PNT data,” said Orolia CEO Jean-Yves Courtois. “The threats to these systems are growing too, whether it’s through signal jamming, spoofing or meaconing. With Skydel’s unique industry expertise, Orolia now offers even more rigorous, broad spectrum testing and simulation solutions to ensure continuous signals, even in GNSS-denied environments.”
By combining graphics processing unit (GPU) accelerated computing and software-defined radios (SDR), Skydel-powered simulation solutions generate signals in real time, with uncompromising performance for demanding use cases. They are available as complete turnkey systems suitable for all GNSS simulation needs, including everything from compact test benches to complete CRPA test systems.
“Since our inception in 2014, Skydel has enjoyed exponential growth,” said Stéphane Hamel, CEO of Skydel. “This strategic move with Orolia will allow us to keep our focus on disruptive innovation and accelerate our global reach.”
Above: A montage of screenshots showing the various updates, from a February 2019 story about Skydel updating its SDX GNSS simulator to version 19.1 with Galileo Alt-BOC and more. (Image: Skydel)
From left: Left to Right: Esri Director of Global Business Development Jeff Peters, Eos Sr. Marketing & Content Strategist Sarah Alban, Eos CTO Jean-Yves Lauture, Esri President Jack Dangermond. (Photo: Eos Positioning)
The award for “Energizing the Market with a Bundle” recognizes Eos’ seamless integration of its Arrow Series GNSS receivers with Esri mobile apps.
Eos Positioning Systems Inc., provider of submeter Bluetooth GPS and GNSS solutions, has received a 2019 Esri Partner Conference award in recognition of Eos’ contributions to Esri mobile applications.
Esri ArcGIS users benefit from bundling the Eos Arrow GNSS receivers and Esri mobile apps to create real-time, high-accuracy field GIS solutions on consumer devices such as iPads, tablets, and smartphones.
Photo: Eos Positioning
“As a long time Esri partner, this ‘Energizing the Market Award’ highlights the ongoing value Eos brings to our shared customers,” said Francis Kelly, Esri manager of Global Partner Programs. “Their thoughtful approach to connecting the field worker to the enterprise GIS creates customer satisfaction and significant ROI across our business sectors.”
“Eos has done tremendous work bringing affordable high-accuracy receivers to the Esri user community, whilst taking advantage of the latest Esri technology including Collector for ArcGIS and Survey123 for ArcGIS,” Esri Canada Director of Strategic Alliances Paul Salah said. “I couldn’t be more pleased to have them recognized for their innovation that brings such great value to field workers everywhere.”
Eos’ mission is to turn the complex world of high-accuracy submeter and RTK location into simple and affordable integrations to the Esri ArcGIS platform. This is achieved with behind-the-scenes transfers of high-level GNSS information with Esri mobile apps.
The exchange is nearly transparent to the end-user, and therefore minimizes the knowledge required for anyone to capture survey-grade 3D locations.
“It used to be really hard to collect high-accuracy data,” said Christa Campbell, Esri Global Water Practice Industry Specialist. “But now it’s very easy and affordable, so there are no limits any more. Anyone can do it.”
2018 saw small-system water utilities, municipalities, consultancies, co-ops and others adopt high-accuracy GIS at increasing rates. Eos believes this is due to a changing understanding of how easy and affordable high-accuracy data collection can be with the Eos/Esri bundle.
“We are showing that anyone can map an entire system, regardless of the size or the person’s familiarity with GNSS and GIS,” Eos CTO Jean-Yves Lauture said. “We are showing that it is simple, affordable, and profitable.”
The adoption of high-accuracy solutions among GIS users coincides with a general shift toward digitized asset management, away from paper maps and CAD drawings.
The shift is the natural result of more affordable and easier to use technologies, the proliferation of smart devices, and industry trends including increased regulations.
“Now more than ever, customers want to start taking advantage of the tremendous flexibility GIS has to offer,” Lauture said. “And the first step in creating an accurate system of record is field mapping with GPS.”
In 2018, Eos released two new innovative solutions for ArcGIS users.
The first was the result of a three-way partnership between Eos, Esri and Laser Technology, Inc.
Known as the “World’s First Laser Offset for Collector for ArcGIS,” this laser mapping solution allows field workers to collect highly accurate (submeter or centimeter) locations on their iPads and iPhones in otherwise challenging environments.
This includes GNSS-impaired environments, where view of the sky is obscured or limited, and places where occupying an asset would be unsafe or expensive (such as a manhole located in a road intersection).
