CHCNAV | Make your work more efficient

The BIG5 Saudi 2021

The BIG5 Saudi is re-scheduled for May 24th- 27th 2021 when we can ensure we continue to deliver globally trusted events in safe and conducive operating conditions. CHC Navigation and its partner SV EST will still participate in the Big 5 Saudi exhibition when it is ready in Riyadh, Saudi Arabia.

2021-03-07

2021-05-24 2021-05-27 Riyadh, Saudi Arabia The BIG5 Saudi 2021

OCEANOLOGY INTERNATIONAL 2020

OCEANOLOGY CONNECT will start on 1 to 4 December, which is an online exhibition due to the COVID-19. With 50 years of expertise, Oceanology International is the world’s largest ocean technology exhibition and conference. With over 8,000 attendees targeted for 2020, it is a must-attend event for those involved in exploring, monitoring, developing or protecting the world’s oceans, from seabed to surface and beyond. Attracting visitors from a variety of industries, including oil & gas, marine renewables and maritime defence, Oceanology International gives the opportunity for buyers and suppliers to do business in one location. Oceanology International offers structured networking opportunities to help suppliers establish relationships and secure business on a global scale.

2020-12-01

2020-12-01 2020-12-04 London, United Kingdom OCEANOLOGY INTERNATIONAL 2020

Intergeo 2020

INTERGEO is the world's largest Exhibition and Conference platform for geoinformation, which will take place from 13 to 15 October in Berlin. The exhibition area presents the latest developments in geographical information systems, surveying instruments, navigation technology, data processing, disaster response, municipal planning… Come meet us at booths C26.61 and C26.58 to learn about CHCNAV latest GNSS and Mobile Mapping technologies and applications. We look forward to seeing you there!

2020-10-13

2020-10-13 2020-10-15 Berlin, Germany Intergeo 2020

OI CONNECT 2020 December 1-4

Meet us at OI 2020 - December 1-4 Oceanology International is the world’s largest ocean technology exhibition and conference. CHCNAV will be present at the Oceanology International virtual exhibition from December 1st to 4th. We are pleased to invite you to join us for this exhibition. During this event, you will be able to get in touch with our experts to discover the most advanced geospatial technologies for marine applications. In addition, CHCNAV is expanding its distribution network for its marine survey range in different countries. Do not hesitate to contact us to discuss the possibilities of cooperation. Our Apache hydrographic drones and GNSS+INS sensors for marine and engineering operations will be on display. Other geospatial technologies and solutions for land surveying, construction and 3D mobile mapping for mass data acquisition will also be introduced. Whether you are users, integrators or distributors of advanced marine or hydrographic equipment, come and establish a partnership with us from December 1st to 4th. Schedule a one-on-one meeting with us today at https://oi.eventnetworking.com/company/1623742

2020-12-04

Intergeo Digital 2020 October 13-15

INTERGEO 2020 will take place from 13 to 15 October as a purely digital event. CHCNAV will take this opportunity and participate in this virtual event. It is an honor for the CHCNAV to invite you to this online exhibition. As an exhibitor, CHCNAV will present upcoming solutions for various industries, new products, and webinars on different topics. In addition, we will offer you our support via a digital video chat that you can join at your convenience. You can also contact us in advance for an individual appointment. Get your free ticket from here: https://www.messe-ticket.de/HINTE/INTERGEOEXPO2020/Register/IG20-CHC More information about INTERGEO Digital 2020 can be found at: https://www.intergeo.de/de/ Your presence will be a great honour and will definitely make the event more special.

