GNSS

GNSS (Global Navigation Satellite Systems) stations, in particular using CORS (Continuously Operating Reference Stations) sensors are nowadays the best option to establish geodetic networks that permit to materialize the fundamental reference frame of a country and/or to stream RTK (Real-Time Kinematic) corrections for geo-referencing (e.g., surveying) applications.

TeroMovigo, connecting the scientific and technical worlds, has been developing and installing systems that are particularly optimized for regions where the existing logistics are still adverse. Recent examples are the coordination of the installation and/or rehabilitation of national geodetic reference frames based on GNSS CORS networks in several countries of Africa (e.g., Mozambique, Nigeria, Angola) and Asia (e.g., Bhutan and Brunei). The developed systems (dedicated solutions in terms of hardware and software) permit to install geodetic (and other) systems completely autonomous in terms of power and using low-cost solutions to transmit data and access the systems remotely.

TeroMovigo, using academic processing software packages, and state-of-art methodologies and models, can also provide accurate coordinates (sub-centimeter level) for reference stations in order to define and materialize new geocentric reference frames or densify existing ones. TeroMovigo also offers the continuous monitoring of the long-term stability of geodetic monuments in order to guarantee the quality of the reference networks.

Services offered by TeroMovigo:
– Installation of GNSS CORS networks;
– Dedicated and flexible solutions to transmit and manage GNSS data for post-processing and RTK;
– Definition and update of Geocentric reference frames based on Space Geodetic tools;
– Estimation of accurate coordinates with respect to global and/or national reference frames;

Presentations at international events of past projects by TeroMovigo members:
– Installation of the National GNSS Permanent Networks of Nigeria [NIGNET] and Angola [REPANGOL] and Definition of the Geocentric Reference Frames (presentation);
– Installation of the National GNSS Permanent Network of Mozambique [MOZNET] and Evaluation of the Geocentric Reference Frame (presentation);
– Common Border Datum Reference Frame between East Timor and Indonesia (article) (presentation in PT);
– Optimizing GNSS networks at remote locations (presentation);

Gravity

The determination of the height of a structure above mean sea level is necessary for many applications such as the construction of canals, dams and coastal defences and maps. Traditionally, heights are observed using geodetic levelling by measuring height differences between several points, benchmarks, along lines that cover the country. These levelling lines start at the tide gauge that defines the zero height.

Geodetic levelling can achieve millimetre accuracy but it is a costly and time consuming process. Furthermore, some of the benchmarks, which represent the physical implementation of the national height system, get destroyed over time or displaced due to vandalism or earthquakes. Therefore, in the last years more and more countries compute a national geoid model, representing a surface of zero height, that lists the vertical separation between this surface and a global reference ellipsoid (WGS84). Ellipsoidal heights are observed with GNSS and a geoid model can be used to convert the values into heights above mean sea level. An example is Canada where the geoid model CCG2013 is to used because the national surveying agency, NRCan, can no longer confirm the accuracy of the heights and stability of the benchmarks derived from the aging leveling network.

TeroMovigo is specialised in the production of regional and national geoid models and can help institutions and companies that suffer from sparse or aging levelling information. It is one of the few companies in the world with the know-how and experience of the whole process, from making the gravity observations in the field, to the actual computation of the geoid. The geoid model can be inserted into GNSS software of the client, or directly into the GNSS receiver, to obtain directly heights above sea level.

Finally, TeroMovigo has installed various tide gauges in harbours, together with the determination of the height difference between the water level and a nearby geodetic benchmark, to help to define the vertical datum.

Services offered by TeroMovigo:
– Gravity campaigns
– Geoid computation
– Installation of tide gauges

Presentations at international events of past projects by TeroMovigo members:
– Computation of the national geoid for Bhutan (presentation)
– Computation of a regional geoid around Tete, North Mozambique (presentation)
– Estimation of the orthometric height of Mt. Kilimanjaro (presentation)
– Installation of tide gauges in Ghana and Mozambique (presentation)

GEO-IT

Geographical and Earth Sciences are increasingly relying on digital data processing, creating the need to develop infrastructures based on Information Technology that can respond to these data processing necessities. GeoIT (Geoinformatics) intends, through the implementation and usage of geographic information systems (GIS), cloud-based solutions, remote sensing and cartography, to solve these challenges.