“With the new collector-based laser mapping solution, organizations can save money, minimize risk and boost the efficiency of their field operations,” Esri Field Apps Product Lead Jeff Shaner said. “Without having to occupy assets in challenging environments, field workers can capture asset locations within inches of accuracy using the Eos Arrow and LTI rangefinder. This unique partnership provides advanced field data collection capabilities and drives new opportunities to extend the reach of ArcGIS.”
The second solution feeds real-time orthometric heights (Z values) directly into Collector and Survey123 for ArcGIS. By supporting real-time GEOID models, Eos eliminates the need to transform ellipsoidal heights into local vertical datum manually back at the office. This reduces time-consuming post-processing as well as makes accurate elevations instantly available for use in the field.
Eos is dedicated toward providing its customers with innovative solutions like this, which allow Esri users to stay within their existing ArcGIS mobile environments.
“This award acknowledges the work Eos has accomplished so far in bringing innovative solutions to our mutual customers with Esri,” Lauture said. “It is quite an honor for everyone at Eos, and we are especially thankful to all the Esri employees who have made the journey in getting here so enjoyable. It’s what makes us look forward to doing more in the future.”
DARPA has issued a Request for Information (RFI) to augment its understanding of state-of-the-art technologies for 3D mapping and surveying. (Photo: DARPA)
Request for Information pursues state-of-the-art technologies for collecting and characterizing 3D mapping and surveying data.
DARPA is seeking information on state-of-the-art technologies and methodologies for advanced mapping and surveying in support of the agency’s Subterranean (SubT) Challenge.
Georeferenced data — geographic coordinates tied to a map or image — could significantly improve the speed and accuracy of warfighters in time-sensitive active combat operations and disaster-related missions in the subterranean domain. Today, the majority of the underground environments are uncharted or inadequately mapped, including human-made tunnels, underground infrastructure, and natural cave networks.
Through the Request for Information, DARPA is looking for innovative technologies to collect highly accurate and reproducible ground-truth data for subterranean environments, which would potentially disrupt and positively leverage the subterranean domain without prohibitive cost and with less risk to human lives. These innovative technologies will allow for exploring and exploiting these dark and dirty environments that are too dangerous to deploy humans.
“What makes subterranean areas challenging for precision mapping and surveying — such as lack of GPS, constrained passages, dark or dust-filled air — is similar to what inhibits safe and speedy underground operations for our warfighters,” said Timothy Chung, program manager in DARPA’s Tactical Technology Office (TTO). “Building an accurate three-dimensional picture is a key enabler to rapidly and remotely exploring and searching subterranean spaces.”
DARPA is looking for commercial products, software, and services available to enable high-fidelity, 3D mapping and surveying of underground environments. Of interest are available technologies that offer high accuracy and high resolution, with the ability to provide precise and reproducible survey points without reliance on substantial infrastructure (such as access to global fixes underground).
Additionally, relevant software should also allow for generated data products to be easily manipulated, annotated, and rendered into 3D mesh objects for importing into simulation and game engine environments.
DARPA may select proposers to demonstrate their technologies or methods to determine feasibility of capabilities for potential use in the SubT Challenge in generating and sharing 3D datasets of underground environments.
Such accurately georeferenced data may aid in scoring the SubT competitors’ performance in identifying and reporting the location of artifacts placed within the course. In addition, renderings from these data may provide DARPA with additional visualization assets to showcase competition activities in real-time and post-production.
Furuno Electric Co. Ltd., based in Nishinomiya, Japan, has developed the GT-88 timing module and GF-8801/02/03/04/05 disciplined oscillator for users who require UTC time-synchronized signals to meet the new 5G requirements.
They provide UTC time-synchronized timing signals (1 PPS/10 MHz) by receiving GNSS satellite signals. Achieved stability is better than that of an atomic clock, including a rubidium.
Photo: Furuno
The GT/GF-88 series includes a brand-new algorithm, named Dynamic Satellite Selection, that provides outstanding multipath mitigation, especially in urban canyon environments, the company said. The algorithm was developed by Nippon Telegraph and Telephone Corporation (NTT) based in Tokyo, Japan.
Extremely high stability of 4.5 ns (1 sigma) is obtained, only requiring reception of the L1 band (1575.42 MHz) frequency GNSS satellites. It was achieved by improving advanced position estimation algorithms and optimizing position calculation among several different GNSS satellite constellations. It allows users to achieve 5G-required performance without any changes to existing single-band GNSS antennas.