2020-09-29

CHC Navigation introduces the i73 GNSS and iBase GNSS receivers

FOR IMMEDIATE RELEASE CHC Navigation introduces the i73 GNSS and iBase GNSS receivers The power of IMU-RTK GNSS technology that fits in your hands and a fully integrated GNSS base station add a new scale to GNSS surveying applications. Shanghai, China - September 9, 2020 - CHC Navigation (CHCNAV) today announced the immediate availability of the i73 GNSS, a versatile pocket-sized IMU-RTK GNSS rover with an integrated inertial module and the iBase GNSS, a rugged base GNSS receiver. The combination of the i73 GNSS and the iBase GNSS offers the most productive and affordable solution for measuring and staking out points in any surveying, mapping, or construction application. "Surveyors and construction professionals are forced to carry heavy and cumbersome GNSS receivers in most situations, resulting in unnecessary fatigue and lower productivity," said Hans Huang, product manager of CHC Navigation's Survey and Engineering Division. "Taking this into account, we have developed our pocket-sized i73 GNSS, the lightest GNSS rover powered by the latest IMU-RTK technology, and much more. Our iBase GNSS station follows the same concept of an all-in-one solution, making the need for external radio modems and other bulky accessories obsolete". The i73 Pocket IMU-RTK GNSS | A new scale to GNSS Best-in-class technology but at an affordable price. The i73 GNSS offers superior GNSS signal tracking enabling surveys beyond the usual constraints. It features full 624-channel GNSS technology and connects seamlessly to RTK GNSS networks as well as to UHF GNSS station over its embedded UHF modem. Automatic pole-tilt compensation. The i73 GNSS internal interference-free inertial module (IMU) allows automatic pole tilt compensation of up to 45 degrees. Projects are completed 30% faster and with increased efficiency and safety when measuring hard-to-reach points. Weighs less, works longer. The i73 takes GNSS to a new scale. With only 730 g and 15 hours operating time, the i73 GNSS is one of the lightest and most rugged RTK GNSS receivers on the market. Easy to carry and use, the i73 will not tire you out. The iBASE GNSS | Redefining the concept of GNSS base station The GNSS iBase is a fully integrated GNSS base station, specifically designed to meet 95% of surveyors' needs when working in UHF GNSS base and rover mode. The performance of the iBase UHF base station compared to a conventional external UHF radio modem is virtually identical. But its unique design eliminates the need for a heavy external battery, bulky cables, an external radio, and a radio antenna. Its 5-watt radio module provides operational GNSS RTK coverage up to 8 km. About CHC Navigation Founded in 2003, CHC Navigation (CHCNAV) creates innovative GNSS navigation and positioning solutions to make customers' work more efficient. CHCNAV products and solutions cover multiple industries such as geospatial, construction, agriculture and marine. With a presence across the globe, distributors in more than 100 countries and more than 1,300 employees, CHC Navigation is today recognized as one of the fastest growing companies in geomatics technologies. For more information on CHC Navigation [Huace:300627.SZ], visit: www.chcnav.com. ### Media contact: marketing@chcnav.com

