Harxon Debuts Ruggedized Antenna HX-CVX600A for I-construction Machining Applications

The Harxon HX-CVX600A offers full support for reliable and consistent tracking of satellite signals including GPS, GLONASS, Galileo, Beidou, QZSS, IRNSS, SBAS as well as L-band correction services. It has a very stable phase centre that is based on multipoint feeding technology, exceptional low-elevation satellite tracking with symmetric radiation patterns, high gain with ultralow signal loss, as well as outstanding wide-angle circular polarization (WACP). The Harxon HX-CVX600A delivers remarkable positioning accuracy and provides end users with full control of the job site, enabling them to perform tasks more productively, meet tighter positioning specifications and avoid rework caused by inaccurate positioning.... (read more)
2020-05-11 02:41:40

The Evolution of FLEPOS 3.0

Next-generation Real-time Network for Flanders
A continuously operating reference station (CORS) provides GNSS data to support very accurate 3D positioning and additional geophysical applications. Flemish Positioning Services (FLEPOS) is the real-time global navigation satellite system (GNSS) CORS network for the Flanders region in northern Belgium. This article outlines the evolution of the next generation of the real-time network, FLEPOS 3.0. FLEPOS is part of Informatie Vlaanderen, a Flanders public administration organization. The first version of FLEPOS was established in 2002. Between 2002 and 2018, FLEPOS evolved through version 2.0 into the current FLEPOS 3.0 RTK real-time network (RTN) thanks to support from the Trimble Network... (read more)
2020-05-07 10:19:49

Ask the Specialist: GPS Signal Tracking

We received the following question from one of our readers: “While researching GNSS receiver specifications for various survey-grade products, I’ve observed that some of them list the following GPS signal-tracking capabilities: ‘L1P, L2E’. I have not been able to find a reference to these specific signal frequencies. Are they brand-new frequencies that may not be listed in the various signal specifications available online and/or could they be just ‘window dressing’ that really has no bearing on the signal tracking and performance of the product?”. We passed this question on to Huibert-Jan Lekkerkerk, contributing editor at 'GIM International' and an expert on GNSS... (read more)
2020-04-30 10:10:10

New GNSS Receiver Module Opens Door for Ultra-precise Positioning for High-volume Applications

Septentrio has announced that it is starting high-volume production of mosaic TM-X5, the next-generation multi-constellation and multi-band receiver module. Featuring the latest GNSS technology, mosaic TM-X5 brings centimetre-level positioning to technologies such as robotics, automation, smart wearables and telematics, among others. Its small form factor and low-power design makes high-performance positioning accessible to volume applications. “For smooth, uninterrupted operation in the field, mosaic TM-X5 is the logical choice for an industrial-grade GNSS positioning module,” said Francois Freulon, head of product management at Septentrio. “In an industrial setting, the cost of equipment downtime can quickly get out of hand. We designed mosaic TM to be robust in difficult environments, ensuring continuous operation as well as quick set-up times for our customers.” Compatible with all GNSS constellations Septentrio’s mosaic TM-X5 was conceived to be one of the first GNSS receiver modules... (read more)
2020-03-20 11:50:00

Rapid Survey Technology for Puerto Rico Earthquake Response

Geoxphere and WaldoAir Assist from the Air and on the Ground
A series of strong earthquakes recently hit populated areas in the south of the Caribbean island of Puerto Rico, causing major damage to properties and infrastructure. Geoxphere and WaldoAir were mobilized to assist in the disaster response effort. Tasked with capturing detailed photography from both the air and the ground, which was a first in this context, the team utilized their XCAM and XCAM360 rapid survey technology, with XMAP as the cloud-based data delivery tool. When a natural disaster such as a hurricane, earthquake or flood occurs, it is important to establish the extent of the damage, the risk to... (read more)
2020-02-19 10:43:24

Using PPP Corrections in Precise Real-time Applications

Minding the Gaps
Satellite-delivered GNSS correction services can be used in many real-time applications where real-time kinematic (RTK) and virtual reference stations (VRS) are not available. In areas without regular communication systems, satellite-broadcast PPP corrections can deliver centimetre-level positioning worldwide in real time. While geospatial professionals who use RTK and VRS enjoy reliable, cost-effective performance in a broad array of tasks, there are many instances where conditions conspire to make working in real time difficult or even impossible. For example, hilly terrain may block radio signals from an RTK base station, while inconsistent cellular coverage can disrupt or cut off communications with the... (read more)
2019-11-13 02:48:36

GNSS Receivers – Evolution or Revolution?

Past, Present and Future of Positioning
Satellite surveying… are there any industry professionals out there not using it on (almost) a daily basis? Over the last 30 years, GNSS has become the main positioning instrument for most applications, writes Huibert-Jan Lekkerkerk. Of course, there are still some exceptions where correct relative positioning is needed and dedicated optical systems such as a total station or level instrument are used, but even these are often set up over control points determined using GNSS techniques. This article investigates the developments in GNSS over the last decade and attempts to predict the future. Around a decade ago, a review of... (read more)
2019-01-30 08:43:20

ESA Leads Drive into 5G Positioning Future

A pair of testbed vehicles went out on the road in Germany to simulate the way we are all likely to be using 5G positioning services in the future. The field test focused on assessing the performance of highly precise ‘hybrid’ satellite/terrestrial positioning for autonomous vehicles, drones, smart cities and the Internet of Things. The two vehicles were driven for a week around Munich and the surrounding area in a variety of environments, from the open-sky terrain surrounding the German Aerospace Center DLR’s site in Oberpfaffenhofen to the deep urban canyons of the city’s dense Maxverstadt district. As they drove... (read more)
2019-10-03 09:30:38

Updating the Cadastre in Ecuador

Using Photogrammetry and Lidar Data
Photogrammetry and Lidar were used together in Ecuador to detect irrigation and drainage canals for a project aiming to improve irrigation methods and create the related land registry. The integration of photogrammetry and Lidar can generate synergies and economic savings. The two techniques were used together to detect irrigation and drainage canals for a project aiming to improve irrigation methods and create the related land registry in the province of El Oro in Ecuador. For over 60 years, the decentralised provincial government in El Oro, Ecuador, has been committed to the agro-productive development of the province. As part of this,... (read more)
2019-09-12 09:32:35

With or Without You? – Analysis of a Galileo Outage

“On Tuesday, 18 July 2019, technical weather is forecast as I get into my car on my way to an important GNSS verification test. Yesterday I received a short e-mail from the local reseller, informing me that Galileo is off air. Should the verification go ahead or not?” In this new column for ‘GIM International’, Huibert-Jan Lekkerkerk reflects on the two main lessons he learned during the recent Galileo outage. Part of the purpose of the verification test was to validate the manufacturer’s claims about the receiver by using the associated PPP correction service from a different supplier. Because most... (read more)
2019-07-31 12:09:26
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