It incorporates the Dynamic Satellite Selection, an advanced multipath mitigation algorithm developed by NTT. Normally typical time synchronization performance deteriorates in urban canyon environments by the effect of multipath. The Dynamic Satellite Selection reduces this time error by one-fifth. This provides more flexibility when installing GNSS antennas. Consequently, the GT/GF-88 series now permits GNSS antennas to be mounted on walls, windows of tall buildings and other difficult reception environments.
The GT/GF-88 series continues to support GPS, GLONASS and QZSS satellite constellations, and now adds Galileo support. As the total number of satellites available increases, operational stability also increases.
A self-driving tractor using the BeiDou Navigation Satellite System (BDS) was tested successfully March 10 in northwestern Tunisia, according to China.org.cn.
The representatives of China-Arab BDS/GNSS center and the Arab Information and Communication Technologies Organization (AICTO), as well as the academic staff of an engineering school in Mjez El-Beb region in northwestern Tunisia, attended the test ceremony.
The smart tractor, used in various agricultural activities, was equipped with a BDS receiver so that it could be controlled remotely without a driver.
“I am very impressed and surprised by the quality of the equipment offered by BeiDou,” said Sami Trimech, the strategic planning and development director at AICTO.
“We had a dream to bring BeiDou to the Arab countries,” said Nour Laabidi, the project manager at AICTO and head of China-Arab BDS/GNSS center in Tunisia.
“This is a pilot project. We are happy to implement it in our country and I hope that all Arab countries will be able to use this Chinese technology,” Laabidi said.
Hassan Kherroubi, a specialist in the mechanical industry at the Mjez El-Beb engineering school, stressed the contribution of this Chinese technology to the agricultural sector in Tunisia.
Agricultural activities, including harvest, will be more profitable and more effective with such technologies, according to Kherroubi.
“Our main concern is to benefit all Arab and African countries of this fruitful cooperation between Tunisia and China,” Kherroubi said, adding that this advanced technology will bring a bright future to the region.
BDS is compatible with other navigation systems, such as GPS, and users can receive services from both systems at the same time, improving positioning accuracy.
Few commercial UAV operations would be able to inspect transmissions lines, pipelines or train tracks without beyond visual line-of-sight (BVLOS) capability, but these key pieces of infrastructure often situate close to or transit across population centers. Further, many population centers have airports and low-level air traffic. Any tools to keep drones away from air traffic during BVLOS operations will significantly inspection companies. We review three promising solutions here.
Pipeline Inspection
Kongsberg Geospatial in Ottawa, Canada has developed location visualization software tools that are used for air-traffic control, command and control, and air defense applications. The company has several decades of experience in these applications. Its IRIS software was used to support recent UAV oil pipeline inspection operations in Nigeria, providing safety critical airspace deconfliction, supervised by the Nigerian Civil Aviation Authority (NCAA).
The pipeline project was undertaken by Aerial Robotix, a UAS services provider in Nigeria, who used adapted Kongsberg software in its control center to demonstrate safe BVLOS operations, and was then able to obtain the necessary permits. A Schiebel Camcopter S-100 UAV with a 200-kilometer BVLOS capability was used for flight inspection, operating both day and night, with real time high-definition payload imagery sent back to the control station.
Camcopter S-100 prior to BVLOS pipeline inspection flight in Nigeria. (Photo: Schiebel)
Nigeria has a major problem with gasoline theft from pipelines similar to those lines inspected during this project. Recently, 105 people perished in a blast from a ruptured pipe 30 miles north of the city of Umuahia, possibly during scavenging for leaking fuel. It has been claimed that the pipeline had been ruptured by saboteurs earlier, and for the following six weeks villagers had been collecting fuel. Pipeline vandalism is common in Nigeria, even given the risk of fire or explosion, or the risk of prosecution, or even the possibility of being shot on sight.
Unmanned Companion Fighter Aircraft
Boeing just unveiled a concept UAV which is apparently aimed at providing an airborne team-partner for manned aircraft.The concept was introduced at the Australian International Airshow by the Australian Minister for Defense, the Hon. Christopher Pyne MP. The project is slated for a significant R&D investment by the Australian Government and Boeing Australia.
Boeing Airpower Teaming System. (Photo: Boeing Company)Boeing Airpower Teaming System. (Photo: Boeing Company)
The concept model has fighter aircraft lines with a projected 2,000-mile range, autonomous capability, and significant intelligence, surveillance and reconnaissance sensor capability. Flying alongside manned fighter/attack aircraft with artificial intelligence simplifying control, the Airpower Teaming System is designed as a low-cost force multiplier.