2020-09-09

Techniques in Bathymetric Survey Using the Apache Unmanned Survey Vessel

Bathymetry is the study and mapping of the seabed or lakebed. It consists of obtaining measurements of the depth of the ocean or lakes and is equivalent to the mapping of the earth's topography. In general, only limited information is known about seabed and lake beds. Existing maps of the seabed are often low-resolution or obsolete. In the case of dams, the bottom is mapped during construction, and time series data are not recorded as depths will be difficult to measure. Due to the water inflow, a large amount of silt will settle in the dam, reducing the depth of the stored water. In this application, Apache series is suitable technology as it can measure depths of up to 300 m and provide its exact GNSS position. The data can be used to estimate silt deposits that scour the channel bottom, etc. The seabed level must be accurately measured to determine whether a vessel can make it to the berthing area or whether dredging is required to create adequate depth. The depth level is required in dam and reservoir areas to calculate the capacity of the dam year after year. Due to the constant movement of water through these dams, siltation causes the bed level to rise, which reduces their overall capacity. This paper explores the various features of Apache USV series for efficient seafloor level mapping. The CHCNAV hydrographic survey software is used for data recording and analysis. It provides results in the form of 3D models of the ground, contours, and depth. Figure 1: CHCNAV Apache3 River Survey The Apache series is self-contained hull vessel, made of carbon fiber macromolecular polyester. Carbon ﬁbers are widely used in the manufacture of advanced materials due to their excellent properties, such as high strength and modulus speciﬁc, low expansion coefﬁcient, and relative ﬂexibility. Autonomy is a central aspect of unmanned marine applications. The objective is to increase the range and complexity of underwater tasks that can be automated while reducing the need for operator supervision. Two of the most important issues for the implementation of unmanned vehicles on a large scale and in a tight timeframe are system reliability and manufacturing costs. Compared to the field of drones, such as UAVs or ROVs, less R&D has been carried out in the field of marine USV. However, in recent years, significant progress has been made in several aspects, such as hardware design, system development, collision avoidance, trajectory planning, platform design, collision avoidance, controllers, modeling, stability, and energy management. The Apache series features a differential GNSS to provide centimeter-accurate position data. The rover's GNSS is attached to the marine drone and the base station is installed on the ground. It is equipped with an RF communication system for data transfer to the ground station and has a live PTZ video camera. The Apache USV – Integrated hydrographic system The Apache Series The Apache series integrates unmanned navigation and topographic survey technology, providing a stand-alone, integrated, motorized, and networked hydrographic solution. The Apache USVs are portable to enable bathymetric surveying and mapping, channel surveys, underwater geological exploration, etc even in remote locations. The system reduces risks to human safety and improves the flexibility and efficiency of underwater surveillance and hydrographic surveys. The hull uses anti-corrosion sealing technology, which is suitable for different types of mission environments. It sails autonomously to complete the task according to the mission plans. Single beam and multibeam echosounders The echo sounder is a type of sonar used to determine water depth by transmitting sound pulses into the water. The time interval between the transmission and return of a pulse is recorded, which is used to determine the depth of the water as well as the speed of sound in the water at that time. Distance is measured by multiplying half the time between the outgoing pulse of the signal and its return by the speed of sound in the water [T÷2×(4700 feet per second or 1.5 km per second)]. The Apache series are equipped with a single-beam sounder to find the depth and calculate the level of the seabed. The Norbit® multibeam echosounder (MBES) for oceanographic operations is also available in the Apache 6 series, providing not only a reliable bathymetric chart, but also a backscatter resistance (BS) profile of the seabed. This information is used in various applications, such as seafloor segmentation and characterization, and inversion of geophysical parameters. GNSS RTK + Inertial positioning and navigation The Apache series integrates GNSS Real Time Kinematics (RTK) system to provide improved positioning accuracy from the nominal GNSS accuracy of several meters to about 2-3 cm. RTK uses a network of fixed ground reference stations to broadcast the difference between positions given by GNSS satellite systems and known fixed positions. Simplified mobilization – higher productivity The Apache is compact and light to facilitate transportation. A ground communication system is installed and connected to a computer for the transfer of data from the marine drone. A RTK base station is set up to allow precise positioning. The navigation plan with the survey limits are generated and is uploaded onto the Apache navigation system. Once on autopilot, the Apache USV follows the mission plan and collects data at predetermined points and transmits it to the ground station, where it is stored on a computer. This data can then be processed using the CHCNAV HydroSurvey software and 3D models of the subsurface, contours, and depth graphs are generated. In port areas, the seabed level is measured to determine where a ship can go to berth and where dredging is required. In dams, the bed level is measured to calculate the capacity of the dam. The level of the dam bed is raised during monsoon days due to siltation caused by the arrival of heavy water in the dam area. This can cause serious changes in the capacity of the dam. De-silting must be carried out whenever it exceeds an amount that would limit the operation of the dam. The Apache USV series. A versatile bathymetric solution In the following cases, the projects were uploaded to the Apache USV using a radio bridge, the data collection rate set at one point every meter and GNSS set to output NMEA at 1 Hz. Project 1: map the seabed in the existing port area with a 10 m line spacing. The echo sounder and GNSS receiver were connected to the HydroSurvey software. The data acquisition procedure is started, and the autonomous mission is defined. The Apache USV navigates to the start location and begins capturing points along the predefined course line. Once the mission is completed, it returns to its original location. The processed data is used to prepare the 3D model of the seabed and the generated contours. Figure 2 shows an example of a contour map. Figure 2: Seabed contour map Project 2: Extraction of the cross-section of the riverbed along a watercourse. The Apache was manually operated along the given cross-section to obtain the depths at every one-meter interval. Depths at different cross-sectional positions were used to generate a complete cross-section. Figure 3: Riverbed cross-section Project 3: mapping of the bed levels of a lake. The processed data are extracted and used to prepare a 3D model that will be used as a baseline reference to verify the amount of silt removed. The area will be re-mapped with the USV after completion of the lake desilting. Both layers will be used to compare and estimate the amount of silt removed. Figure 4: Riverbed cross-section Conclusion Various methodologies have used in these projects to effectively map riverbed and seafloor levels. The proposed methods have a variety of applications such as calculating the capacity of dams, de-silting riverbeds, and reservoirs. The results accurately represent the depth and level of the seabed using 3D terrain models, contour lines, and depth maps. Figure 5: 3D Model The use of marine UAVs allows bathymetric survey operations to be carried out in automated mode without having to mobilize a traditional survey vessel, thus increasing the productivity of bathymetric surveys. Their portability allows their use in remote and hard-to-reach locations. The continuous development of technologies embedded in marine drones such as the Apache Series combined with their affordability have triggered their adoption by marine surveying professional and their widespread use.