GeoIT provides applications such as:
– modeling and analysis of various geophysical components (sea level, seismology, volcanology, gravimetry, etc.);
– monitoring, management and processing of geo-referenced data from campaign and permanent networks;
– Automatic systems to monitor natural phenomena in (near-)real time;

TeroMovigo develops innovative solutions that intend to leverage the state-of-the-art in the areas of applicability of GeoIT. Thus, and mainly due to its academic origin, TeroMovigo develops and presents customized solutions that are predominantly scientifically proved.

Services offered by TeroMovigo:
– Automatic (TeroPoint) and dedicated estimation of coordinates with respect to global and national referentials.
– Management of GNSS networks (TeroNet) using web-services.
– Integrated software/hardware solutions to access remote devices.
– Automatization of procedures to estimate geo-products (e.g., water vapor, position time-series).

Presentations at international events of past projects by TeroMovigo members:
– Optimizing GNSS networks at remote locations (presentation)
– Coordinate estimation using adapted online tools (presentation)
– Automatic computation of water vapor products (presentation)

Geomatics

Geomatics refers to the processes related with the acquisition, analysis, interpretation, manipulation, edition and publication of spatial data. All these phases are covered by TeroMovigo, through the provision of services as well as the development of specific products. In particular, TeroMovigo provides services in the areas of topometric monitoring, Geographic Information Systems (GIS), cartographic production, precise GNSS-Kinematic surveys, and the use of and UAV for various purposes.

TeroMovigo focuses on the monitoring of structures at several scales using applied geodesy methods and technologies (e.g., GNSS, Laser Scanning and UAV) for data acquisition, processing and interpretation.

Primary support for territorial management interlocutors is based on cartographic information. Therefore, the quality of the cartographic production is essential for the correct planning of the territory. TeroMovigo members have experience on the several stages of the cartographic production, namely: flight plan, aero-photogrammetric support, area triangulation, restitution, editing and completion.

The UAV technology permits the monitoring and calculation of volumes in closed perimeters or of difficult access, visual and thermographic inspection of structures (e.g., towers and high voltage lines), cartographic production, altimetric models, support for precision agriculture, etc. TeroMovigo has also experience in precise kinematic surveyings using GNSS-PPP strategy (which does not require the existence of nearby reference stations).

In the GIS environment, all the acquired geospatial information can be visualized, analyzed and manipulated through computational procedures in order to facilitate the management and spatial/temporal representation of phenomena and objects.

Services provided by TeroMovigo:
– Topometric monitoring of structures.
– GIS Consulting.
– Production, validation and consulting of cartographic projects.
– Acquisition and processing of geo-data using UAV systems.

Presentations at international events of past projects by TeroMovigo members:
– Calibration of the Tandem-X satellite using GNSS kinematic surveys (presentation)

Training & Formation

The permanent training and formation of personal is a fundamental component on the management of the human resources for any organization, particularly in the area of geo-applications where new tools and methodologies are coming available constantly. TeroMovigo members, with their academic background, have vast experience connecting the theoretical knowledge with practical experience, which is necessary to efficiently implement best practices for geo-data acquisition, processing and interpretation.

One essential component of every new project is the capacity building that guarantees the sustainability at a long term.  TeroMovigo ensures knowledge transference at different levels according with the requirements and needs of the organizations. It ranges from field practical training focused on data acquisition and equipment operation to academic courses at undergraduate and graduate level (in collaboration with University of Beira Interior).

In addition, UBI with TeroMovigo support, has been hosting collaborators from many countries (e.g, Mozambique, Nigeria, Thailand, Singapore, Bhutan, Oman, Egypt, Morocco, Brazil) that carried out since short courses in specific areas (GNSS processing, Gravimetric acquisition) to M.Sc. courses in GeoIT and GIS areas.

Services offered by TeroMovigo:
– GNSS data acquisition and processing;
– UAV Operations;
– Operation of GNSS networks
– Gravimetric data acquisition and Geoid Computations
– Geomatics operations
– M.Sc. in GeoIT and GIS (in collaboration with UBI).

Examples of Courses coordinated by TeroMovigo members:
– GNSS Course for Mapping Agency Staff at RMCRD, Kenya (programme)
– Gravimetric Course for Mapping Agency Staff at OSGoF, Nigeria (programme)