The concept includes a pitch for international collaboration offering significant customization so countries can add local content, a key element for any aircraft program designed for off-shore sales.
XQ-58A demonstrator in flight. (Photo: U.S. Air Force)
A day or so after the Airshow (maybe not wanting to be upstaged by Boeing’s announcement?) a release showed up about the first flight of the previously secret XQ-58A Valkyrie demonstrator. This is apparently a program by the US Air Force Research Laboratory (AFRL) partnered with Kratos Unmanned Aerial Systems to develop a UAS which looks to have very similar capabilities to that of the Boeing concept, perhaps at a significantly further advanced stage, with a much more mil-spec UAV sounding name.
The AFRL indicated that the XQ-58A is part of a Low Cost Attritable Aircraft Technology (LCAAT) (guess that means they don’t much mind losing a few) effort to come up with low-cost force multipliers which can be built quickly using commercial technology and operating from unprepared runways.
(From the Air Force: “The thought is to develop an inexpensive, configurable and producible on demand air vehicle. A number of military applications can be envisioned for an air vehicle with such a capability. One potential application is to use hundreds or thousands of such units in a campaign to overwhelm an enemy’s air defenses and “punch a hole” to enable higher value, less replaceable [aircraft] to engage or monitor enemy systems. Another potential application is to augment the capabilities of high-value intelligence, surveillance and reconnaissance, systems which may be limited in a specific campaign by distances, quantities, or threats. For all applications, the weapon system is expected to be an air vehicle that would return to base or to a separate location to be recovered. However, because of the mission and because of the low cost, the air vehicle would be attritable, meaning the Air Force would expect and could afford to lose many of the assets.”)
The current program took 2½ years to get to this flying prototype, which still seems pretty lengthy in terms of today’s commercial UAVs. The first flight from Yuma Proving Grounds in Arizona lasted an hour and a quarter and all went as expected. Five test flights are planned to check out functionality, aerodynamics, and launch and recovery systems. Kratos is perhaps better known for its family of target drones which have been in use by the US and internationally for some time.
Kratos BQM-177 Navy drone declared operational. (Photo: Naval Air Systems Command)
Kratos Defense & Security Solutions, Inc. announced in early March that its BQM-177A Subsonic Aerial Target (SSAT) has achieved Initial Operational Capability as reported by the US Navy. A Navy statement said “The first site the BQM-177A will be operated from is Pt Mugu, California. The target is capable of speeds in excess of 0.9 Mach and a sea-skimming altitude as low as 10 feet which provides sea-skimming anti-ship cruise missile threat emulation for the US Navy.”
Parachute System for DJI Phantom 4
Recent testing of the descent rate of a Phantom 4 equipped with a SafeAir parachute system indicated that this UAV/parachute combination may well meet the FAA’s recently published draft rules for flight over people. The parachute system uses on-board indicators to trigger parachute deployment. ParaZero (manufacturer of the SafeAir UAV parachute system) has developed standards, and promises to provide customers with certification data to support waiver applications for flight over people.
Wrap-up
So now we have intuitive software using terrain data and sensor inputs which can provide a visual overlay to supports BVLOS flights, concepts designs and prototypes to support the ‘Loyal Wingman’ approach – flying UAVs alongside existing defense aircraft as force multipliers – and advances towards UAV flight over people using certified parachute safety systems. Just a flavor of the flurry of recent new developments in the world of unmanned aircraft.
Norway has electronic proof that Russian forces disrupted GPS signals during recent NATO war games, according to a report in Reuters news service.
The Scandinavian country and North Atlantic Treaty Organization (NATO) member has demanded an explanation from its neighbor. “We recognize Russia’s right to exercise and train its capacities [but] it is not acceptable that this kind of activity affects security in Norwegian air space,” stated the Norwegian defense ministry.
Finland and Norway published claims in November that Russia may have intentionally disrupted GPS signals before and during NATO military exercises. The radio-frequency interference also affected the navigation of civilian air traffic in the Arctic. Both countries protested to Russia, which dismissed the allegations.
“We gave them the proof,” Norwegian Defence Minister Frank Bakke-Jensen stated publicly. Russia demurred, with Foreign Minister Sergey Lavrov terming the Norwegian allegations “a fantasy,” and said it would conducts its own investigation. “To be a neighbor of Russia you need to be patient,” added Bakke-Jensen.