2020-09-08

GNSS Advancements for AEC: Virtual Conference Experience (VCX) Event September 9-10, 2020

CHCNAV will participate in the "GNSS Advancements for the AEC" with presentations on September 9, 2020 (GMT-6). GNSS has undergone expansion and modernization, with a nearly doubling of satellites and 3rd signal implementation - much of this occurring in the past few years. The utility of GNSS as an essential foundation for digitization of engineering, construction, surveying, asset mapping, digital twins, autonomy, robotics, machine guidance, monitoring, and infrastructure IoT. The upcoming GNSS Advancements for AEC Virtual Conference Experience is bringing Geospatial sponsors and expert speakers together to hold a free virtual conference focused on the new era of GNSS. The GNSS Advancements for AEC - VCX Event will address these issues: - Advances in GNSS Constellations and Signals - GNSS Applications for Construction - GNSS Applications in Surveying and Asset Mapping - GNSS Integration with Drones and Vehicles Dr. Xin Shi, Chief Scientist and Ronald Ramsaran, Director of Product Development at CHCNAV will be giving a presentation on the topic of “Multiple constellations and L-Band PPP Applications”. Topic: Multiple constellations and L-Band PPP Applications Time: 3:00PM - 3:45PM MDT | 5:00PM - 5:45PM EDT 09/09/2020 (GMT-6) This presentation introduces the multiple constellations and a relatively new solution utilizing Precise Point Positioning (PPP) and L-Band satellite communication channels. The advantages include lower cost, more application scenarios and global coverage. Furthermore, the enhanced existing and emerging applications enabled by L-Band PPP is to be discussed. Register at: https://www.assetmapping.events/gnss

2020-09-04

CHCNAV | Make your work more efficient

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News & Events

The BIG5 Saudi 2021

OCEANOLOGY INTERNATIONAL 2020

Intergeo 2020

OI CONNECT 2020 December 1-4

Intergeo Digital 2020 October 13-15

CHC Navigation introduces the i73 GNSS and iBase GNSS receivers

Techniques in Bathymetric Survey Using the Apache Unmanned Survey Vessel

GNSS Advancements for AEC: Virtual Conference Experience (VCX) Event September 9-10, 2020

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Surveying & Engineering

Machine Control & Construction

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Infrastructure

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