GNSS

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

MIRASpaco, 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 but efficient solutions to transmit data and access the systems remotely.

MIRASpaco, 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. MIRASpaco 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 MIRASpaco:

  • Installation and rehabilitation 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.

VERTICAL POSITIONING

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 defenses 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 millimeter accuracy, but it is a costly and time-consuming process. Currently the best approach at national level is the creation of geoid undulation models that permit to have consistent heights all over the entire territory of a country directly estimated from GNSS observations.

These models should be connected to tide-gauges to establish a physical reference to the geoid undulation model. MIRASpaco has experience in the installation of tide-gauges together with the determination of the height difference between the water level and nearby geodetic benchmarks to define the vertical datum.

Services offered by MIRASpaco:

  • Gravity campaigns;
  • Geoid Computation;
  • Installation of tide gauges.

GEOPHYSICAL SURVEYS

MIRASpaco has created a network of collaborations with recognized experts in several areas of geophysical surveys that permits to offer highly specialized and state-of-art services, when their quality is the fundamental condition.

The focus is on complementary geophysical surveys for engineering projects, mine planning, environmental studies, risk assessments, archaeology, etc.

Services offered by MIRASpaco:

  • Hydrographic surveys;
  • Seismic surveys;
  • LiDAR surveys;
  • Magnetic surveys;
  • GPR surveys.

GEO-IT

Information Technology is an essential tool these days for managing geodata. Geoinformatics (Geo- IT) intends provides applications such as:
• Monitoring, management and processing of geo-referenced data from campaign and permanent GNSS networks;
• Automatic systems to monitor natural phenomena in (near-)real time.

MIRASpaco develops innovative solutions that intend to create state-of-the-art Geo-IT services and products by merging the acquired experience with the academic background.

Services and products offered by MIRASpaco:

  • MIRACoor: Automatic and dedicated estimation of coordinates with respect to global and national referentials;
  • MIRANet: Management of GNSS networks using web-services;
  • MIRARouter: Integrated software/hardware solutions to access remote devices;
  • Automatization of procedures to estimate geo-products (e.g., water vapor, position time- series).

TRAINING

Training and formation are constant and fundamental components to advance any organization. MIRASpaco, 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 long- term sustainability. MIRASpaco 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).

Services offered by MIRASpaco:

  • GNSS data acquisition and processing;
  • Operation of GNSS networks;
  • Gravimetric data acquisition and Geoid Computations;
  • UAV and LiDAR;
  • Other Geomatics and Geophysical areas;

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