Could Russia have targeted Norway intentionally? The minister replied: “They were exercising very close to the border and they knew this will affect areas on the other side.”
November saw NATO’s largest exercise in decades, involving forces from 31 countries in an area stretching from the Baltic Sea to Iceland.
Above: Krasukha jammer mounted on a heavy-duty truck, part of the radio electronic warfare unit (EW) of the Western Military District. (Photo: Ministry of Defense of the Russian Federation)
A series of documentary videos on automation and technology in the construction and agriculture industries covers drone inspection of infrastructure among other new trends. Filmed in the U.S., the Netherlands, United Kingdom, and Germany, the series of brief films produced by Topcon Positioning Group emphasizes how technological advancements have changed infrastructure — how it is designed, built and maintained — and what to expect going forward.
“The infrastructure industry is changing quickly, and this video series highlights how this advancement is part of a larger story of technology changing the paradigm everywhere. To stay on top, businesses will need to adopt automation and new technology,” according to Topcon spokesperson Jackie Ferreira.
A spokesperson from Intel describes how drone inspection facilitated data gathering and project planning for a complex restoration project on the Great Wall of China, in an area with very difficult access.
NovAtel’s Waypoint Products Group has released version 8.80 of its GNSS and GNSS+INS post-processing software products, including Inertial Explorer, Inertial Explorer Xpress, GrafNav and GrafNet. All Waypoint customers with an active subscription that are within the support period qualify for the Waypoint 8.80 upgrade at no additional charge.
Key features of the 8.80 release include:
High-rate precise satellite orbit and clock corrections available in minutes with the TerraStar-NRT option
Increased accuracy for pedestrian and vehicle applications by applying vehicle constraints using our SPAN intelligent vehicle dynamics modelling
Ability to use L5, E5a, B3 in differential solutions
14 percent faster processing with 64-bit support
For applications requiring highly accurate post-mission position, velocity or attitude, post-processing maximizes the accuracy of the solution by processing previously stored GNSS and inertial measurement unit (IMU) data forward and reverse in time, and combining the results. The position, velocity and attitude solution can be smoothed and output at the required data rate and in the coordinate frame required. This process also provides the ability to assess the solution reliability and accuracy.
The GrafNav and Inertial Explorer software packages are available as a digitally secured machine-portable license. The products are also available as a perpetual license or as a time-limited term license. A Software Development Kit (SDK) is available to allow developers to customize the entire processing workflow to suit their customers or application.
The Waypoint process:
Step 1: Capture raw GNSS and IMU data.
Step 2: Waypoint post-processing software maximizes the accuracy of the solution by independently processing data forward and reverse in time and combining the results.
Step 3: The position, velocity and attitude solution is smoothed to deliver an unparalleled level of accuracy. In-depth quality analysis tools verify the quality of the trajectory.
Step 4: Export your results at the required data rate and in the coordinate frame required.
The Horizon fiberoptic gyro (FOG) inertial measurement unit (IMU) now forms part of SBG Systems’ Navsight Marine Solution, dedicated to hydrographers. Navsight is available at different levels of accuracy to meet the various application requirements and can be connected to various external equipment such as echo-sounders, lidar, and so on.
Photo: SBG Systems
Navsight Marine Solution already offered two levels of performance with the Ekinox and Apogee IMUs. These MEMS-based IMUs address most of hydrographics markets whether shallow or deep water.
The new Horizon IMU enables customers to deploy Navsight in the most demanding environments such as surveying highly dense areas (bridges, buildings, and so on) as well as applications where only a single antenna can be used.
The Horizon IMU is based on a closed-loop FOG technology which enables ultra-low bias and noise levels. This technology allows robust and consistent performance even in low dynamics survey.
Navsight solution is easy to install, as the sensor alignment and lever arms are automatically estimated and validated. Once connected to the Navsight processing unit, the web interface guides the user to configure the solution. A 3D view of the vessel shows the entered parameters so that the user can check the installation. The Navsight unit also integrates light emitting diode (LED) indicators for satellite availability, RTK corrections, and power. It comes with a rugged enclosure, or in a rack version for larger vessels.
Completing the Navsight offer, Qinertia, SBG’s post-processing software, gives access to offline RTK corrections from more than 7,000 base stations located in 164 countries. Trajectory and orientation are then greatly improved by processing inertial data and raw GNSS observables in forward and backward directions. Computation takes less than 3 minutes for a 6-hour log thanks to the Forward and Backward calculation processed at the same time.
